Order No.

MAC0208024C8

Room Air Conditioner

CS-A7CKP CU-A7CKP5
CS-A9CKP CU-A9CKP5
CS-A12CKP CU-A12CKP5

CONTENTS
Page Page
1 Features 2 11 2-way, 3-way Valve 54
2 Functions 3 12 Servicing Information 67
3 Product Specifications 6 13 Troubleshooting Guide 71
4 Dimensions 12 14 Technical Data 73
5 Refrigeration Cycle Diagram 14 15 Exploded View 79
6 Block Diagram 15 16 Replacement Parts List 80
7 Wiring Diagram 16 17 Exploded View 81
8 Operation Details 17 18 Replacement Parts List 82
9 Operating Instructions 39 19 Electronic Circuit Diagram 83
10 Installation Instructions 44

© 2002 Matsushita Industrial Corp. Sdn. Bhd.

(11969-T). All rights reserved. Unauthorized copying
and distribution is a violation of law.
CS-A7CKP CU-A7CKP5 / CS-A9CKP CU-A9CKP5 / CS-A12CKP CU-A12CKP5

1 Features
• High Efficiency • Quality Improvement
− Gas leakage protection
• Compact Design − Prevent compressor reverse cycle
− 2-stage OLP to protect compressor
• Comfort Environment − Noise prevention during soft dry operation.
− Ionizer control for generate negative ion in discharge air − Compressor Protection Control (Cooling & Soft Dry)
− Air filter with function to reduce dust and smoke − Overload Protection Control (Heating)
− Wider range of horizontal discharge air − Outdoor Fan Control
− Compressor High Pressure Control
• Auto Restart − Blue Coated Condenser
− Random auto restart after power failure for safety restart − High resistance to corrosion.
operation
• Operation Improvement
• Removable and Washable Front Panel − Quiet mode to provide extra quiet operation
− Powerful mode to reach the desired room temperature
• Remote Control Self-illuminating Button quickly

• Catechin Air Purifying Filter • Long Installation Piping

− Trap dust, tobacco smoke and tiny particles − CS/CU-A7CK, CS/CU-A9CK, long piping up to 10 meter
− Prevent the growth of bacteria and viruses trapped − CS/CU-A12CK, long piping up to 15 meter

• Triple Deodorizing Filter • 24-hour Timer Setting

− Absorb odours produced by wall paper, construction
material and living environment

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 CS-A7CKP CU-A7CKP5 / CS-A9CKP CU-A9CKP5 / CS-A12CKP CU-A12CKP5

2 Functions

Remote Control

Self illuminating
button

OFF / ON I TEMP.
Operation OFF / ON Room Temperature Setting
Heating, Cooling, Soft Dry Operation.
• Temperature Setting (16°C to 30°C)
MODE
Operation Mode Selection
Automatic Operation
• AUTO Automatic Operation Mode • Operation with 2°C higher than
• HEAT Heating Operation Mode standard temperature.
• COOL Cooling Operation Mode • Operation with standard temperature.
• DRY Soft Dry Operation Mode • Operation with 2°C lower than
standard temperature.
FAN SPEED
Indoor Fan Speed Selection ON-TIMER
OFF-TIMER
Timer Operation Selection
• FAN Low Fan Speed
• FAN Medium Fan Speed • 24-hour, OFF / ON Real Timer Setting.
• FAN High Fan Speed
• AUTO Automatic Fan Speed
FAN TIME
Time / Timer Setting
• Hours and minutes setting.
AIR SWING
Vertical Airflow Direction Control SET
CANCEL
• AUTO Automatic Vertical Airflow Timer Operation Set / Cancel
Direction Control
• ON Timer and OFF Timer setting and
• MANUAL Vertical Airflow Direction
cancellation.
Manual Control (5 stages of
adjustment)
CLOCK
Clock Setting
POWERFUL
Powerful Mode Operation OFF/ON • Current time setting.

QUIET
Quiet Mode Operation OFF/ON Ionizer Operation OFF / ON

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CS-A7CKP CU-A7CKP5 / CS-A9CKP CU-A9CKP5 / CS-A12CKP CU-A12CKP5

Indoor Unit

AUTO
OFF / ON
Automatic Operation Button Ionizer Control
• Press for < 5s to operate Automatic • Ionizer control for generate negative ion in
operation mode. discharge air.
(Used when the remote control cannot be used.)
• Press continuously for 5s or < 10s to Indoor Fan Speed Control
operate Test Run/Pump down. “Beep”
sound will be heard at the 5th second. • High, Medium and Low.
(Used when test running or servicing.) • Automatic Fan Speed Mode
– Heating : Fan speed varies from Me →
• Press continuously for 10s and above to
SSLo in accordance with
omit or resume the remote control signal indoor heat exchanger.
receiving sound. “Beep, beep” sound will
– Cooling : Fan rotates at Hi, Me and SLo
be heard at the 10th second. speed. Deodorizing control is
available.
Operation Indication Lamps (LED) – Soft Dry : Fan rotates at Lo- speed.
Deodorizing control is
• POWER (Green) ......... Lights up in operation,
available.
blinks in Automatic
Operation Mode judging.
• QUIET (Orange) ......... Lights up in Quiet Mode Airflow Direction Control
Operation. • Automatic air swing and manual adjusted
• TIMER (Orange) ......... Lights up in Timer by remote control for vertical airflow.
Setting. • Manually adjusted by hand for horizontal
• POWERFUL (Orange) ... Lights up in Powerful airflow.
Mode Operation.
Starting Current Control
• (Green) ............ Lights up in Ionizer
Mode Operation. • Fan motor is delayed for 1.6 seconds when
compressor starts simultaneously.
Operation Mode
Time Delay Safety Control
• Heating, Cooling, Soft Dry and Automatic
Mode. • Restarting is inhibited for appro. 3 minutes.

Powerful Operation 7 Minutes Time Save Control

• Reaches the desired room temperature • Cooling Operation only.
quickly.
30 Minutes Time Save Control
Quiet Operation • Heating Operation only.
• To provide extra quiet operation.
Hot-Start Control
Random Auto Restart Control • At Heating Operation the indoor fan will
• Operation is restarted randomly after power operate at SLo speed when indoor heat
failure at previous setting mode. exchanger temperature reaches 30°C.

Anti-Freezing Control Anti Cold Draft Control

• Anti-Freezing control for indoor heat • The indoor fan operates at SSLo when the
indoor heat exchanger temperature is low.
exchanger. (Cooling and Soft Dry)
(During Heating mode thermal off)

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 CS-A7CKP CU-A7CKP5 / CS-A9CKP CU-A9CKP5 / CS-A12CKP CU-A12CKP5

Outdoor Unit

Compressor Reverse Rotation Deice Control

Protection Control
• To prevent frosting at outdoor heat
• To protect compressor from reverse exchanger. (Only for Heating Operation)
rotation when there is a instantaneous • Temperature of outdoor heat exchanger
power failure. is sensed by TRS (Thermal Reed Switch).
TRS OFF temperature 4°C.
TRS ON temperature -3°C.
Overload Protector
• 2-Stage OLP to protect the compressor. Overload Protection Control
Overload Protector will trip when • Outdoor fan stops when indoor heat
– Temperature of compressor increases exchanger temperature rises to 51°C
to 120°C. and above, and restarts when the indoor
– High temperature or high current flows heat exchanger temperature drops to
to compressor. 49°C and below.
(Refer circuit diagram for OLP • Compressor stop when indoor heat
characteristic) exchanger temperature reaches 65°C or
above. (Heating Operation Only)
60 Secs. Forced Operation Control
Compressor Protection Control
• Once the compressor is activated, it
does not stop within the first 60 secs. • If the outdoor fan motor is not running
However, it stops immediately with after compressor starts for 50 secs.,
remote control stop signal. compressor will stop. (Cooling and Soft
Dry Operation only).

Outdoor Fan Operation Control 4-Way Valve Control

• Temperature Fuse. • When the unit is switched to “OFF”
during Heating Operation, 4-way valve
stays at Heating position for 5 minutes.

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CS-A7CKP CU-A7CKP5 / CS-A9CKP CU-A9CKP5 / CS-A12CKP CU-A12CKP5

3 Product Specifications
Unit CS-A7CK CU-A7CK
Power Source Phase, Voltage, (1) Single, 220 - 230, 50 Hz
Cycle (3)
(2) Single, 220 - 240, 50 Hz
Cooling Capacity kW (kcal/h) (1) 2.00 - 2.05 (1,720 - 1,760)
(3)
kW (BTU/h) (2) 2.00 - 2.05 (6,820 - 6,990)
Heating Capacity kW (kcal/h) (1) 2.20 - 2.25 (1,890 - 1,940)
(3)
kW (BTU/h) (2) 2.20 - 2.20 (7,500 - 7,500)
Moisture Removal l/h (Pint/h) 1.3 (2.7)

Airflow Method OUTLET SIDE VIEW TOP VIEW

INTAKE

Air Volume Indoor Air (Lo) m3/min (cfm) Cooling; 6.4 (230) - 6.4 (230) —
Heating; 7.0 (250) - 7.0 (250)
Indoor Air (Me) m3/min (cfm) Cooling; 7.6 (270) - 7.6 (270) —
Heating; 7.7 (270) - 7.7 (270)
Indoor Air (Hi) m3/min (cfm) (1) Cooling; 8.5 (300) - 8.5 (300) Cooling; 34.0 (1,200) - 34.5 (1,220)
(3) Heating; 9.9 (350) - 9.9 (350)
(2) Cooling; 8.5 (300) - 8.5 (300) Cooling; 34.0 (1,200) - 35.0 (1,240)
Heating; 9.9 (350) - 9.9 (350)
Indoor Air (SHi) m3/min (cfm) Cooling; 9.9 (350) - 9.9 (350) —
Heating; 9.9 (350) - 9.9 (350)
Noise Level dB (A) Cooling; High 33-33, Low 26-26 Cooling; High 46 - 47
Heating; High 36-36, Low 28-28 Heating; High 48 - 49
Power level dB Cooling; High 46 - 46 Cooling; High 61 - 62
Heating; High 47 - 47 Heating; High 64 - 65
Electrical Data Input Power W (1) Cooling; 580 - 600
(3) Heating, 500 - 525
(2) Cooling; 580 - 630, Heating, 510 - 550
Running Current A (1)
(2) Cooling; 2.7 - 2.7, Heating; 2.4 - 2.4
(3)
EER W/W (kcal/hW) (1) Cooling; 3.45 - 3.42 (2.97 - 2.93)
(3)
W/W (BTU/hW) (2) Cooling; 3.44 - 3.25 (11.8 - 11.1)
COP W/W (kcal/hW) (1) Heating; 4.40 - 4.29 (3.78 - 3.70)
(3)
W/W (BTU/hW) (2) Heating; 4.31 - 4.00 (14.7 - 13.6)
Starting Current A 12.4
Piping Connection Port inch G ; Half Union 3/8” G ; 3-way valve 3/8”
(Flare piping) inch L ; Half Union 1/4” L ; 2-way valve 1/4”
Pipe Size inch G ; (gas side) 3/8” G ; (gas side) 3/8”
(Flare piping) inch L ; (liquid side) 1/4” L ; (liquid side) 1/4”
Drain Inner diameter mm 12 —
Hose Length mm 650 —
Power Cord Length m 1.9 —
Power of core wire 3 (1.0 mm2) —
Dimensions Height inch (mm) 10 - 13/16 (275) 21 - 1/4 (540)
Width inch (mm) 31 - 15/32 (799) 30 - 23/32 (780)
Depth inch (mm) 8 - 9/32 (210) 11 - 3/8 (289)
Net Weight lb (kg) 20 (9.0) 64 (29.0)
Compressor Type — Rotary (1 cylinder)
rolling piston type
Motor Type — Induction (2-poles)
Rated Output W — 550

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 CS-A7CKP CU-A7CKP5 / CS-A9CKP CU-A9CKP5 / CS-A12CKP CU-A12CKP5

Unit CS-A7CK CU-A7CK

Air Circulation Type Cross-flow Fan Propeller Fan
Material AS + Glass Fiber 20% PP Resin
Motor Type Induction (4-poles) Induction (6-poles)
Input W 44.8 - 53.5 56 - 64
Rate Output W 15 29
Fan Speed Low rpm Cooling; 780 - 780 —
Heating; 840 - 840
Medium rpm Cooling; 920 - 920 —
Heating; 920 - 920
High rpm (1) Cooling; 1,030 - 1,030 805 - 820
(3) Heating; 1,190 - 1,190
(2) Cooling; 1,030 - 1,030 805 - 830
Heating; 1,190 - 1,190
SuperHigh rpm Cooling; 1,190 - 1,190 —
Heating; 1,190 - 1,190
Heat Exchanger Description Evaporator Condenser
Tube material Copper Copper
Fin material Aluminium (Pre Coat) Aluminium (Blue Coat)
Fin Type Slit Fin Corrugate Fin
Row / Stage (Plate fin configuration, forced draft)
2 × 15 1 × 20
FPI 19 16
Size (W × H × L) mm 610 × 315 × 25.4 841 × 508 × 22
Refrigerant Control Device — Capillary Tube
Refrigeration Oil (cm3) — SUNISO 4GDID or ATMOS M60
(290)
Refrigerant (R-22) g (oz) — 810 (28.6)
Thermostat Electronic Control —
Protection Device — Overload Protector
Capillary Tube Length mm — Cooling; 600, Heating; 650
Flow Rate l/min — Cooling; 5.0, Heating; 11.4
Inner Diameter mm — Cooling; 1.1, Heating; 1.5
Air Filter Material P.P. —
Style Honeycomb
Capacity Control Capillary Tube
Compressor Capacitor µF, VAC — 20 µF, 370VAC
Fan Motor Capacitor µF, VAC 1.5 µF, 400VAC 2.0 µF, 450VAC

Note:
• Specifications are subject to change without notice for further improvement.
• (1) — CS-A7CKP/CU-A7CKP5 (Europe & CIS).
• (2) — CS-A7CKP-2/CU-A7CKP5-2 (Oceania).
• (3) — CS-A7CKP-6/CU-A7CKP5-6 (Turkey & Tunisia).

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CS-A7CKP CU-A7CKP5 / CS-A9CKP CU-A9CKP5 / CS-A12CKP CU-A12CKP5

Unit CS-A9CK CU-A9CK

Power Source Phase, Voltage, (1) Single, 220 - 230, 50 Hz
Cycle (3)
(2) Single, 220 - 240, 50 Hz
Cooling Capacity kW (kcal/h) (1) 2.65 - 2.70 (2,280 - 2,320)
(3)
kW (BTU/h) (2) 2.65 - 2.65 (9,040 - 9,040)
Heating Capacity kW (kcal/h) (1) 3.00 - 3.05 (2,580 - 2,620)
(3)
kW (BTU/h) (2) 3.00 - 3.05 (10,230 - 10,400)

Moisture Removal l/h (Pint/h) 1.6 (3.4)

Airflow Method OUTLET SIDE VIEW TOP VIEW

INTAKE

Air Volume Indoor Air (Lo) m3/min (cfm) Cooling; 6.8 (240) - 6.8 (240) —
Heating; 7.0 (250) - 7.0 (250)
Indoor Air (Me) m3/min (cfm) Cooling; 8.3 (290) - 8.3 (290) —
Heating; 8.0 (280) - 8.0 (280)
Indoor Air (Hi) m3/min (cfm) (1) Cooling; 9.9 (350) - 9.9 (350) Cooling; 34.0 (1,200) - 34.5 (1,220)
(3) Heating; 10.2 (360) - 10.2 (360)
(2) Cooling; 9.9 (350) - 9.9 (350) Cooling; 34.0 (1,200) - 35.0 (1,240)
Heating; 10.2 (360) - 10.2 (360)
Indoor Air (SHi) m3/min (cfm) Cooling; 10.2 (360) - 10.2 (360) —
Heating; 10.2 (360) - 10.2 (360)
Noise Level dB (A) Cooling; High 36-36, Low 26-26 Cooling; High 48 - 49
Heating; High 38-38, Low 28-28 Heating; High 48 - 49
Power level (dB) Cooling; High 49 - 49 Cooling; High 62 - 63
Heating; High 49 - 49 Heating; High 64 - 65
Electrical Data Input Power W (1) Cooling; 800 - 830
(3) Heating; 700 - 740
(2) Cooling; 830 - 870, Heating; 730 - 780
Running Current A (1) Cooling; 3.8 - 3.7
(3) Heating; 3.3 - 3.3
(2) Cooling; 3.8 - 3.7, Heating; 3.4 - 3.3
EER W/W (kcal/hW) (1) Cooling; 3.31 - 3.25 (2.85 - 2.80)
(3)
W/W (BTU/hW) (2) Cooling; 3.19 - 3.05 (10.9 - 10.4)
COP W/W (kcal/hW) (1) Heating; 4.29 - 4.12 (3.69 - 3.54)
(3)
W/W (BTU/hW) (2) Heating; 4.11 - 3.91 (14.0 - 13.3)
Starting Current A 17.3
Piping Connection Port inch G ; Half Union 3/8” G ; 3-way valve 3/8”
(Flare piping) inch L ; Half Union 1/4” L ; 2-way valve 1/4”
Pipe Size inch G ; (gas side) 3/8” G ; (gas side) 3/8”
(Flare piping) inch L ; (liquid side) 1/4” L ; (liquid side) 1/4”
Drain Inner diameter mm 12 —
Hose Length mm 650 —
Power Cord Length m 1.9 —
Number of core-wire 3 (1.0 mm2) —
Dimensions Height inch (mm) 10 - 13/16 (275) 21 - 1/4 (540)
Width inch (mm) 31 - 15/32 (799) 30 - 23/32 (780)
Depth inch (mm) 8 - 9/32 (210) 11 - 3/8 (289)
Net Weight lb (kg) 20 (9.0) 73 (33.0)
Compressor Type — Rotary (1 cylinder)
rolling piston type
Motor Type — Induction (2-poles)
Rated Output W — 720

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 CS-A7CKP CU-A7CKP5 / CS-A9CKP CU-A9CKP5 / CS-A12CKP CU-A12CKP5

Unit CS-A9CK CU-A9CK

Air Circulation Type Cross-flow Fan Propeller Fan
Material AS + Glass Fiber 20% PP Resin
Motor Type Induction (4-poles) Induction (6-poles)
Input W 44.8 - 53.5 56 - 64
Rate Output W 15 29
Fan Speed Low rpm Cooling; 780 - 780 —
Heating; 840 - 840
Medium rpm Cooling; 960 - 960 —
Heating; 960 - 960
High rpm (1) Cooling; 1,140 - 1,140 805 - 820
(3) Heating; 1,230 - 1,230
(2) Cooling; 1,140 - 1,140 805 - 830
Heating; 1,230 - 1,230
SuperHigh rpm Cooling; 1,230 - 1,230 —
Heating; 1,230 - 1,230
Heat Exchanger Description Evaporator Condenser
Tube material Copper Copper
Fin material Aluminium (Pre Coat) Aluminium (Blue Coat)
Fin Type Slit Fin Corrugate Fin
Row / Stage (Plate fin configuration, forced draft)
2 × 15 1 × 20
FPI 19 16
Size (W × H × L) mm 610 × 315 × 25.4 841 × 508 × 22
Refrigerant Control Device — Capillary Tube
Refrigeration Oil (cm3) — SUNISO 4GSI (350)
Refrigerant (R-22) g (oz) — 860 (30.4)
Thermostat Electronic Control —
Protection Device — Overload Protector
Capillary Tube Length mm — Cooling; 982, Heating; 325
Flow Rate l/min — Cooling; 5.4, Heating; 13.4
Inner Diameter mm — Cooling; 1.2, Heating; 1.4
Air Filter Material P.P. —
Style Honeycomb
Capacity Control Capillary Tube
Compressor Capacitor µF, VAC — 30 µF, 400VAC
Fan Motor Capacitor µF, VAC 1.5 µF, 400VAC 2.0 µF, 450VAC

Note:
• Specifications are subject to change without notice for further improvement.
• (1) — CS-A9CKP/CU-A9CKP5 (Europe & CIS).
• (2) — CS-A9CKP-2/CU-A9CKP5-2 (Oceania).
• (3) — CS-A9CKP-6/CU-A9CKP5-6 (Turkey & Tunisia).

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CS-A7CKP CU-A7CKP5 / CS-A9CKP CU-A9CKP5 / CS-A12CKP CU-A12CKP5

Unit CS-A12CK CU-A12CK

Power Source Phase, Voltage, (1) Single, 220 - 230, 50 Hz
Cycle (3)
(2) Single, 220 - 240, 50 Hz
Cooling Capacity kW (kcal/h) (1) 3.52 - 3.60 (3,030 - 3,100)
(3)
kW (BTU/h) (2) 3.52 - 3.57 (12,000 - 12,170)
Heating Capacity kW (kcal/h) (1) 3.90 - 4.07 (3,350 - 3,500)
(3)
kW (BTU/h) (2) 3.90 - 4.00 (13,300 - 13,640)
Moisture Removal l/h (Pint/h) 2.1 (4.4)

Airflow Method OUTLET SIDE VIEW TOP VIEW

INTAKE

Air Volume Indoor Air (Lo) m3/min (cfm) Cooling; 7.3 (260) - 7.3 (260) —
Heating; 7.8 (270) - 7.8 (270)
Indoor Air (Me) m3/min (cfm) Cooling; 9.1 (320) - 9.1 (320) —
Heating; 9.1 (320) - 9.1 (320)
Indoor Air (Hi) m3/min (cfm) (1) Cooling; 10.2 (360) - 10.2 (360) Cooling; 32.5 (1,150) - 33.0 (1,160)
(3) Heating; 10.6 (370) - 10.6 (370)
(2) Cooling; 10.2 (360) - 10.2 (360) Cooling; 32.5 (1,150) - 33.5 (1,180)
Heating; 10.6 (370) - 10.6 (370)
Indoor Air (SHi) m3/min (cfm) Cooling; 10.6 (370) - 10.6 (370) —
Heating; 10.6 (370) - 10.6 (370)
Noise Level dB (A) Cooling; High 39-39, Low 29-29 Cooling; High 48 - 49
Heating; High 40-40, Low 29-29 Heating; High 48 - 49
Power level (dB) Cooling; High 52 - 52 Cooling; High 62 - 63
Heating; High 52 - 52 Heating; High 64 - 65
Electrical Data Input Power kW (1) Cooling; 1.08 - 1.12
(3) Heating; 1.07 - 1.10
(2) Cooling; 1.12 - 1.17, Heating; 1.07 - 1.11
Running Current A (1) Cooling; 5.1 - 5.0
(3) Heating; 5.0 - 4.8
(2) Cooling; 5.1 - 4.9, Heating; 5.0 - 4.8
EER W/W (kcal/hW) (1) Cooling; 3.26 - 3.21 (2.80 - 2.77)
(3)
W/W (BTU/hW) (2) Cooling; 3.14 - 3.05 (10.7 - 10.4)
COP W/W (kcal//hW) (1) Heating; 3.64 - 3.70 (3.13 - 3.18)
(3)
W/W (BTU/hW) (2) Heating; 3.64 - 3.60 (12.4 - 12.3)
Starting Current A 16.9
Piping Connection Port inch G ; Half Union 1/2” G ; 3-way valve 1/2”
(Flare piping) inch L ; Half Union 1/4” L ; 2-way valve 1/4”
Pipe Size inch G ; (gas side) 1/2” G ; (gas side) 1/2”
(Flare piping) inch L ; (liquid side) 1/4” L ; (liquid side) 1/4”
Drain Inner diameter mm 12 —
Hose Length mm 650 —
Power Cord Length m 1.9 —
Number of core-wire 3 (1.0 mm2) —
Dimensions Height inch (mm) 10 - 13/16 (275) 21 - 1/4 (540)
Width inch (mm) 31 - 15/32 (799) 30 - 23/32 (780)
Depth inch (mm) 8 - 9/32 (210) 11 - 3/8 (289)
Net Weight lb (kg) 20 (9.0) 82 (37.0)
Compressor Type — Rotary (1 cylinder)
rolling piston type
Motor Type — Induction (2-poles)
Rated Output W — 930
Air Circulation Type Cross-flow Fan Propeller Fan
Material AS + Glass Fiber 20% PP Resin
Motor Type Induction (4-poles) Induction (6-poles)
Input W 44.8 - 53.5 65 - 73
Rate Output W 15 33

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 CS-A7CKP CU-A7CKP5 / CS-A9CKP CU-A9CKP5 / CS-A12CKP CU-A12CKP5

Unit CS-A12CK CU-A12CK

Fan Low rpm Cooling; 900 -900 —
Speed Heating; 960 - 960
Medium rpm Cooling; 1,120 - 1,120 —
Heating; 1,120 - 1,120
High rpm (1) Cooling; 1,260 - 1,260 835 - 845
(3) Heating; 1,300 - 1,300
(2) Cooling; 1,260 - 1,260 835 - 860
Heating; 1,300 - 1,300
SuperHigh rpm Cooling; 1,300 - 1,300 —
Heating; 1,300 - 1,300
Heat Exchanger Description Evaporator Condenser
Tube material Copper Copper
Fin material Aluminium (Pre Coat) Aluminium (Blue Coat)
Fin Type Slit Fin Corrugate Fin
Row / Stage (Plate fin configuration, forced draft)
2 × 15 2 × 24
FPI 21 16
Size (W × H × L) mm 610 × 315 × 25.4 720 × 504 × 18.9
Refrigerant Control Device — Capillary Tube
Refrigeration Oil (cm3) — SUNISO 4GSI (410)
Refrigerant (R-22) g (oz) — 1,090 (38.5)
Thermostat Electronic Control —
Protection Device — Overload Protector
Capillary Tube Length mm — Cooling; 630, Heating; 455
Flow Rate l/min — Cooling; 6.5, Heating; 13.6
Inner Diameter mm — Cooling; 1.2, Heating; 1.5
Air Filter Material P.P. —
Style Honeycomb
Capacity Control Capillary Tube
Compressor Capacitor µF, VAC — 30 µF, 370VAC
Fan Motor Capacitor µF, VAC 1.5 µF, 400VAC 2.0 µF, 450VAC

Note:
• Specifications are subject to change without notice for further improvement.
• (1) — CS-A12CKP/CU-A12CKP5 (Europe & CIS).
• (2) — CS-A12CKP-2/CU-A12CKP5-2 (Oceania).
• (3) — CS-A12CKP-6/CU-A12CKP5-6 (Turkey & Tunisia).

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CS-A7CKP CU-A7CKP5 / CS-A9CKP CU-A9CKP5 / CS-A12CKP CU-A12CKP5

4 Dimensions

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 CS-A7CKP CU-A7CKP5 / CS-A9CKP CU-A9CKP5 / CS-A12CKP CU-A12CKP5

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CS-A7CKP CU-A7CKP5 / CS-A9CKP CU-A9CKP5 / CS-A12CKP CU-A12CKP5

5 Refrigeration Cycle Diagram

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 CS-A7CKP CU-A7CKP5 / CS-A9CKP CU-A9CKP5 / CS-A12CKP CU-A12CKP5

6 Block Diagram

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CS-A7CKP CU-A7CKP5 / CS-A9CKP CU-A9CKP5 / CS-A12CKP CU-A12CKP5

7 Wiring Diagram

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 CS-A7CKP CU-A7CKP5 / CS-A9CKP CU-A9CKP5 / CS-A12CKP CU-A12CKP5

8 Operation Details
8.1. Cooling Mode Operation
Cooling in operation according to Remote Control setting.

Time Delay Safety Control (3 minutes)

• When the compressor is stopped by Remote Control, it restarts after 3 minutes when it is turned ON by Remote Control.
• When the setting temperature is reached during cooling operation, the compressor stops and it will not start for 3 minutes.

7 minutes Time Save Control

• The compressor will start automatically if it has stopped for 7 minutes even if the room temperature is between the compressor
ON temperature and OFF temperature.

Starting Current Control

• When the compressor outdoor fan motor and indoor fan motor are simultaneously started, the indoor fan motor will operate 1.6
second later.

Anti-Freezing Control

• If the temperature of the indoor heat exchanger falls

continuously below 2°C for 4 minutes or more, the
compressor turns off to protect the indoor heat exchanger
from freezing. The fan speed setting remains the same.
• Compressor will restart again when the indoor heat
exchanger temperature rises to 10°C (Recovery).
3 minutes waiting of Time Delay Safety Control is valid for
Cooling Operation.

Compressor Reverse Rotation Protection Control

• If the compressor is operating continuously for 5 minutes or longer and the temperature difference between intake air and
indoor heat exchanger is 2.5°C or less for 2 minutes, compressor will stop and restart automatically.
(Time Delay Safety Control is valid)

▲ T = Intake air temperature - Indoor heat exchanger temperature

This is to protect reverse rotation of the compressor when there is a instantaneous power failure.

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Compressor Protection Control

• After the compressor starts for 50 seconds but the outdoor fan motor is still OFF, the compressor will stop and restart
automatically. (Time Delay Safety Control is valid).

• If the above phenomenon is repeated for 3 times, the compressor will stop totally.
• The above phenomenon is reset when there is a change to heating mode or stopped by Remote Control Switch.

Automatic Fan Speed Mode

When Automatic Fan Speed is selected at Remote Control during cooling operation.
• Fan speed rotates in the range of Hi to Me.
• Deodorizing Control.

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Cooling Operation Time Diagram

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Quiet Operation Control

(For Cooling Mode or cooling region of Soft Dry Mode)

• Purpose of this operation is to provide quite cooling operation compare to normal operation.
• When the Quiet Mode is set at the remote control, Quiet Mode LED illuminates, the sound level will be automatically decreased
2 dB (Lo), decreased 3 dB (Hi, Me), against the present sound level operation.
• Quiet setting of fan speed rpm refer to Indoor Fan Speed Control.
• Dew formation become severe at Quiet Lo cool, therefore Quiet Lo cool is operated only 1h 30 min (1h QLo, 30 min QLo + 50).
After that, it goes back to Lo cool (However Quiet LED remains on).
• Manual Airflow Direction:-
− RPM control during Lo cool

− RPM control during Hi & Me cool

• Auto Airflow Direction:-

• Quiet Mode Operation will stop if:-

− Quiet mode button is pressed again.
− Stopped by ON/OFF switch.
− Timer OFF activates.
− Powerful mode button is pressed.
− When change mode to Air Circulation mode.

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8.2. Soft Dry Mode Operation

• The unit starts cooling operation until the room temperature reaches the setting temperature set on the Remote Control, and
then Soft Dry operation will start.
• During Soft Dry operation, the Indoor Fan will operate at Lo- speed.
• The operation will be switched on and off for up to 10 minutes “ON” and 6 minutes “OFF”. Once Soft Dry operation is turned
off, it stops for 6 minutes.

Time Delay Safety Control

• Once the compressor stops, it will not start for 3 minutes during Cooling operation.

Starting Current Control

• Same as Starting Current Control for Cooling Mode operation.

Anti-Freezing Control

• Same as Anti-Freezing Control for Cooling Mode operation. (For Soft Dry region, 6 minutes waiting is valid during compressor
stops.)
Compressor Reverse Rotation Protection Control

• Same as Compressor Reverse Rotation Protection Control for Cooling Mode Operation. (For Soft Dry region, 6 minutes waiting
is valid during compressor stops.)

Compressor Protection Control

• Same as Compressor Protection Control for Cooling Mode Operation.

Automatic Fan Speed Mode

When Automatic Fan Speed is selected at Remote Control during Soft Dry operation.
• Fan speed rotates at Lo- speed.
• Deodorizing Control.

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Soft Dry Operation Time Diagram

Quiet Operation Control

(For Dry region at Soft Dry Mode)

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8.3. Heating Mode Operation

Heating in operation according to Remote Control setting.

Time Delay Safety Control

• When the compressor is stopped by Remote Control, it restarts after 3 minutes when the Remote Control is turned ON.
• When the setting temperature is reached during heating operation, the compressor stops and it will not start for 4 minutes.

30 minutes Time Save Control

• The compressor will start automatically if it has stopped for 30 minutes even if the room temperature is between the compressor
ON temperature and OFF temperature.

Overload Protection Control

(a) Outdoor Fan Control

• If the temperature of the indoor heat exchanger rises to 51°C, Outdoor Fan stops.
The Outdoor Fan restarts when the indoor heat exchanger temperature falls to 49°C.

(b) Compressor high pressure protection

• If the indoor heat exchanger becomes 65°C or more, the compressor will stop and restart automatically.
(Time Delay Safety Control - 4 minutes waiting).

Compressor Reverse Rotation Protection Control

• If the compressor is operating continuously for 5 minutes or longer and temperature difference between intake air and indoor
heat exchanger is 5°C or less for 2 minutes, compressor will stop and restart automatically.
(Time Delay Safety Control is valid).

▲ T = Indoor heat exchanger temperature - intake air temperature.

This is to protect reverse rotation of the compressor when there is a instantaneous power failure.

4-way Valve Control

• 4-way valve always ON during Heating operation. (Except Deicing operation)

• When the unit is switched to “OFF” during Heating operation, 4-way valve stay at Heating position for 5 minutes.

Outdoor Fan Motor Control

• When compressor stops (reaches room temperature), outdoor fan will operate for 30 seconds.
(30 seconds Forced Operation).

Indoor Fan Motor Control

• When compressor stops (reaches room temperature), indoor fan will stop for 1 minutes, operate for 3 minutes, if still not yet
reaches the room temperature, indoor fan Lo- for 40 sec. after that operate at SLo speed.

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Hot Start Control

When Heating operation starts, Indoor Fan will not start until the indoor heat exchanger reaches 30°C as diagram shown.

Hot Start is completed when indoor heat exchanger rises to 39°C or over 4 minutes.

Anti Cold Draft Control

• This operation is to prevent the Cold Draft during Heating mode operation.
• The operation will start when compressor OFF (Thermo OFF) during Heating operation.
• For the first 30 sec. from compressor OFF (Thermo OFF), Indoor fan speed will operate accordingly to the Indoor heat
exchanger temperature as shown below:

• After 30 sec. from compressor OFF (thermo OFF), Indoor fan will run at SSLo speed only.
• Anti Cold Draft Control will stop when:
− Intake temperature < set temperature. (Time Delay Safety Control 4 minutes waiting is valid)
− After 30 minutes time saved control.
(refer to next page).

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Automatic Fan Speed Mode

When Automatic Fan Speed is selected at Remote Control during heating operation.
• Fan speed rotates in the range of Me → SLo according to the heat exchanger temperature.

• If use Manual Fan Speed, at above diagram will operate with setting Fan Speed.

Heating Operating Time Diagram

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Deicing Control

Deice starts to prevent frosting at outdoor heat exchanger.

• Normal Deicing
Deice operations detection commences after 30 minutes of Heating operation starts or 60 minutes after previous deice
operation. If the TRS (Thermal Reed Switch) senses the outdoor piping temperature drops to -3°C (TRS CLOSE) or less for
50 sec. continuously during compressor is in operation, deice will start.
(There is no detection during Outdoor Fan stops.)

• Overload Deicing
During heating operation, if the outdoor Fan OFF duration (due to overload control) is accumulated up to 60 minutes and
after compressor starts for 1 minutes, deicing starts.

• Deicing ends when

1. 12 minutes after deicing operation starts;
2. TRS senses the outdoor piping temperature rises to 4°C (TRS OPEN).
3. Deicing will not end immediately as time delay (Td) is valid as shown below.

• Once deicing operation starts, it will not end for 60 seconds.

• After deicing operation, compressor stops for 30 seconds and 4-way valve stays at cooling position for 10 seconds.

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Normal Deicing Time Diagram

Overload Deicing Time Diagram

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Quiet Operation Control

(For Heating Mode)

• Purpose of this operation is to provide quite heating operation compare to normal operation.
• When the Quiet Mode is set at the remote control, Quiet Mode LED illuminates, the sound level will be automatically
decreased 2 dB (Lo), decreased 3 dB (Hi, Me), against the present sound level operation.
• Quiet setting of fan speed rpm refer to Indoor Fan Speed Control.
• Manual Airflow Direction:-
− Rpm control during Lo, Me & Hi Cool

• Auto Airflow Direction:-

− Rpm control depends on the piping air temperature sensor of Indoor heat exchanger

• Quiet Mode Operation will stop if:-

− Quiet mode button is pressed again.
− Stopped by ON/OFF switch.
− Timer OFF activates.
− Powerful mode button is pressed.

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8.4. Automatic Mode Operation

1. When the Automatic Mode Operation is selected, the indoor fan operates at SLo fan speed for 25 seconds to sense intake air
temperature and determine the 1st operation mode.

2. Operation mode will be determine again after 1 hour of operation, if the room temperature reaches to set temperature and
compressor off time is over 7 minutes 30 seconds continuously.
The present operation mode will be continued, if the room temperature does not reach to set temperature (Compressor keeps running)
eventhough after 1 hour from automatic operation mode started.

Present Judgement Next Mode

Mode Cooling Soft Dry Heating
O O
Cooling 23°C Cooling (Judgement: Not Applicable (Judgement:
Heating 23°C & Above) Below 23°C)

O O
Soft Dry 20°C Soft Dry Not Applicable (Judgement: (Judgement:
Heating 20°C & Above) Below 20°C)

O O
Heating Cooling (Judgement: Not Applicable (Judgement:
25°C Heating Above 25°C) 25°C & below)

Automatic Set Temperature

Refer 3. as below.

3. Automatic Set Temperature

For each operation, set temperature will automatically set as shown below.
However it can be selected 2°C higher or 2°C lower from standard set temperature by pressing the “Room Temperature Setting
button”.
Operation Hi (Standard) Lo
(+2°C) (±0°C) (-2°C)
Cooling 27°C 25°C 23°C
Soft Dry 24°C 22°C 20°C
Heating 23°C 21°C 19°C

• The mode judging temperature and standard setting temperature can be increased by 2°C, by open the circuit of JX1 at
indoor electronic controller.

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8.5. Random Auto Restart Control

• If there is a power failure during air conditioner operation, operation will be automatically restarted after 3 to 4 minutes when the
power is resumed. It will start with previous operation mode and airflow direction.
• Restart time is decided randomly using 4 parameter:
Intake air temperature, setting temperature, fan speed and Air Swing Blade position.
• Random Auto Restart Control is not available when Timer is set.
• This control can be omitted by open the circuit of JX2. (Refer Circuit Diagram)

8.6. Delay ON Timer Control

• When the Delayed ON Timer is set by using the remote control, the unit will start operate slightly before the set time, so that
the room will reach nearly to the set temperature by the desired time.
• For Cooling and Soft Dry mode, the operation will start 15 minutes before the set time.
• For Heating mode, the operation will start 30 minutes before the set time.
• For Automatic mode, the indoor fan will operate at SLo speed for 25 seconds, 30 minutes before the set time to detect the
intake air temperature to determine the operation mode. The operation indication lamp will blink at this time.

8.7. Remote Control Signal Receiving Sound

• Long beep sound will be heard when:-
− Stopping the Air Conditioner using ON/OFF switch.
− Stopping the Quiet Mode.
− Stopping the Powerful Mode.
− Stopping the Ion Mode.
• Short beep sound will be heard for others.
• To switch off the beep sound:-
Press the “Automatic Operation Button” continuously for 10 seconds or more (“beep” “beep” will be heard at the 10th second).
Repeat the above if you want to switch ON the beep sound.
However, if the “Automatic Operation Button” has been pressed the Automatic operation will be activated.
If you do not require this operation, you may change it by using the remote control.

8.8. Indoor Fan Speed Control

Auto Fan Speed Control

When set to Auto Fan Speed, the fan speed is shifted automatically between Stop to SHi depend on each operation as shown
below.

Manual Fan Speed Control

Basic fan speed adjustment (3 settings, from Lo to Hi) can be carried out by using the Fan Speed selection button at the remote
control.

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8.9. Airflow Direction Control

1. Vertical Airflow Direction

Cooling, Ion and Soft Dry Mode

• The louver swings up and down as shown above. • The louver can be selected between 14° - 36° (as
• The louver does not swing when the Indoor Fan stops shown above) when pressing Manual Airflow Direction
during operation at the upper limit. Selection Button.

Heating Mode

• When the intake air temp. reaches 38°C, the louver is • The louver can be selected between 0° - 61° (as shown
changed from upper to lower limit. When the intake air above) when pressing Manual Airflow Direction
temp falls to 35°C, the louver is changed from lower to Selection Button.
upper limit.

2. Horizontal Airflow Direction

• The left and right airflow direction louvers can be adjusted manually.

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8.10. Powerful Mode Operation

Purpose of this operation is to be obtain the setting temperature quickly.

1. Cooling and Soft Dry Mode

• When the Powerful Mode is set, the set temperature will be automatically decreased 3°C against the present setting
temperature (Lower temperature: 16°C). This operation automatically will be running under SHi Fan speed (cooling), Lo-
Fan Speed (Soft Dry).

• Vertical Airflow Direction:-

In “Manual” setting, the vane will automatically shift down 10° lower than previous setting.
In “Auto” setting, the vane will automatically swing up and down. However the upper and lower limit will be shifted 10°
downward.

2. Heating Mode
• When the Powerful Mode is set, the set temperature will be automatically increased 3°C against the present setting
temperature (Higher temperature: 30°C).

• The Fan Speed will shift as shown below:

• Vertical Airflow Direction:-

In “Manual” setting, the vane will automatically shift down 5° lower than previous setting.
In “Auto” setting, the vane will automatically shift between upper and lower limit depending on the intake air temperature as
Heating Mode, Airflow Direction Auto-Control. However the upper and lower limit will be shifted 5° downward.

3. Powerful mode will operate for 15 minutes only.

4. Powerful Mode will stop if:

• Powerful mode button is pressed again.
• Stopped by ON / OFF switch.
• Timer-off activates.
• Quiet mode button is pressed.
• Operating mode is changed.

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8.11. Ionizer Operation

Purpose
To provide fresh air effect to user by producing minus ion in discharge air.

Control Condition

a. Ionizer Only Operation.

1. When air-conditioner unit is at “OFF” condition (standby) and ION operation button at remocon is pressed.
Fan & ionizer on, ION LED illuminates, but power LED maintain off. (1 → 2)
However, fan speed can be adjusted later by customer during this operation.

Air flow direction (Horizontal Vane) control:

Follow vane direction control at cooling mode.
Horizontal vane can be changed by customer during ion only operation.
2. Ion only operation can be off by pressed ION button again. (2 → 1)
3. It can be changed to previous operated mode (Auto, Heat, Cool, Dry) + ion operation by OFF/ON switch. (2 → 4)
4. During ion only operation, if power failure occur, after power resume, ionizer & air-conditioner resumes immediately.
5. After error = 24 times, (about 11h 30 min.), ion & fan off with Ion LED blinks continuously.
(Detail refer to Ionizer Error detection control.)

b. Operation Mode + Ionizer Operation.

1. Ionising Operation Start Condition
When air-conditioner unit is in “ON” condition (Heat, Cool, Dry, Auto mode) and ION operation button at remote controller
is pressed. Ionizer on & ION LED illuminates. (3 → 4)
Power LED also illuminates.
2. Ionising Operation Stop Condition
When one of the following condition is satisfied, ION operation stops.
a. Stopped by ON/OFF switch.
b. Timer OFF activates.
c. ION operation button is pressed again.
d. ION feedback signal shows error.

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3. Ionizer operation status is not memorised after off. After OFF, when operation is “ON” again, air-conditioner operates without
ionizer operation.
However, during Cool mode etc. + ionizer operation, if there is a power failure & then power resume, A/con shall on at that
mode + ionizer operation.

c. Timer during ionizer operation

Refer to case study in next page for detail.

8.11.1. Ionizer Error Detection Control

A. Purpose
To inform user that error occurs at ionizer system so that repairing job can be carried out.

B. Two type of error detection control:

(a) When Ionizer is ON (example case: Ionizer shorted, ionizer over current protection)
• During ionizer ON operation, when feed back voltage = Lo (micon input) is detected, Ion is OFF. If feedback = Lo for 11
hrs 30 min, ION LED blinks continuously.
• To cancel ion LED blinking, press ion button at remocon (or forcible operation sw at a/con unit). If ion button is pressed
again, ion LED blinks again.
• The error can be reset by:
i) Operation ON/OFF button press to operation OFF.
ii) Forcible switch press to operation OFF.
iii) Operation OFF due to Timer OFF reach.
iv) Timer set ON & operation from ON to OFF (only applicable to 12 hrs timer models).

(b) When Ionizer is OFF (example case: ionizer connecting wire loose)
• During air conditioner is at standby or ON operation and ionizer at OFF condition, if ionizer feed back voltage = Hi (micon
input) is detected, Ionizer breakdown detection control is activated and ion LED immediately blinks.
• To cancel Ion LED blinking, press ion button at remocon (or forcible operation sw at a/con unit). If ion button is pressed
again, ion LED blinks again.
• During ionizer at breakdown condition, if ionizer feedback voltage = Lo (become OK), ion LED will stop blinking.

8.11.2. Ionizer Operation case study

Case 1a: Ionizer only operation (12h delay timer ON) Case 1b: Ionizer only operation (12h delay timer OFF)

Case 2a: Ionizer only operation (24h real time timer ON) Case 2b: Ionizer only operation (24h real time timer OFF)

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Case 3a: Operation Mode + Ionizer (12h delay timer ON) Case 3b: Operation Mode + Ionizer (12h delay timer OFF)

Case 4a: Operation Mode + Ionizer (24h real time timer ON) Case 4b: Operation Mode + Ionizer (24h real time timer OFF)

Case 5a: Ionizer only operation (24h real time timer ON) Case 5b: Ionizer only operation (24h real time timer OFF)

Case 6a: Ionizer only operation (12 delay timer ON) Case 6b: Ionizer only operation (24h real time timer ON)

Case 7a: Operation Mode + Ionizer (12 delay timer ON) Case 7b: Operation Mode + Ionizer (24h real time timer ON)

Case 8: Ionizer only operation (Auto Fan) & shift to Cool Mode

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Note:
1. 24 times checking: Actual Ion ON for 10s & OFF for 1s 30 min continuously for 24 times.
2. 24 times count will be cleared when following conditions happen.
a) 24 times count over, b) Ionizer cancel if press Ion button or power reset, c) Ion f/b sgnl OK.
3. Error protection will be cleared when following conditions happen.
a) Power reset, b) Remocon operation ON/OFF button press, c) Forcible operation press, d) Opt OFF due to Timer OFF
4. Ion auto restart: Ion will auto restart if Actual Ion was ON with no error protection control before power shutdown. Otherwise
Ion will not auto restart.
5. Ion LED blinking can ON/OFF during error protection by following conditions:
a) Press remocon ion button
b) Press emergency opt SW to OFF blinking.

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9 Operating Instructions

SAFETY PRECAUTIONS
■ Installation Precautions ■ Operation Precautions
Before operating, please read the following
“Safety Precautions” carefully.
! Warning ! Warning
● To prevent personal injury, injury to others and This sign warns of death or serious injury.
property damage, the following instructions must be ● Do not install, remove and reinstall the unit by
followed. yourself. ● Do not share outlet.
Improper installation will cause leakage, electric ● Do not insert plug to operate the unit. Do not
● Incorrect operation due to failure to follow instructions
shock or fire. Please engage an authorized dealer pull out plug to stop the unit.
will cause harm or damage, the seriousness of which
or specialist for the installation work. ● Do not operate with wet hands.
is classified as follow:
● Do not damage or modify the power cord.
● Do not insert finger or other objects into the
! Warning indoor or outdoor units.

This sign warns of death or serious injury.

! Caution ● Do not expose directly to cold air for a long
period.

● Plug in properly.
● This room air conditioner must be ● Use specified power cord.
! Caution earthed.
Improper grounding could cause
This sign warns of damage to property. electric shock.
● Ensure that the drainage piping is OFF

connected properly. ● If abnormal condition (burnt smell, etc.)

● The instructions to be followed are classified by the Otherwise, water will leak out. occurs, switch off and unplug the power
following symbols: supply.

● Do not install the unit in a

potentially explosive atmosphere.
Gas leak near the unit could cause
! Caution
fire. This sign warns of injury.
● Do not pull the cord to disconnect the plug.
This symbol (with a white background) denotes an ● Do not wash the unit with water.
action that is PROHIBITED. ● Do not use for other purposes such as
preservation.
● Do not use any combustible equipment at
airflow direction.
● Do not sit or place anything on the outdoor
unit.
OFF

● Switch off the power supply before cleaning.

● Ventilate the room regularly.
These symbols (with a black background) denote ● Pay attention as to whether the installation
actions that are COMPULSORY. rack is damaged after long period of usage.

OFF

● Switch off the power supply if the unit is not

used for a long period.

NAME OF EACH PART

■ Indoor Unit ● Indoor Unit ■ Accessories
(when the front panel is opened) ● Remote Control
1 2
1 3 OF
ON
AU
TTO
HE
A
AT
AU
CO
OL
F TTO DRY
FA
AN
N

3
AU
TE FA
AN
N
TTO
MP

MO
DE
AIR OF
EC F/O
Ste SW ON N
p ING OM
1 Y
ON SL
EE
OFF 2 P
FAN
SP
EE
CHE 3 D
CK TIM SE
T

2
RES ER
ET CA
CLO NC
CK EL
BAT +
TER
Y

7 6 5 4
● Remote Control Indication Sticker
1 Front Panel
1 Front Panel
2 Air Intake Vent
2 Air Filters
3 Power Supply Cord
3 Air Purifying Filter
4 Air Outlet Vent

5 Vertical Airflow Direction Louver ■ Outdoor Unit

6 Horizontal Airflow Direction Louver
(manually adjusted) 1
2
● Remote Control Holder
7 Indicator Panel

1 2 3 456 3
6
4
5
● Two RO3 (AAA) dry-cell batteries or equivalent
1 Auto Operation Button
(when the front panel is opened)

2 Powerful Mode Indicator – ORANGE 1 Air Intake Vents

3 Ionizer Mode Indicator – GREEN 2 Ground Terminal ● Air Purifying Filter

(Inside cover)
4 Power Indicator – GREEN
3 Piping
5 Quiet Mode Indicator – ORANGE
4 Connecting Cable
6 Timer Mode Indicator – ORANGE
5 Drain Hose

6 Air Outlet Vents

(Catechin Air (Triple Deodorizing
Purifying Filter) Filter)

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● How to Insert the Batteries

NAME OF EACH PART
AU
TO
HE
AT

■ Remote Control 1 Signal Transmitter

CO

2 OF
AU
TO
OL
AU
TO DRY
FA
N
PO A
WER FA UTO

2 Operation Display
N
FUL

1 MO
DE
AU AIR EC
TO ON
3 Ionizer Mode Operation Button
SW
IN OM
1 MA G
Y
ON NU SL
AL E
OF 2
F FAN
SP
EE
4 Room Temperature Setting Button
CH 3 D
EC
K
TIM SE
ER T
2
RE
SE
T
CL
CA
NC
AUTO HEA
AUT HEAT COOL DR
DRY FAN
AN (illuminating button) OCK
EL

AUTO 1.5
1.5 V
5 Operation Mode Selection Button V

ON
OFF AUTO
FAN 6 Quiet Mode Operation Button 1
TEMP
7 Auto Airflow Direction Button
3 OFF/ON
! 8 ON-Timer Button
4 1 Slide down the remote control cover completely
5 MODE QUIET POWERFUL
# 9 OFF-Timer Button
6 2 Insert the batteries
$
AIR SWING
AUTO MANUAL FAN SPEED 0 Reset Point – Be sure the direction is correct
7 $ (Press with fine-tipped object to clear the memory)
8
1 2 3
% – 12.00 at display - flashing
ON SET • Set the current time (CLOCK) immediately to
9 ^ ! OFF/ON Button prevent battery exhaustion.
OFF CANCEL
(illuminating button)
TIMER &
0 * ● About the batteries
CHECK RESET CLOCK @ Powerful Mode Operation Button • Can be used for approximately one year.
( # Fan Speed Selection Button ● Observe the following when replacing the
batteries
$ Manual Airflow Direction Selection Button • Replace with new batteries of the same type.
● Remote Control Signal. • Do not use rechargeable batteries (Ni-Cd).
% Timer Set Button • Remove the batteries if the unit is not going to be
• Make sure it is not obstructed.
• Maximum distance : 10 m. used for a long period.
^ Timer Cancellation Button
• Signal received sound.
One short beep or one long beep. & Time-Setting Button

● Notes for Remote Control. * Clock Button

• Do not throw or drop.
• Do not get it wet. ( Remote Control Cover
• Certain type of fluorescent lamps may affect
signal reception. Consult your dealer.

PREPARATION BEFORE OPERATION HOW TO OPERATE ■ Setting Temperature

• Press 3 to increase or decrease the temperature.
• The temperature can be set between 16°C ~ 30°C.
■ Indoor Unit • Recommended temperature:

AU
TO
HE
AT
Cooling Model Heat Pump Model
ON CO

2 1 2 OF
F
AU L D
O
TO RY
FA

A
N
COOL –> 26°C ~ 28°C COOL –> 26°C ~ 28°C
TE FA UTO

6 MP N
DRY –> 1°C ~ 2°C DRY –> 1°C ~ 2°C
3 MO
DE lower than the lower than the
3 5 AU AIR OF
room temperature
1
QU
TO SW
IN IE
T
F/O
N room temperature
5 4 OF
ON
1

2
MA G
NU
A L
PO
WER
FUL
6
HEAT –> 20°C ~ 24°C
F FAN
SP
4 • During AUTO Operation, press 3 to select:-
EE
CH 3 D
EC
K
TIM SE
RE
SE
ER T
T
CL
CA
NC

1
OCK
EL
Connect the power supply cord to an independent
• Operation with 2°C higher than the standard
power supply temperature.
■ To start the operation
2 Open the front panel • Press 1. • Operation with the standard temperature.
• POWER indicator (green) on the indoor unit will light
up. • Operation with 2°C lower than the standard
3 Remove the air filters • To stop, press once more. temperature.
AUTO HEAT COOL DRY FAN
AUTO
■ Setting Mode ● Standard Temperature
4 Fit the air purifying filters in place
• Press 2 to select:-
Cooling Model
5 Insert the air filters AUTO
FAN Standard
Indoor
Cooling Model temperature Operation temperature
6 Close the front panel
Cooling 25°C
AUTO – Automatic Operation
COOL – Cooling Operation 23°C Soft Dry 22°C
■ Remote Control DRY – Soft Dry Operation
– To set the current time FAN – Air Circulation Operation
• Once the Automatic Operation is selected, the indoor
AIR SWING temperature sensor operates automatically to select
AUTO MANUAL FAN SPEED the desired operation mode with Cooling or Soft Dry.
Heat Pump Model • After the operation mode has been selected, the
1 2 3
ON SET mode does not change.
AUTO – Automatic Operation
OFF CANCEL HEAT – Heating Operation Heat Pump Model
TIMER 2 COOL – Cooling Operation Indoor Standard
CHECK RESET CLOCK
1 DRY – Soft Dry Operation temperature Operation temperature
Cooling 25°C
23°C Soft Dry 22°C
1 Press 1. 20°C Heating 21°C
2 Then press 2 to increase or decrease the time.
3 Press 1 again. • At the beginning of the automatic operation, Heating,
Cooling or Soft Dry is automatically selected according
Set time at display will light up.
to the indoor temperature.
• The operation mode changes every hour, when
necessary.

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■ Setting the Fan Speed ■ Setting the Horizontal Airflow Direction ● Operation Details
• Press 4 to select:-
FAN – Low Fan Speed COOL – Cooling Operation
FAN – Medium Fan Speed • To set the room temperature at your preference
FAN – High Fan Speed
AUTO cooling comfort.
FAN – Automatic Fan Speed
The speed of the indoor fan is adjusted AUTO – Automatic Operation
automatically according to the operation. • Sense indoor temperature to select the optimum
The indoor fan stops occasionally during mode.
cooling operation. • Adjust it manually
• Temperature is not displayed on the remote control
during AUTO operation.
■ Setting the Vertical Airflow Direction ● Use this air conditioner under the following
• Press 5 or 6 to select:- conditions: DRY – Soft Dry Operation
• A very gentle Cooling Operation, prior to
Cooling Model dehumidification. It does not lower the room
Cooling Model
temperature.
COOL / DRY Operation FAN Operation
Unit in °C • During Soft Dry operation, the indoor fan operates at
AUTO AUTO
Low fan speed.
DBT: Dry Bulb Temp Indoor Outdoor
WBT: Wet Bulb Temp DBT WBT DBT WBT HEAT – Heating Operation
Maximum Temperature (for Heat Pump Model only)
36° 61° 32 23 43 26
• Heat is obtained from outdoor air to warm up the
Minimum Temperature 16 11 16 11 room. When the outdoor ambient air temperature
Swing up/down Move up/down falls, the heating capacity of the unit might be
Automatically Automatically reduced.
• Defrosting Operation
MANUAL MANUAL Heat Pump Model
Depend on the outdoor temperature, the operation
Five stages of adjustment Five stages of adjustment
can be made between Unit in °C occasionally stops to melt the frost on the outdoor
can be made between
0° ~ 61°. unit.
14° ~ 36°. Indoor Outdoor
DBT: Dry Bulb Temp
WBT: Wet Bulb Temp DBT WBT DBT WBT FAN – Air Circulation Operation
Heat Pump Model (for Cooling Model only)
Maximum Temperature-Cooling 32 23 43 26 • When the room temperature reaches the set
(Maximum Temperature-Heating) (30) (-) (24) (18)
COOL / DRY Operation HEAT Operation temperature, operation commences at Low airflow
AUTO AUTO Minimum Temperature-Cooling 16 11 16 11 volume. It stops when the room temperature drops to
(Minimum Temperature-Heating) (16) (-) (-5) (-6) 2°C below the set temperature.
– When the discharge air (It is useful when using a heater).
temperature is low such
as at the start of heating
36° operation, the air blows ● Notes
at horizontal level. As • If the unit is not going to be used for an extended
the temperature rises,
period of time, turn off the main power supply. If it is
the hot air blows at a
Swing up/down downward direction.
left at the ON position, approximately 2.5 W of
Automatically – To stop this operation, electricity will be used even if the indoor unit has been
press MANUAL. turned off with the remote control.
• If operation is stopped, then restart immediately, the
MANUAL MANUAL
Five stages of adjustment
unit will resume operation only after 3 minutes.
Five stages of adjustment
can be made between can be made between
14° ~ 36°. 0° ~ 61°.

AUTOHEAT COOL DRY FAN

AUTO

AUTO
FAN

8 OFF/ON CONVENIENCE OPERATION

■ Powerful Mode Operation ■ Quiet Mode Operation
To obtain the set temperature quickly. To provide quiet operation.
MODE QUIET POWERFUL • Press 6. • Press 7.
7 6
AIR SWING * Powerful mode indicator (orange) on the indoor * Quiet mode indicator on the indoor unit will light
AUTO MANUAL FAN SPEED unit will light up. up.
1 2 3 * Powerful mode will operate for 15 minutes only. • To cancel this operation, press once more.
1 ON SET
3 • To cancel this operation, press once more.
5 4 ● Operation Details
OFF CANCEL ● Powerful Mode Operation Details • Air flow sound will reduce during operation.
TIMER 2 • The changes of the temperature and airflow volume
CHECK RESET CLOCK
are automatic. ■ Ionizer Mode Operation
• The remote control display remains unchanged. Produce negative ion for fresh air.
SETTING THE TIMER • If operation mode button is pressed, powerful • Press 8.
Ensure that the current time is correct before setting the operation will be cancelled. * Ion mode indicator on the indoor unit will light up.
timer. The timer cannot be set if the time display is • During FAN – Air circulation operation, the powerful • To cancel this operation, press once more.
flashing. operation are not available.
(cooling model only) ● Operation Details
■ ON-TIMER Operation
• Air conditioner ON:
To start the air conditioner operation automatically.
Provide negative ion during operation.
• Press 1 to set the operation.
• Press 2 to increase or decrease the time. • Air conditioner OFF:
• Then press 3. Powerful Mode
Provide negative ion with FAN operation.
Temperature Airflow
• To cancel this operation, press 4. Operation volume
• If blinking, press 8 twice.
If still blinking, please call service.
■ OFF-TIMER Operation 3°C lower
To stop the air conditioner operation automatically. COOL / DRY than set temp. Super High
• Press 5 to set the operation.
• Press 2 to increase or decrease the time. HEAT 3°C higher
• Then press 3. (for Heat Pump than set temp. Automatic
• To cancel this operation, press 4. model only)

● Timer Mode Operation Details

• When the ON-Timer is set, operation will start
before the actual set time. This is to enable the
room temperature reaches the set temperature at
the set time.

Cooling Model Heat Pump Model

COOL,DRY, –>15 minutes COOL,DRY, –>15 minutes

AUTO in advance in advance
HEAT, AUTO –>30 minutes
in advance

• Once the ON/OFF Timer is set, operation will start/

stop at the set time everyday.
• The current time is not displayed when the timers
are set.
• When both timers are used together, the TIMER
mode indicator on the indoor unit remains lit even
when the operation is stopped by the OFF-TIMER.

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CARE AND MAINTENANCE

■ Cleaning the Indoor Unit and Remote ■ Air Purifying Filters ■ Pre-season Inspection
Control ● Is the discharged air cold/warm?
• Wipe gently with a soft, dry cloth. Operation is normal if 15 minutes after the start of
• Do not use water hotter than 40˚C or polishing fluid
to clean the unit. 1 operation, the difference between the air intake and
Raise the outlet vents temperature is:-
■ Cleaning the Air Filter front panel
(Recommendation:- If the unit is operated in a dusty Cooling Model
environment, clean the filters every two weeks,
continuous use of this dirty filters will reduce cooling Triple Deodorizing COOL –> 8°C or above
or heating efficiency) Filter
1 Remove dirt using a vacuum cleaner. Heat Pump Model
Catechin Air Purifying
2 Wash back of the air filter with water. Filter COOL –> 8°C or above
3 If badly soiled, wash it with soap or a mild household HEAT –> 14°C or above
2 Remove the air filters ● Are the air intake or outlet vents of the indoor or
detergent.
outdoor units obstructed?
4 Let it dry and reinstall it.
Be sure the “FRONT” mark is facing you. ● Are the remote control batteries weak?
● Triple Deodorizing Filter If the remote control display appears weak, replace
* Damaged air filter.
• Absorb odours produced by wall paper, construction the batteries.
Consult the nearest authorized dealer.
Part No.: CWD001047. material and living environment.
• Do not use benzene, thinner, scouring powder or • Reusable. ■ When the Air Conditioner is Not Used
clothes soaked in caustic chemical to clean the unit. • Vacuum, place under direct sunlight for 6 hours and for an Extended Period of Time
fit it back in place.
■ Cleaning the Front Panel (Recommended: every 6 months)
1 To dry the internal parts of the indoor unit, operate
(Must be removed before washing) the unit for 2 - 3 hours using:-
1 Raise the front panel higher than the horizontal and ● Catechin Air Purifying Filter
Cooling Model
pull to remove it. • The filter is coated with catechin to prevent growth
2 Gently wash with water and a sponge. of bacteria and viruses. FAN operation
• Do not press the front panel too hard when washing. • Reusable.
• When use kitchen cleaning fluid (neutral detergent), • Vacuum and fit it back in place
(Recommended: every 6 months) Heat Pump Model
rinse thoroughly.
• Do not dry the front panel under direct sunlight. COOL operation with 30°C
3 To fix the front panel, raise the front panel • Recommended to change these filters every 3 years. set temperature
Do not reuse damaged filters.
horizontally, match the protruding portion on the
Consult the nearest authorized dealer to purchase a
2 Turn off the power supply and unplug.
indoor unit to the fulcrum and push into place. Note: If the unit is not switched off by the remote
new filter. control, it will start operating when you plug in
Catechin Air Purifying Filter No.: CZ-SF70P (because the unit is equipped with Auto Restart
Triple Deodorizing Filter No.: CZ-SFD72P Control).
3 Remove the remote control batteries.
• If you operate the air conditioner with dirty filters:-
– Air is not purified ■ Recommended Inspection
Fulcrum – Cooling or heating capacity decreases • After used over several seasons, the unit will
– Foul odour is emitted become dirty and thus decreases the unit’s
performance. Depending on the operation
conditions, a dirty unit may produce odour and dust
may pollute dehumidification system. Therefore, a
Protruding portion on indoor unit seasonal inspection is recommended in addition to
regular cleaning. (Consult an authorized dealer).

HELPFUL INFORMATION ENERGY SAVING AND OPERATION

HINTS
■ Auto Operation Button ■ Auto Restart Control
• If power is resumed after a power failure, the
■ Setting the Temperature
operation will restart automatically after 3 - 4
• Approximately 10% of electricity can be saved.
minutes. • Set the temperature higher or lower than the
• Operation will be restarted automatically under the desired temperature.
• Raise the front panel and press
previous operation mode and airflow direction when
power is resumed as the operation is not stopped
by the remote control. Cooling Model
● Automatic Operation
• If the remote control fails to function or has been
■ Timer Setting Cooling Operation : 1°C higher
misplaced, press the Auto Operation button to start
• When power failure occurs, the timer setting will be
the Automatic operation.
cancelled. Once power is resumed, reset the timer.
• The Automatic operation will be activated Heat Pump Model
immediately once the Auto operation button is
■ Thunder and Lightning Cooling Operation : 1°C higher
pressed. However, temperature cannot be adjusted
• This air conditioner is equipped with a built-in surge Heating Operation : 2°C lower
in this operation.
protective device. However, in order to further
• The power indicator on the indoor unit will blink until
protect your air conditioner from being damaged by
the operation mode is selected automatically.
abnormally strong lightning activity, you may switch ■ Air Filters and Air Purifying Filters
• To cancel this operation, press once more.
off the main power supply and unplug from power • Clean the air filters every 2 weeks and the Air
socket. Purifying Filters every 6 months.
● Remote Control Signal Receiving Sound
• Dirty filters may reduce cooling or heating
• To switch off the beep (Signal Receiving Sound),
efficiency.
press the Auto Operation button for 10 seconds
continuously or longer.
■ Keep All Doors and Windows Closed
“Beep”, “beep” sound will be heard at the tenth
• Otherwise, cooling or heating performance will be
seconds.
reduced and electricity cost is wasted.
Note: “Beep” sound will be heard at the fifth
seconds;
■ Outdoor Unit
However please press continuously until you
• Do not block the air outlet vents. Otherwise, it will
heard “beep”, “beep” sound.
lower the cooling or heating performance.
• Repeat the above steps if you want to switch on the
Signal Receiving Sound.
■ Timer Mode
• To prevent wastage of electricity, use Timer when
● (This is for Servicing purposes only)
going out.
Note: If you press this button continuously for 5 to 10
seconds, Test Run operation will be performed.
■ Avoid Direct Sunlight
A “beep” sound will be heard at the fifth seconds
• Keep curtains or drapes closed to avoid direct
indicating the Test Run starts to operate.
sunlight during cooling or heating operation.

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TROUBLESHOOTING
■ Normal Operation ■ Call the Dealer Immediately

Is it okay? This is the answer If the following conditions occur, turn off and unplug the
main power supply, and then call the dealer immediately.
• Air conditioner has been restarted, but does not • This is to protect the air conditioner. Wait until the air
operate for 3 minutes. conditioner begins to operate. • Abnormal noise is heard during operation.

• A sound like water flowing can be heard. • This is the sound of refrigerant flowing inside the air • Water or foreign material gets into the remote
conditioner.
control by mistake.
• It seems that fog is coming out from the air • Condensation occurs when the airflow from the air
conditioner. conditioner cools the room. • Water leak from the indoor unit.

• The room has a peculiar odour. • This may be a damp smell emitted by the wall, • Switches or buttons do not operate properly.
carpet, furniture or clothing in the room.

• During Automatic Vertical Airflow setting, • This is to remove smell emitted by the surroundings. • The circuit breaker switches off frequently.
indoor fan stops occasionally.
• Power supply cord and plug become unusually
• The outdoor unit emits water or steam. • In COOL/DRY operation, moisture in the air warm.
condenses into water on the cool surface of outdoor
unit piping that causes dripping.

• (For Heat Pump Model only) • This is to melt the frost which has accumulated on
Operation stops for about 12 minutes during the outdoor unit (defrosting operating). This will take
heating (The power indicator blinks). no longer than about 12 minutes. Water drips from
the outdoor unit. Wait until this operation ends. (the
power indicator will light up).
(Frost will accumulates on the outdoor unit when the
outdoor temperature is low and humidity is high.)

• (For Heat Pump Model only) • This is to prevent undesired cooling effect during
During heating operation, indoor fan may heating operation.
run at on and off conditions.

■ Abnormal Operation
Is it okay? Please check
• The air conditioner does not operate. • Has the circuit breaker been tripped?
• Has the power plug been removed from the wall outlet?
• Is the timer being used correctly?
• Air conditioner produces loud noise during • Is the installation work slanted?
operation. • Is the front grille closed properly?
• The air conditioner does not cool or warm • Has the temperature been set incorrectly?
effectively. • Are the filters dirty?
• Are the intake or outlet vents of the outdoor unit
obstructed?
• Are all windows and doors closed?
• Remote control / display doesn’t work • Batteries empty?
• Batteries correctly inserted (+) and (–)?

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CS-A7CKP CU-A7CKP5 / CS-A9CKP CU-A9CKP5 / CS-A12CKP CU-A12CKP5

10 Installation Instructions
Required tools for Installation Works
1. Philips screw driver 5. Spanner 9. Gas leak detector 13. Multimeter
2. Level gauge 6. Pipe cutter 10. Measuring tape 14. Torque wrench
18 N.m (1.8 kgf.m)
42 N.m (4.2 kgf.m)
55 N.m (5.5 kgf.m)
3. Electric drill, hole core drill 7. Reamer 11. Thermometer 15. Vacuum pump
(ø70 mm)
4. Hexagonal wrench (4 mm) 8. Knife 12. Megameter 16. Gauge manifold

10.1. Safety Precautions

• Read the following “SAFETY PRECAUTIONS” carefully before installation.
• Electrical work must be installed by a licensed electrician. Be sure to use the correct rating of the power plug and main circuit
for the model to be installed.
• The caution items stated here must be followed because these important contents are related to safety. The meaning of each
indication used is as below. Incorrect installation due to ignoring of the instruction will cause harm or damage, and the
seriousness is classified by the following indications.

This indication shows the possibility of causing death or serious injury.

This indication shows the possibility of causing injury or damage to properties only.

The items to be followed are classified by the symbols:

Symbol with background white denotes item that is PROHIBITED from doing.

• Carry out test running to confirm that no abnormality occurs after the installation. Then, explain to user the operation, care and
maintenance as stated in instructions. Please remind the customer to keep the operating instructions for future reference.

1. Engage dealer or specialist for installation. If installation done by the user is defective, it will cause water leakage, electrical shock or fire.
2. Install according to this installation instruction strictly. If installation is defective, it will cause water leakage, electrical shock or fire.
3. Use the attached accessories parts and specified parts for installation. Otherwise, it will cause the set to fall, water leakage, fire or
electrical shock.
4. Install at a strong and firm location which is able to withstand the set’s weight. If the strength is not enough or installation is not properly
done, the set will drop and cause injury.
5. For electrical work, follow the local national wiring standard, regulation and this installation instruction. An independent circuit and single
outlet must be used. If electrical circuit capacity is not enough or defect found in electrical work, it will cause electrical shock or fire.
6. Use the specified cable (1.5 mm 2) and connect tightly for indoor/outdoor connection. Connect tightly and clamp the cable so that no
external force will be acted on the terminal. If connection or fixing is not perfect, it will cause heat-up or fire at the connection.
7. Wire routing must be properly arranged so that control board cover is fixed properly. If control board cover is not fixed perfectly, it will
cause heat-up at connection point of terminal, fire or electrical shock.
8. When carrying out piping connection, take care not to let air substances other than the specified refrigerant go into refrigeration cycle.
Otherwise, it will cause lower capacity, abnormal high pressure in the refrigeration cycle, explosion and injury.
9. When connecting the piping, do not allow air or any substances other than the specified refrigerant (R410A) to enter the
refrigeration cycle. Otherwise, this may lower the capacity, cause abnormally high pressure in the refrigeration cycle, and
possibly result in explosion and injury. (Only for models: CS/CU-V7CK, V9CK, V12CK, W7CK, W9CK, W12CK)
10. • When connecting the piping, do not use any existing (R22) pipes and flare nuts. Using such same may cause
abnormally high pressure in the refrigeration cycle (piping), and possibly result in explosion and injury. Use only
R410A materials.
• Thickness of copper pipes used with R410A must be more than 0.8 mm. Never use copper pipes thinner than 0.8
mm.
• It is desirable that the amount of residual oil is less than 40 mg/10 m (Only for models: CS/CU-V7CK, V9CK,
V12CK, W7CK, W9CK, W12CK).
11. Do not modify the length of the power supply cord or use of the extension cord, and do not share the single outlet with
other electrical appliances. Otherwise, it will cause fire or electrical shock.

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1. The equipment must be earthed. It may cause electrical shock if grounding is not perfect.

2. Do not install the unit at place where leakage of flammable gas may occur. In case gas leaks and accumulates at
surrounding of the unit, it may cause fire.

3. Carry out drainage piping as mentioned in installation instructions. If drainage is not perfect, water may enter the room and damage the
furniture.

1. Selection of the installation location.

Select a installation location which is rigid and strong enough to support or hold the unit, and select a location for easy maintenance.
2. Power supply connection to the room air conditioner.
Connect the power supply cord of the room air conditioner to the mains using one of the following method.
Power supply point shall be the place where there is ease for access for the power disconnection in case of emergency.
In some countries, permanent connection of this room air conditioner to the power supply is prohibited.
1. Power supply connection to the receptacle using a power plug.
Use an approved 15A/16A power plug with earth pin for the connection to the socket.
2. Power supply connection to a circuit breaker for the permanent connection. Use an approved 16A circuit breaker for the permanent
connection. It must be a double pole switch with a minimum 3 mm contact gap.
3. Do not release refrigerant.
Do not release refrigerant during piping work for installation, reinstallation and during repairing a refrigeration parts. Take care of the
liquid refrigerant, it may cause frostbite.
4. Installation work.
It may need two people to carry out the installation work.
5. Do not install this appliance in a laundry room or other location where water may drip from the ceiling, etc.

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Attached accessories

Indoor/Outdoor Unit Installation Diagram

Applicable piping kit

CZ-3F5, 7AEN (C7CK, C9CK, A7CK, A9CK, V7CK, V9CK,
W7CK, W9CK)
CZ-4F5, 7, 10AN (C12CK, A12CK, V12CK, W12CK)

SELECT THE BEST LOCATION

INDOOR UNIT
• There should not be any heat source or steam near the
unit.
• There should not be any obstacles blocking the air
circulation.
• A place where air circulation in the room is good.
• A place where drainage can be easily done.
• A place where noise prevention is taken into
consideration.
• Do not install the unit near the door way.
• Ensure the spaces indicated by arrows from the wall,
ceiling, fence or other obstacles.
• Recommended installation height for indoor unit shall be
at least 2.3 m.

OUTDOOR UNIT
• If an awning is built over the unit to prevent direct
sunlight or rain, be careful that heat radiation from the
condenser is not obstructed.
• There should not be any animal or plant which could be
affected by hot air discharged.
• Keep the spaces indicated by arrows from wall, ceiling,
fence or other obstacles.
• Do not place any obstacles which may cause a short
circuit of the discharged air. • This illustration is for explanation purposes only.
• If piping length is over the common length, additional The indoor unit will actually face a different way.
refrigerant should be added as shown in the table.

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10.2. INDOOR UNIT

10.2.1. SELECT THE BEST LOCATION 10.2.3. TO DRILL A HOLE IN THE WALL
(Refer to “Select the best location” AND INSTALL A SLEEVE OF
section) PIPING

1. Insert the piping sleeve to the hole.

10.2.2. HOW TO FIX INSTALLATION
2. Fix the bushing to the sleeve.
PLATE
3. Cut the sleeve until it extrudes about 15 mm from the wall.

The mounting wall is strong and solid enough to prevent it from Caution
the vibration. When the wall is hollow, please be sure to use the
sleeve for tube ass’y to prevent dangers caused by
mice biting the connecting cable.

4. Finish by sealing the sleeve with putty or caulking

compound at the final stage.

The centre of installation plate should be at more than 450 mm

at right and left of the wall.
The distance from installation plate edge to ceiling should more
than 67 mm.
From installation plate left edge to unit’s left side is 47 mm.
From installation plate right edge to unit’s right is 73 mm.
: For left side piping, piping connection for liquid should be
about 14 mm from this line.
: For left side piping, piping connection for gas should be
about 56 mm from this line. 10.2.4. INDOOR UNIT INSTALLATION
: For left side piping, piping connecting cable should be
about 785 mm from this line. 1. For the right rear piping

1. Mount the installation plate on the wall with 5 screws or

more.
(If mounting the unit on the concrete wall consider using
anchor bolts.)
• Always mount the installation plate horizontally by
aligning the marking-off line with the thread and using a
level gauge.

2. Drill the piping plate hole with ø70 mm hole-core drill.

2. For the right and right bottom piping
• Line according to the arrows marked on the lower left
and right side of the installation plate. The meeting point
of the extended line is the centre of the hole. Another
method is by putting measuring tape at position as
shown in the diagram above. The hole centre is
obtained by measuring the distance namely 150 mm
and 125 mm for left and right hole respectively.
• Drill the piping hole at either the right or the left and the
hole should be slightly slanted to the outdoor side.

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3. For the embedded piping

(This can be used for left rear piping & left bottom piping also.)

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10.2.5. CONNECT THE CABLE TO THE

INDOOR UNIT
1. The inside and outside connecting cable can be connected
without removing the front grille.
2. Connecting cable between indoor unit and outdoor unit
shall be approved polychloroprene sheathed 3 (C7CK,
C9CK, C12CK, V7CK, V9CK, V12CK) or 5 (A7CK, A9CK,
A12CK, W7CK, W9CK, W12CK) × 1.5 mm2 flexible cord,
type designation 245 IEC 57 or heavier cord.
• Ensure the color of wires of outdoor unit and the
terminal Nos. are the same to the indoor’s respectively.
• Earth lead wire shall be longer than the other lead wires
as shown in the figure for the electrical safety in case of
the slipping out of the cord from the anchorage.

• Secure the cable onto the control board with the holder
(clamper).

INSTALLATION OF AIR PURIFYING FILTERS

1. Open the front panel.

2. Remove the air filters.
3. Put air purifying filters (left) and triple deodorizing filter
(right) into place as shown in illustration below.

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HOW TO TAKE OUT FRONT GRILLE 10.3. OUTDOOR UNIT

Please follow the steps below to take out front grille if
10.3.1. SELECT THE BEST LOCATION
necessary such as when servicing.
(Refer to “Select the best location”
1. Set the vertical airflow direction louver to the horizontal
position. section)
2. Slide down the two caps on the front grille as shown in the
illustration below, and then remove the two mounting
screws. 10.3.2. INSTALL THE OUTDOOR UNIT
3. Pull the lower section of the front grille towards you to
remove the front grille. • After selecting the best location, start installation according
to Indoor/Outdoor Unit Installation Diagram.
When reinstalling the front grille, first set the vertical 1. Fix the unit on concrete or rigid frame firmly and horizontally
airflow direction louver to the horizontal position and
then carry out above steps 2 - 3 in the reverse order. by bolt nut. (ø10 mm).
2. When installing at roof, please consider strong wind and
earthquake. Please fasten the installation stand firmly with
bolt or nails.

AUTO SWITCH OPERATION

The below operations will be performed by pressing the

“AUTO” switch.
10.3.3. CONNECTING THE PIPING
1. AUTO OPERATION MODE Connecting The Piping To Indoor Unit
The Auto operation will be activated immediately once the Please make flare after inserting flare nut (locate at joint portion
Auto Switch is pressed. of tube assembly) onto the copper pipe. (In case of using long
2. TEST RUN OPERATION (FOR PUMP DOWN/SERVICING piping)
PURPOSE) Connect the piping
The Test Run operation will be activated if the Auto Switch • Align the center of piping and sufficiently tighten the flare
is pressed continuously for more than 5 sec. to below 10 nut with fingers.
sec.. A “pep” sound will occur at the fifth sec., in order to • Further tighten the flare nut with torque wrench in specified
identify the starting of Test Run operation torque as stated in the table.
3. REMOTE CONTROLLER RECEIVING SOUND ON/OFF
The ON/OFF of Remote Controller receiving sound can be
change over by pressing the “AUTO” Switch continuously
for 10 sec. and above. A “pep”, “pep” sound will occur at the
tenth sec., in order to indicate the “ON/OFF” change over of
remote control receiving sound.

MODEL Piping size (Torque)

Gas Liquid
C7CK, C9CK, A7CK,
A9CK, V7CK, V9CK, 3/8” (42 N.m) 1/4” (18 N.m)
W7CK, W9CK
C12CK, A12CK, 1/2” (55 N.m) 1/4” (18 N.m)
V12CK, W12CK

Connecting The Piping To Outdoor Unit

Decide piping length and then cut by using pipe cutter. Remove
burrs from cut edge. Make flare after inserting the flare nut
(located at valve) onto the copper pipe.
Align center of piping to valves and then tighten with torque
wrench to the specified torque as stated in the table.

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CUTTING AND FLARING THE PIPING

1. Please cut using pipe cutter and then remove the burrs.
2. Remove the burrs by using reamer. If burrs is not
removed, gas leakage may be caused.
Turn the piping end down to avoid the metal powder
entering the pipe.
3. Please make flare after inserting the flare nut onto the
copper pipes.

10.3.4. (a) EVACUATION OF THE EQUIPMENT (FOR EUROPE & OCEANIA DESTINATION)

WHEN INSTALLING AN AIR CONDITIONER, BE SURE TO EVACUATE THE AIR INSIDE THE INDOOR UNIT AND PIPES in the
following procedure.

1. Connect a charging hose with a push pin to the Low and High side of a charging set and the service port of the 3-way valve.
• Be sure to connect the end of the charging hose with the push pin to the service port.
2. Connect the center hose of the charging set to a vacuum pump with check valve, or vacuum pump and vacuum pump adaptor.
3. Turn on the power switch of the vacuum pump and make sure that the needle in the gauge moves from 0 cmHg (0 MPa) to
-76 cmHg (-0.1 MPa). Then evacuate the air approximately ten minutes.
4. Close the Low side valve of the charging set and turn off the vacuum pump. Make sure that the needle in the gauge does not
move after approximately five minutes.
Note: BE SURE TO FOLLOW THIS PROCEDURE IN ORDER TO AVOID REFRIGERANT GAS LEAKAGE.
5. Disconnect the charging hose from the vacuum pump and from the service port of the 3-way valve.
6. Tighten the service port caps of the 3-way valve at torque of 18 N.m with a torque wrench.
7. Remove the valve caps of both of the 2-way valve and 3-way valve. Position both of the valves to “OPEN” using a hexagonal
wrench (4 mm).
8. Mount valve caps onto the 2-way valve and the 3-way valve.
• Be sure to check for gas leakage.

CAUTION
• If gauge needle does not move from 0 cmHg (0 MPa) to -76 cmHg (-0.1 MPa), in step 3 above take the following measure:
• If the leak stops when the piping connections are tightened further, continue working from step 3.
• If the leak does not stop when the connections are retightened, repair the location of leak.
• Do not release refrigerant during piping work for installation and reinstallation. Take care of the liquid refrigerant, it may cause
frostbite.

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10.3.5. (b) AIR PURGING OF THE PIPING AND INDOOR UNIT

The remaining air in the Refrigeration cycle which contains moisture may cause malfunction on the compressor.
1. Remove the caps from the 2-way and 3-way valves.
2. Remove the service-port cap from the 3-way valves.
3. To open the valve, turn the valve stem of 2-way valve counter-clockwise approx. 90° and hold it there for ten seconds, then
close it.
4. Check gas-leakage of the connecting portion of the pipings.
For the left pipings, refer to item 4(A).
5. To open 2-way valve again, turn the valve stem counter-clockwise until it stops.

4(A). Checking gas leakage for the left piping.

(1) * Connect the manifold gauge to the service port of 3-way (2) * Keep it for 5-10 minutes.
valve. * Ensure that the pressure indicated on the gauge is the
* Measure the pressure. same as that of measured during the first time.

10.3.6. CONNECT THE CABLE TO THE OUTDOOR UNIT

1. Remove the control board cover from the unit by loosening the screw.
2. Connecting cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 3 (C7CK, C9CK, C12CK,
V7CK, V9CK, V12CK) or 5 (A7CK, A9CK, A12CK, W7CK, W9CK, W12CK) × 1.5 mm2 flexible cord, type designation 245 IEC
57 or heavier cord.

3. Secure the cable onto the control board with the holder (clamper).
4. Attach the control board cover back to the original position with the screw.

10.3.7. PIPE INSULATION

1. Please carry out insulation at pipe connection portion as mentioned in Indoor/Outdoor Unit Installation Diagram. Please wrap
the insulated piping end to prevent water from going inside the piping.
2. If drain hose or connecting piping is in the room (where dew may form), please increase the insulation by using POLY-E FOAM
with thickness 6 mm or above.

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DISPOSAL OF OUTDOOR UNIT DRAIN WATER

NOTE:
• If a drain elbow is used, the unit should be placed on a These equipment shall be connected to a suitable mains network
stand which is taller than 3 cm. with a main impedance less than the following:
CS-A9CKP / CU-A9CKP5: 0.46 Ω
• If the unit is used in an area where temperature falls below CS-C12CKP / CU-C12CKP5: 0.47 Ω
0°C for 2 or 3 days in succession, it is recommended not to CS-A12CKP / CU-A12CKP5: 0.47 Ω
CS-V12CKP / CU-V12CKP5: 0.45 Ω
use a drain elbow, for the drain water freezes and the fan
CS-W12CKP / CU-W12CKP5: 0.45 Ω
will not rotate.

CHECK ITEMS

Is there any gas leakage at flare nut connections?

Has the heat insulation been carried out at flare nut

connection?

Is the connecting cable being fixed to terminal board firmly?

Is the connecting cable being clamped firmly?

Is the drainage OK?

CHECK THE DRAINAGE (Refer to “Check the drainage” section)

• Open front panel and remove air filters. Is the earth wire connection properly done?
(Drainage checking can be carried out without removing the
front grille.) Is the indoor unit properly hooked to the installation plate?

• Pour a glass of water into the drain tray-styrofoam. Is the power supply voltage complied with rated value?
• Ensure that water flows out from drain hose of the indoor
Is there any abnormal sound?
unit.
Is the cooling operation normal?

Is the thermostat operation normal?

Is the remote control’s LCD operation normal?

Is the air purifying filter installed?

EVALUATION OF THE PERFORMANCE

• Operate the unit at cooling operation mode for fifteen

minutes or more.
• Measure the temperature of the intake and discharge air.
• Ensure the difference between the intake temperature and
the discharge is more than 8°C.

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11 2-way, 3-way Valve

2-way Valve (Liquid Side) 3-way Valve (Gas Side)

Works Shaft Position Shaft Position Service Port

Shipping Close Close Close

(With valve cap) (With valve cap) (With cap)

Evacuation Close Close Open

(Installation and (Counter-Clockwise) (Clockwise) (Push-pin)
Re-installation)

Operation Open Open Close

(With valve cap) (With valve cap) (With cap)

Pumping down Close Open Open

(Transferring) (Clockwise) (Counter-Clockwise) (Connected manifold
gauge)

Evacuation Open Open Open

(Servicing) With vacuum pump

Gas charging Open Open Open

(Servicing) (With charging cylinder)

Pressure check Open

(Servicing) Open Open (Connected manifold
gauge)

Gas releasing Open

(Servicing) Open Open (Connected manifold
gauge)

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11.1. Evacuation of the Equipment (For Europe & Oceania Destination)

11.1.1. Evacuation of Installation

WHEN INSTALLING AN AIR CONDITIONER, BE SURE TO If air remain in the indoor unit and refrigeration pipes, it will
EVACUATE THE AIR INSIDE THE INDOOR UNIT AND PIPES affect the compressor, reduce to cooling capacity, and could
in the following procedure. lead to a malfunction.

Procedure:
1. Connect a charging hose with a push pin to the Low 5. Disconnect the charging hose from the vacuum pump
side of a charging set and the service port of a 3-way and from the service port of the 3-way valve.
valve. 6. Tighten the service port cap at a torque of 18 N.m with
• Be sure to connect the end of the charging hose with the a torque wrench.
push pin to the service port. 7. Remove the valve caps of the 2-way valve and the 3-
2. Connect the centre hose of the charging set to a way valve. Position both of the valves to “open” using
vacuum pump. a hexagonal wrench (4 mm).
3. Turn on the power switch of the vacuum pump and 8. Mount the valve caps onto the 2-way and 3-way valves.
make sure that the needle in the gauge moves from 0 • Be sure to check for gas leakage.
MPa (0 cmHg) to -0.1 MPa (-76 cmHg). Then evacuate
the air for approximately ten minutes.
4. Close the Low side valve of the charging set and turn
Caution
off the vacuum pump. Make sure that the needle in the If gauge needle does not move from 0 cmHg to -76
gauge does not move after approximately five minutes. cmHg in step (3) above, take the following measures:
BE SURE TO TAKE THIS PROCEDURE IN ORDER TO If the leaks stop when the piping connections are
AVOID GAS LEAKAGE. tightened further, continue working from step (3).
If the leaks do not stop when the connections are
retightened, repair the location of the leak.

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11.1.2. Pumping down

Procedure:
1. Confirm that both the 2-way and 3-way valves are set to 6. Operate the air conditioner at the cooling cycle and
the opened position. stop it when the gauge indicates 0 MPa (0 kg/cm2G).
• Remove the valve stem caps and confirm that the valve If the unit cannot be operated at the cooling condition
stems are in the opened position. (weather is rather cool), short the Pumping Down pins
• Be sure to use a hexagonal wrench to operate the valve on the Main Control P.C.B.
stems. (Simply press the pumping down button if it is
2. Operate the unit for 10 to 15 minutes. equipped.)
3. Stop operation and wait for 3 minutes, then connect the So that the unit can be operated.
charge set to the service port of the 3-way valve. 7. Immediately set the 3-way valve to the closed position.
• Connect the charge hose with the push pin to the Gas • Do this quickly so that the gauge ends up indicating 0.1
service port. MPa (1 kg/cm2G) to 0.3 MPa (3 kg/cm2G).
4. Air purging of the charge hose. 8. Use refrigerant reclaiming equipment to collect
• Open the low-pressure valve on the charge set slightly refrigerant from indoor unit and pipes.
to purge air from the charge hose. 9. Disconnect the charge set, and mount the 2-way and 3-
5. Set the 2-way valve to the closed position. way valve’s stem caps and the service port caps.
• Use a torque wrench to tighten the service port cap to a
torque of 18 N.m.
• Be sure to check for gas leakage.
10. Disconnect pipes from indoor unit and outdoor unit.

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11.1.3. Evacuation of Re-installation

WHEN REINSTALLING AN AIR CONDITIONER, BE SURE TO If air remain in the indoor unit and refrigeration pipes, it will
EVACUATE THE AIR INSIDE THE INDOOR UNIT AND PIPES affect the compressor, reduce to cooling capacity, and could
in the following procedure. lead to a malfunction.

Procedure:
1. Connect a charging hose with a push pin to the Low 7. Tighten the service port cap at a torque of 18 N.m with
side of a charging set and the service port of the 3-way a torque wrench.
valve. 8. Remove the valve caps of the 2-way valve and the 3-
• Be sure to connect the end of the charging hose with the way valve. Position both of the valves to “open” using
push pin to the service port. a hexagonal wrench (4 mm).
2. Connect the centre hose of the charging set to a 9. Mount the valve caps onto the 2-way and 3-way valves.
vacuum pump. • BE SURE TO USE REFRIGERANT RECLAIMING
3. Turn on the power switch of the vacuum pump and EQUIPMENT WHILE DISCHARGING THE
make sure that the needle in the gauge moves from 0 REFRIGERANT.
MPa (0 cmHg) to -0.1 MPa (-76 cmHg). Then evacuate • Purge the air from charge set’s centre hose.
the air for approximately ten minutes.
• Be sure to check for gas leakage.
4. Close the Low side valve of the charging set and turn
off the vacuum pump. Make sure that the needle in the
Caution
gauge does not move after approximately five minutes. If gauge needle does not move from 0 MPA (0 cmHg)
BE SURE TO TAKE THIS PROCEDURE IN ORDER TO to -0.1 MPa (-76 cmHg) in step (3) above, take the
following measures:
AVOID GAS LEAKAGE.
If the leaks stop when the piping connections are
5. Disconnect the charging hose from the vacuum pump. tightened further, continue working from step 3.
6. Charge the pipes and indoor unit with gas refrigerant If the leaks do not stop when the connections are
from 3-way valve service port, and then discharge the retightened, repair the location of the leak.
refrigerant until low side (gas side) gauge needle
indicates 0.3 MPa (3 kg/cm 2).

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11.1.4. Balance refrigerant of the 2-way, 3-way valves

(Lack of refrigerant in the refrigeration cycle)

Procedure:
1. Confirm that both the 2-way and 3-way valves are set to
the open position.
2. Connect the charge set to the 3-way valve’s service
port.
• Leave the valve on the charge set closed.
• Connect the charge hose with the push-pin to the
service port.
3. Connect the charge set’s centre hose to refrigerant
reclaiming equipment.
• Purge the air from charge hose.
4. Open the valve (Low side) on the charge set and
discharge the refrigerant until the gauge indicates 0.05
MPa (0.5 kg/cm2G) to 0.1 MPa (1 kg/cm2G).
• If there is no air in the refrigeration cycle (the pressure
when the air conditioner is not running is higher than 0.1
MPa (1 kg/cm2G), discharge the refrigerant until the
gauge indicates 0.05 MPa (0.5 km/cm2G) to 0.1 MPa (1
kg/cm2G). If this is the case, it will not be necessary to
apply a evacuation.
• Discharge the refrigerant gradually; if it is discharged
too suddenly, the refrigeration oil will also be
discharged.
5. Turn on refrigerant reclaiming equipment.

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11.1.5. Evacuation
(No refrigerant in the refrigeration cycle)

Procedure:
1. Connect the vacuum pump to the charge set’s centre
hose.
2. Evacuation for approximately one hour.
• Confirm that the gauge needle has moved toward -0.1
MPa (-76 cmHg) [vacuum of 4 mmHg or less.]
3. Close the valve (Low side) on the charge set, turn off
the vacuum pump, and confirm that the gauge needle
does not move (approximately 5 minutes after turning
off the vacuum pump).
4. Disconnect the charge hose from the vacuum pump.
• Vacuum pump oil
If the vacuum pump oil becomes dirty or depleted,
replenish as needed.

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11.1.6. Gas charging

(After Evacuation)

Procedure:
1. Connect the charge hose to the charging cylinder.
• Connect the charge hose which you disconnected from This is different from previous procedures. Because you are
charging with liquid refrigerant from the gas side, absolutely do
the vacuum pump to the valve at the bottom of the no attempt to charge with large amount of liquid refrigerant
cylinder. while operating the air conditioner.
2. Purge the air from the charge hose.
• Open the valve at the bottom of the cylinder and press 4. Immediately disconnect the charge hose from the 3-
the check valve on the charge set to purge the air (be way valve’s service port.
careful of the liquid refrigerant). • Stopping partway will allow the refrigerant to be
3. Open the valve (Low side) on the charge set and charge discharged.
the system with liquid refrigerant. • If the system has been charged with liquid refrigerant
• If the system cannot be charged with the specified while operating the air conditioner, turn off the air
amount of refrigerant, it can be charged with a little at a conditioner before disconnecting the hose.
time (approximately 150 g each time) while operating 5. Mount the valve stem caps and the service port cap.
the air conditioner in the cooling cycle; however, one
• Use torque wrench to tighten the service port cap to a
time is not sufficient, wait approximately 1 minute and
torque of 18 N.m.
then repeat the procedure. (pumping down-pin)
• Be sure to check for gas leakage.

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11.2. Air Purging of the Piping and Indoor Unit

11.2.1. Air purging (Installation)

Required tools: hexagonal wrench, adjustable wrench, torque The air in the indoor unit and in the piping must be purged. If air
wrenches, wrench to hold the joints and gas leak detector. remains in the refrigeration pipings, it will affect the
The additional gas for air purging has been charged in the compressor, reduce the cooling capacity, and could lead to a
outdoor unit. malfunction.
However, if the flare connections have not been done correctly
and there gas leaks, a gas cylinder and the charge set will be
needed.

Service port cap

Be sure, using a torque wrench to tighten the service port cap (after using the service port), so that it prevents the gas
leakage from the refrigeration cycle.

Procedure:
1. Recheck the piping connections. 6. Set the 3-way valve to the opened position.
2. Open the valve stem of the 2-way valve counter- 7. Mount the valve stem nuts to the 2-way and 3-way
clockwise approximately 90°, wait 10 seconds, and valves.
then set it to closed position. 8. Check for gas leakage.
• Be sure to use a hexagonal wrench to operate the valve • At this time, especially check for gas leakage from the 2-
stem. way and 3-way’s stem nuts, and from the service port
3. Check for gas leakage. cap.
• Check the flare connection for gas leakage.
4. Purge the air from the system Caution
If gas leakage is discovered in step (3) above, take
• Set the 2-way valve to the open position and remove the the following measures:
cap from the 3-way valve’s service port. If the leaks stop when the piping connections are
• Using the hexagonal wrench to press the valve core pin, tightened further, continue working from step (4).
discharge for three seconds and then wait for one If the gas leaks do not stop when the connections are
retightened, repair the location of the leak, discharge
minute.
all of the gas through the service port, and then
Repeat this three times. recharge with the specified amount of gas from a gas
5. Use torque wrench to tighten the service port cap to a cylinder.
torque of 1.8 kg.m. (18 N.m).

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11.2.2. Pumping down (Re-installation)

Procedure:
1. Confirm that both the 2-way and 3-way valves are set to 5. Set the 2-way valve to the close position.
the opened position.
• Remove the valve stem caps and confirm that the valve 6. Operate the air conditioner at the cooling cycle and
stems are in the opened position. stop it when the gauge indicates 1 kg/cm2G (0.1 MPa).
• Be sure to use a hexagonal wrench to operate the valve
stems.
7. Immediately set the 3-way valve to the closed position.
• Do this quickly so that the gauge ends up indicating 3 to
2. Operate the unit for 10 to 15 minutes. 5 kg/cm2G (0.3 to 0.5 MPa).

3. Stop operation and wait for 3 minutes, then connect the 8. Disconnect the charge set, and mount the 2-way and 3-
charge set to the service port of the 3-way valve. way valve’s stem nuts and the service port caps.
• Connect the charge hose with the push pin to the Gas • Use a torque wrench to tighten the service port cap to a
service port. torque of 1.8 kg.m (18 N.m).
• Be sure to check for gas leakage.
4. Air purging of the charge hose.
• Open the low-pressure valve on the charge set slightly
to purge air from the charge hose.

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11.2.3. Re-air purging (Re-installation)

Procedure:
1. Confirm that both the 2-way and 3-way valves are set to 5. Discharge the refrigerant.
the closed position. • Close the valve on the charging cylinder and discharge
the refrigerant until the gauge indicates 3 to 5 kg/cm2G
2. Connect the charge set and a charging cylinder to the (0.3 to 0.5 MPa)
service port of the 3-way valve.
• Leave the valve on the charging cylinder closed. 6. Disconnect the charge set and the charging cylinder,
and set the 2-way and 3-way valves to the open
position.
3. Air purging.
• Be sure to use a hexagonal wrench to operate the valve
• Open the valves on the charging cylinder and the
stems.
charge set. Purge the air by loosening the flare nut on
the 2-way valve approximately 45° for 3 seconds then
closing it for 1 minute; repeat 3 times. 7. Mount the valve stem nuts and the service port cap.
• After purging the air, use a torque wrench to tighten the • Be sure to use a torque wrench to tighten the service
flare nut on the 2-way valve. port cap to a torque 1.8 kg.m (18 N.m).
• Be sure to check for gas leakage.
4. Check for gas leakage.
• Check the flare connections for gas leakage.

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11.2.4. Balance refrigerant of the 2-way, 3-way valves

(Gas leakage)

Procedure:
1. Confirm that both the 2-way and 3-way valves are set to
the open position.

2. Connect the charge set to the 3-way valve’s service

port.
• Leave the valve on the charge set closed.
• Connect the charge hose with the push pin to the
service port.

3. Open the valves (Low side) on the charge set and

discharge the refrigerant until the gauge indicates 0.5
to 1 kg/cm2G (0.05 to 0.1 MPa) .
• If there is no air in the refrigeration cycle [the pressure
when the air conditioner is not running is higher than 1
kg/cm2G (0.1 MPa)], discharge the refrigerant until the
gauge indicates 0.5 to 1 kg/cm2G (0.05 to 0.1 MPa). If
this is the case, it will not be necessary to apply a
evacuation.
• Discharge the refrigerant gradually; if it is discharged
too suddenly, the refrigeration oil will be discharged.

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11.2.5. Evacuation (Installation)

(No refrigerant in the refrigeration cycle)

Procedure:
1. Connect the vacuum pump to the charge set’s centre
hose.

2. Evacuation for approximately one hour.

• Confirm that the gauge needle has moved toward -0.1
MPa (-76 cmHg) [vacuum of 4 mmHg or less.]

3. Close the valve (Low side) on the charge set, turn off
the vacuum pump, and confirm that the gauge needle
does not move (approximately 5 minutes after turning
off the vacuum pump).

4. Disconnect the charge hose from the vacuum pump.

• Vacuum pump oil
If the vacuum pump oil becomes dirty or depleted,
replenish as needed.

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11.2.6. Gas charging

(After Evacuation)

Procedure:
1. Connect the charge hose to the charging cylinder.
• Connect the charge hose which you disconnected from This is different from previous procedures. Because you are
charging with liquid refrigerant from the gas side, absolutely do
the vacuum pump to the valve at the bottom of the no attempt to charge with large amount of liquid refrigerant
cylinder. while operating the air conditioner.
2. Purge the air from the charge hose.
• Open the valve at the bottom of the cylinder and press 4. Immediately disconnect the charge hose from the 3-
the check valve on the charge set to purge the air (be way valve’s service port.
careful of the liquid refrigerant). • Stopping partway will allow the refrigerant to be
3. Open the valve (Low side) on the charge set and charge discharged.
the system with liquid refrigerant. • If the system has been charged with liquid refrigerant
• If the system cannot be charged with the specified while operating the air conditioner, turn off the air
amount of refrigerant, it can be charged with a little at a conditioner before disconnecting the hose.
time (approximately 150 g each time) while operating 5. Mount the valve stem caps and the service port cap.
the air conditioner in the cooling cycle; however, one
• Use torque wrench to tighten the service port cap to a
time is not sufficient, wait approximately 1 minute and
torque of 18 N.m.
then repeat the procedure. (pumping down-pin)
• Be sure to check for gas leakage.

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12 Servicing Information
Caution:
• Pb free solder has a higher melting point than standard solder; Typically the melting point is 50 - 70°F (30 - 40°C) higher. Please use
a high temperature soldering iron. In case of the soldering iron with temperature control, please set it to 700 ± 20°F (370 ± 10°C).
• Pb free solder will tend to splash when heated too high (about 1100° F/600°C).

12.1. Indoor Electronic Controllers Removal Procedures

1. The Electronic Controller, a Signal Receiver and an

Indicator (Fig. 3) can be seen by the below steps:

• Remove the 2 caps and 2 screws at the bottom of the

Front Grille. (Fig. 1)

• Remove the Front Grille by releasing the 2 hooks at the

top of the Front Grille. (Fig. 1)

Fig. 1

• Remove the Control Board Cover by releasing the 2

tabs at left, 1 tab on top and 1 tab at right side of the
Control Board Cover. (Fig. 2)

Fig. 2

2. To remove the Electronic Controller:

• Release the Particular Piece. (Fig. 3)
• Release the hook that hold the Electronic Controller.
(Fig. 3)

Fig. 3

12.2. Indoor Fan Motor and Cross Flow Fan Removal Procedures

• Remove the Control Board by:-

− Releasing CN-REC/DISP connectors. (Fig. 4)

− Releasing CN-FM connectors. (Fig. 4)
− Releasing CN-ION connector. (Fig. 4)
− Releasing CN-STM connector. (Fig. 4)
− Removing the Earth Wire screw. (Fig. 4)
− Releasing the Intake Air Sensor. (Fig. 4)
− Releasing the Piping Sensor. (Fig. 4)
Fig. 4

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CS-A7CKP CU-A7CKP5 / CS-A9CKP CU-A9CKP5 / CS-A12CKP CU-A12CKP5

− Pulling out the Drain Hose from outlet to remove the

Discharge Grille. (Fig. 5)

− Removing the right and left screws. (Fig. 5)

− Then remove the Control Board by pressing down the

hook at the left and pushing up the right hook. (Fig. 5)

− Releasing connector lead wire Ionizer. (Fig. 5)

Fig. 5

− Release the Fan Motor leadwire by pressing the hook at

the center of the connector. (Fig. 6)

Fig. 6

− Remove the screw at the Cross Flow Fan. (Fig. 7)

− REMINDER - To reinstall the Fan Motor, adjust the

connector of the Fan Motor as shown in the Fig. 7.

Fig. 7

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 CS-A7CKP CU-A7CKP5 / CS-A9CKP CU-A9CKP5 / CS-A12CKP CU-A12CKP5

− Remove the screws at the left of the Evaporator. (Fig. 8)

Fig. 8

− Remove the Bearing. (Fig. 9)

− Push up the Evaporator and pull out the Cross Flow Fan
from shaft. By then, Fan Motor can be taken out. (Fig. 9)

Fig. 9

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CS-A7CKP CU-A7CKP5 / CS-A9CKP CU-A9CKP5 / CS-A12CKP CU-A12CKP5

• Remote Control Reset

When the batteries are inserted for the first time, or the
batteries are replaced, all the indications will blink and the
remote control might not work.
If this happen, remove the cover of the remote control and
you will find a resetting terminal, and by shorting it with a
minus screwdriver, it will return to normal.

• Changing the wireless remote control transmission

code

When two indoor units are installed in the same room, in

order to prevent operating errors caused by using two
remote controls, cut a jumper wire at the remote control
printed circuit board (J - A) and cut a jumper wire at the
indoor printed circuit board (JX4). It is possible to select
from 4 types of transmission codes including one at time of
delivery condition (0).

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 CS-A7CKP CU-A7CKP5 / CS-A9CKP CU-A9CKP5 / CS-A12CKP CU-A12CKP5

13 Troubleshooting Guide
13.1. Refrigeration cycle system
In order to diagnose malfunctions, make sure that there are no
electrical problems before inspecting the refrigeration cycle.
Such problems include insufficient insulation, problem with the
power source, malfunction of a compressor and a fan.
The normal outlet air temperature and pressure of the
refrigeration cycle depends on various conditions, the standard
values for them are shown in the table to the right.

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CS-A7CKP CU-A7CKP5 / CS-A9CKP CU-A9CKP5 / CS-A12CKP CU-A12CKP5

13.1.1. Relationship between the condition of the air conditioner and pressure and
electric current
Cooling Mode Heating Mode
Condition of the air
conditoner Low Pressure High Pressure Electric current Low Pressure High Pressure Electric current
during operation during operation

Insufficient refrigerant
(gas leakage)

Clogged capillary tube

or Strainer

Short circuit in the

indoor unit

Heat radiation
deficiency of the
outdoor unit

Inefficient compression

• Carry out the measurements of pressure, electric current, and temperature fifteen minutes after an operation is started.

13.1.2. Diagnosis methods of a malfunction of a compressor and 4-way valve

Nature of fault Symptom

• Electric current during operation becomes approximately 20% lower than the normal value.

Insufficient compressing of a compressor • The discharge tube of the compressor becomes abnormally hot (normally 70 to 90°C).

• The difference between high pressure and low pressure becomes almost zero.

• Electric current reaches a high level abnormally, and the value exceeds the limit of an
ammeter. In some cases, a breaker turns off.
Locked compressor
• The compressor is a humming sound.

• Electric current during operation becomes approximately 80% lower than the normal value.
Insufficient switches of the 4-way valve
• The temperature different between from the discharge tube to the 4-way valve and from
suction tube to the 4-way valve becomes almost zero.

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14 Technical Data

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CS-A7CKP CU-A7CKP5 / CS-A9CKP CU-A9CKP5 / CS-A12CKP CU-A12CKP5

220V Outdoor Temp. (°C)

Indoor wet 30 35 40 46
bulb temp. TC SHC IP TC SHC IP TC SHC IP TC SHC IP
17.0°C 1.98 1.50 0.53 1.85 1.44 0.57 1.72 1.39 0.61 1.57 1.32 0.66
19.0°C 2.00 0.58
19.5°C 2.18 1.57 0.54 2.04 1.51 0.58 1.89 1.46 0.62 1.72 1.39 0.67
22.0°C 2.37 1.63 0.55 2.22 1.57 0.59 2.06 1.51 0.63 1.88 1.44 0.68

230V Outdoor Temp. (°C)

Indoor wet 30 35 40 46
bulb temp. TC SHC IP TC SHC IP TC SHC IP TC SHC IP
17.0°C 2.03 1.54 0.55 1.90 1.48 0.59 1.77 1.42 0.63 1.61 1.35 0.68
19.0°C 2.05 0.60
19.5°C 2.23 1.61 0.56 2.09 1.55 0.60 1.94 1.49 0.64 1.77 1.42 0.69
22.0°C 2.43 1.67 0.57 2.27 1.61 0.61 2.12 1.55 0.66 1.92 1.48 0.71

240V Outdoor Temp. (°C)

Indoor wet 30 35 40 46
bulb temp. TC SHC IP TC SHC IP TC SHC IP TC SHC IP
17.0°C 2.03 1.54 0.58 1.90 1.48 0.62 1.77 1.42 0.66 1.61 1.35 0.72
19.0°C 2.05 0.63
19.5°C 2.23 1.61 0.59 2.09 1.55 0.63 1.94 1.49 0.68 1.77 1.42 0.73
22.0°C 2.43 1.67 0.60 2.27 1.61 0.64 2.12 1.55 0.69 1.92 1.48 0.74

220V Outdoor Temp. (°C)

Indoor wet 30 35 40 46
bulb temp. TC SHC IP TC SHC IP TC SHC IP TC SHC IP
17.0°C 2.63 1.99 0.73 2.46 1.91 0.79 2.28 1.84 0.84 2.08 1.75 0.91
19.0°C 2.65 0.80
19.5°C 2.89 2.09 0.75 2.70 2.00 0.80 2.51 1.93 0.86 2.28 1.84 0.93
22.0°C 3.15 2.16 0.76 2.94 2.08 0.82 2.73 2.01 0.87 2.49 1.91 0.94

230V Outdoor Temp. (°C)

Indoor wet 30 35 40 46
bulb temp. TC SHC IP TC SHC IP TC SHC IP TC SHC IP
17.0°C 2.68 2.03 0.76 2.50 1.95 0.82 2.33 1.87 0.87 2.12 1.78 0.94
19.0°C 2.70 0.83
19.5°C 2.94 2.13 0.77 2.75 2.04 0.83 2.56 1.97 0.89 2.32 1.87 0.96
22.0°C 3.20 2.20 0.79 2.99 2.12 0.85 2.79 2.05 0.91 2.53 1.95 0.98

240V Outdoor Temp. (°C)

Indoor wet 30 35 40 46
bulb temp. TC SHC IP TC SHC IP TC SHC IP TC SHC IP
17.0°C 2.63 1.99 0.80 2.46 1.91 0.86 2.28 1.84 0.92 2.08 1.75 0.99
19.0°C 2.65 0.87
19.5°C 2.89 2.09 0.81 2.70 2.00 0.87 2.51 1.93 0.93 2.28 1.84 1.01
22.0°C 3.15 2.16 0.83 2.94 2.08 0.89 2.73 2.01 0.95 2.49 1.91 1.03

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 CS-A7CKP CU-A7CKP5 / CS-A9CKP CU-A9CKP5 / CS-A12CKP CU-A12CKP5

220V Outdoor Temp. (°C)

Indoor wet 30 35 40 46
bulb temp. TC SHC IP TC SHC IP TC SHC IP TC SHC IP
17.0°C 3.49 2.65 0.99 3.26 2.54 1.06 3.03 2.44 1.14 2.76 2.32 1.23
19.0°C 3.52 1.08
19.5°C 3.83 2.77 1.01 3.58 2.66 1.08 3.33 2.56 1.16 3.03 2.44 1.25
22.0°C 4.18 2.87 1.03 3.90 2.76 1.10 3.63 2.67 1.18 3.30 2.54 1.27

230V Outdoor Temp. (°C)

Indoor wet 30 35 40 46
bulb temp. TC SHC IP TC SHC IP TC SHC IP TC SHC IP
17.0°C 3.57 2.71 1.03 3.34 2.60 1.10 3.10 2.49 1.18 2.82 2.37 1.27
19.0°C 3.60 1.12
19.5°C 3.92 2.83 1.04 3.66 2.72 1.12 3.41 2.62 1.20 3.10 2.50 1.30
22.0°C 4.27 2.94 1.06 3.99 2.83 1.14 3.72 2.73 1.22 3.38 2.60 1.32

240V Outdoor Temp. (°C)

Indoor wet 30 35 40 46
bulb temp. TC SHC IP TC SHC IP TC SHC IP TC SHC IP
17.0°C 3.54 2.68 1.07 3.31 2.57 1.15 3.08 2.47 1.23 2.80 2.35 1.33
19.0°C 3.57 1.17
19.5°C 3.89 2.81 1.09 3.63 2.70 1.17 3.38 2.60 1.26 3.07 2.47 1.35
22.0°C 4.24 2.92 1.11 3.96 2.80 1.20 3.68 2.70 1.28 3.35 2.58 1.38

TC - Total Cooling Capacity (kW) Indoor 27°C/19°C

SHC - Sensible Heat Capacity (kW) Outdoor 35°C/24°C
IP - Input Power (kW)

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CS-A7CKP CU-A7CKP5 / CS-A9CKP CU-A9CKP5 / CS-A12CKP CU-A12CKP5

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 CS-A7CKP CU-A7CKP5 / CS-A9CKP CU-A9CKP5 / CS-A12CKP CU-A12CKP5

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CS-A7CKP CU-A7CKP5 / CS-A9CKP CU-A9CKP5 / CS-A12CKP CU-A12CKP5

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 CS-A7CKP CU-A7CKP5 / CS-A9CKP CU-A9CKP5 / CS-A12CKP CU-A12CKP5

15 Exploded View

Note:
The above exploded view is for the purpose of parts disassembly and replacement.
The non-numbered parts are not kept as standard service parts.

79
CS-A7CKP CU-A7CKP5 / CS-A9CKP CU-A9CKP5 / CS-A12CKP CU-A12CKP5

16 Replacement Parts List

<Model: CS-A7CK / CS-A9CK / CS-A12CK>
REF. PART NAME & DESCRIPTION QTY. CS-A7CK CS-A9CK CS-A12CK REMARKS
NO.
1 CHASSY COMPLETE 1 CWD50C1246 ← ←
2 FAN MOTOR 1 CWA921060 ← ← 0
3 CROSS FLOW FAN COMPLETE 1 CWH02C1012 ← ←
4 BEARING ASS’Y 1 CWH64K007 ← ←
5 SCREW - CROSS FLOW FAN 1 CWH4580304 ← ←
6 EVAPORATOR 1 CWB30C1270 ← CWB30C1269
7 FLARE NUT 1 CWH6002140(1/4”) ← ←
8 FLARE NUT 1 CWT25005 (3/8”) ← CWT25007 (1/2”)
9 INTAKE AIR SENSOR HOLDER 1 CWH32142 ← ←
10 DISCHARGE GRILLE COMPLETE 1 CWE20C2101 ← ←
11 VERTICAL VANE 12 CWE241068 ← ←
12 CONNECTING BAR 2 CWE261024 ← ←
13 AIR SWING MOTOR 1 CWA98259 ← ← 0
14 LEAD WIRE - AIR SWING MOTOR 1 CWA67C3977 ← ←
15 CAP - DRAIN TRAY 1 CWH52C1001 ← ←
16 HORIZONTAL VANE 1 CWE241070 ← ←
17 PARTICULAR PIECE 1 CWD932162 ← ←
18 CONTROL BOARD 1 (1) CWH102103 ← ←
(2) CWH102103A ← ←
(3) CWH102103 ← ←
19 TERMINAL BOARD COMPLETE 1 CWA28C2162 ← CWA28C2163 0
20 POWER SUPPLY CORD 1 CWA20C2159 ← ←
21 ELECTRONIC CONTROLLER - MAIN 1 CWA742879 CWA742878 CWA742873 0
22 LEAD WIRE - FAN MOTOR 1 CWA67C3729 ← ←
23 ELECTRONIC CONTROLLER - RECEIVER 1 CWA73C1124 ← ← 0
24 SENSOR COMPLETE 1 CWA50C2122 ← ← 0
25 CONTROL BOARD FRONT COVER 1 CWH131090 ← ←
26 ELECTRONIC CONTROLLER - INDICATOR 1 CWE39C1064 ← ← 0
27 LEAD WIRE - INDICATOR 1 CWA67C3637 ← ←
28 INDICATOR HOLDER 1 CWD932163 ← ←
29 CONTROL BOARD TOP COVER 1 CWH131091 ← ←
30 REMOTE CONTROL COMPLETE 1 CWA75C2294 ← ← 0
31 FRONT GRILLE COMPLETE 1 CWE11C2756 ← ←
32 INTAKE GRILLE 1 CWE22C1081 ← ←
33 CONTROL PANEL 1 CWE312274 ← ←
34 DECORATION BASE (R) 1 CWE351067 ← ←
35 DECORATION BASE (L) 1 CWE351068 ← ←
36 GRILLE DOOR 1 CWE141033 ← ←
37 AIR FILTER 2 CWD001047 ← ←
38 SCREW - FRONT GRILLE 2 XTN4+16C ← ←
39 CAP - FRONT GRILLE 2 CWH521062 ← ←
40 DRAIN HOSE 1 CWH85285 ← ←
41 INSTALLATION PLATE 1 CWH36K1006 ← ←
42 BAG COMPLETE - INSTALLATION SCREW 1 CWH82C067 ← ←
43 AIR PURIFYING FILTER 1 CWMD00C0001 ← ← 0
44 TRIPLE DEODORIZING FILTER 1 CWMD00C0004 ← ← 0
45 FULCRUM 1 CWH621013 ← ←
46 ELECTRONIC CONTROLLER - IONIZER 1 CWA743099 ← ←
47 CASING - IONIZER 1 CWD932228 ← ←
48 ION GENERATOR 1 CWH94C0001 ← ←

(Note)
• All parts are supplied from MAICO, Malaysia (Vendor Code: 061).
• “O” marked parts are recommended to be kept in stock.
• (1) — CS-A7CKP, CS-A9CKP, CS-A12CKP (Europe & CIS).
• (2) — CS-A7CKP-2, CS-A9CKP-2, CS-A12CKP-2 (Oceania).
• (3) — CS-A7CKP-6, CS-A9CKP-6, CS-A12CKP-6 (Turkey & Tunisia).

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 CS-A7CKP CU-A7CKP5 / CS-A9CKP CU-A9CKP5 / CS-A12CKP CU-A12CKP5

17 Exploded View

Note:
The above exploded view is for the purpose of parts disassembly and replacement.
The non-numbered parts are not kept as standard service parts.

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CS-A7CKP CU-A7CKP5 / CS-A9CKP CU-A9CKP5 / CS-A12CKP CU-A12CKP5

18 Replacement Parts List

<Model: CU-A7CK / CU-A9CK / CU-A12CK>
REF. NO. PART NAME & DESCRIPTION QTY. CU-A7CK CU-A9CK CU-A12CK REMARKS
1 CHASSY ASS’Y 1 CWD50K2073 ← CWD50K2074
2 SOUND PROOF MATERIAL 1 CWG302110 ← ←
3 FAN MOTOR BRACKET 1 CWD541030 ← ←
4 SCREW - FAN MOTOR BRACKET 2 CWH55413 ← ←
5 FAN MOTOR 1 CWA951119 ← CWA951121 0
6 SCREW - FAN MOTOR MOUNT 3 CWH55406 ← ←
7 PROPELLER FAN ASS’Y 1 CWH03K1006 ← ←
8 NUT - PROPELLER FAN 1 CWH56053 ← ←
9 COMPRESSOR 1 2RS122D5BC02 QK156PAB QJ208PAA 0
10 ANTI - VIBRATION BUSHING 3 CWH50077 CWH501024 ←
11 NUT - COMPRESSOR MOUNT 3 CWH56000 ← CWH4582065
12 CONDENSER 1 CWB32C1258 ← CWB32C1266
13 4-WAY VALVE 1 CWB001012 ← CWB00003 0
14 STRAINER 1 CWB11025 ← ←
15 HOLDER COUPLING ASS’Y 1 CWH351023 ← ←
16 2-WAY VALVE (LIQUID) 1 CWB021055 ← ← 0
17 3-WAY VALVE (GAS) 1 CWB011061 ← CWB011060 0
18 OVERLOAD PROTECTOR 1 CWA121050 CWA121112 CWA121060 0
19 HOLDER - O.L.P. 1 CWH7041200 - -
20 TERMINAL COVER 1 CWH171011 CWH171021 ←
21 NUT - TERMINAL COVER 1 CWH7080300 CWH561020 ←
22 SOUND PROOF BOARD 1 CWH151022 ← CWH151023
23 CONTROL BOARD 1 CWH102102 ← ←
24 TERMINAL BOARD ASS’Y 1 (1) CWA28K1034 CWA28C2169 CWA28K1034
(2) CWA28K1034 CWA28C2169 CWA28K1034
(3) CWA28C2169 CWA28C2169 CWA28K1034
25 CAPACITOR - COMPRESSOR 1 DS371206CPNA CWA312076 DS371306CPNA 0
(20µF, 370VAC) (30µF, 400VAC) (30µF, 370VAC)
26 HOLDER CAPACITOR 1 CWH30057 ← ←
27 CAPACITOR - FAN MOTOR 1 CWA31618 ← ← 0
(2.0µF, 450VAC)
28 CABINET SIDE PLATE (L) 1 CWE041031A ← ←
29 CABINET SIDE PLATE (R) 1 CWE041032A ← CWE041033A
30 CABINET FRONT PLATE 1 CWE06K1034 ← ←
31 WIRE NET 1 CWD041021A ← CWD041023A
32 CABINET TOP PLATE 1 CWE031014A ← ←
33 PLATE - C. B. COVER 1 CWH131088 ← ←
34 CONTROL BOARD COVER 1 CWH131092 ← ←
35 HANDLE 1 CWE161010 ← ←
36 OPERATION INSTRUCTIONS 1 (1) CWF563838 ← ←
(2) CWF563840 ← ←
(3) CWF563843 ← ←
37 INSTALLATION INSTRUCTIONS (ENGLISH, 1 CWF612304 ← ←
FRANCAIS, ESPANOL & DEUTSCH)
38 INSTALLATION INSTRUCTIONS (ITALIANO, 1 (1) CWF612305 ← ←
NEDERLANDS, PORTUGUES & GREEK) (2) - - -
(3) - - -
39 INSTALLATION INSTRUCTIONS (RUSSIA) 1 (1) CWF612306 ← ←
(2) - - -
(3) - - -
40 L-TUBE 1 CWH5850080 ← ←
41 TUBE ASS’Y (CHECK VALVE/CAPILLARY) 1 CWT01C2639 CWT01C2670 CWT01C2640
42 ELECTRO MAGNETIC SWITCH 1 CWA00059 ← ← 0
43 ELECTROLYTIC CAPACITOR 1 CWA32C067 ← ← 0
44 ELECTRO MAGNETIC SWITCH 1 K6C2C7A00001 ← ← 0
45 TEMPERATURE RELAY 1 CWA14C1009 ← ← 0
46 V-COIL COMPLETE 1 CWA43C2069 ← CWA43C2054 0

(Note)
• All parts are supplied from MAICO, Malaysia (Vendor Code: 061).
• “O” marked parts are recommended to be kept in stock.
• (1) — CU-A7CKP5, CU-A9CKP5, CU-A12CKP5 (Europe & CIS).
• (2) — CU-A7CKP5-2, CU-A9CKP5-2, CU-A12CKP5-2 (Oceania).
• (3) — CU-A7CKP5-6, CU-A9CKP5-6, CU-A12CKP5-6 (Turkey & Tunisia).

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19 Electronic Circuit Diagram

• CS-A7CK / CU-A7CK
• CS-A9CK / CU-A9CK
• CS-A12CK / CU-A12CK

SCHEMATIC DIAGRAM 1/3

MAIN

R12 R08
1k 5.1k

C02

R11 C01 R07

RECEIVER 1k 10k

(MX3) R18 D05

CN-RCV1 R19 D06
3 1 D07
R20
2 2
1 3 R21 D08
5
4 — R22 D09
R23 D10
R24 D11
R25 D12
C29
INDICATOR
(PH10)
SW101 CN-DISP
AUTO
1 2 10
9
CN-DISP
8 R13
1 7 220
POWER GRN D101 2 6
3 5
QUIET ORG D102 R14
4 4 330
5 3
D103
TIMER ORG 6 2 R15
7 1 330
GRN ION1 D104
ION R16
ION2 D105 110
POWERFUL ORG D106
R17
C23 330

R60 C28
10k

R61 R62
10k 1k
R06 Q08 c
24k
b
22k 22k e

(XH4)
C22 R58 R59
CN-HA 10k 1k
4
3
2
1

R30 C04
20k R33 C08
15k

(PH4)
AIR TEMP. SENSOR
(15k 3950) CN-TH
1
2
1 R/B RS 8
3
4
2 Vcc GND 7
IC02
PIPE TEMP. SENSOR R05 R04
43 /2W 43 /2W A52BR9020F
(20k 3950) 10 9 g 7 3 CS D0 6

11 6 C05
4 SK D1 5
RY-PWR f
12 5
RY-HOT e
13 4
d
(PH5) 14 c 3
CN-STM 15 2
b
1 1
2 2
16 a1
3 3 8
4 4 IC05
5 5
A52A2003GR
(ZH5)
AIR SWING STEPPING MOTOR DRIVE
MOTOR

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CS-A7CKP CU-A7CKP5 / CS-A9CKP CU-A9CKP5 / CS-A12CKP CU-A12CKP5

SCHEMATIC DIAGRAM 2/3

CN-ION
TEST R01 R02
1k 4
10k 3
2
1

C31 D01

C32
BZ
Q01 BZ1
c
b R55
1k
4.7k 10k e

R10
Q02 SSR02
10k c
b
4.7k 10k
64

P46/AD6 63

P45/AD5 62

P44/AD4 61

P43/AD3 60

P42/AD2 59

P41/AD1 58

57

56

55

54

53

52

51

P73 50

49

e
P40/AD0

P67

P66

P65

P64

P75

P74

P72
P47/AD7

P71
1 P50/A8 48 SSR01
Q03 c
P51/A9 P70 b
2 RY-PWR DRIVE SIGNAL RY-HOT DRIVE SIGNAL 47
STEPPING 4.7k 10k e
P52/A10 MOTOR
DRIVE TIMER SHORTEN P03/INTP3 46
3
SIGNAL
FAN SPEED
P53/A11 P02/INTP2
4 BUZZER DRIVE SIGNAL 45

P54/A12 AUTO OPERATION P01/INTP1

5 DISPLAY TEST RUN 44
REMOTE CONTROL
P55/A13 SOUND C06 R34
6 P00/INTP0 43
51k
P56/A14 POWER CLOCK INPUT
7 Vss1 42
REMOTE-CONTROL
8 P57/A15 IC01 COMMAND INPUT X1
41
A52D0022GB75 X2
R32
Vss0 OSC 150k
9 40

10 VDD0 IC 39 X01
4.096MHz
(47pF X 2) T01
11 P30 XT1 38 5 8
ERROR FEEDBACK INTAKE AIR TEMP
2 13
12 P31 XT2 37
PIPE TEMP
IONIZER ON/OFF
CONTROL Reset
13 P32 RESET 36
DEICE
DETECTION
14 P33 AUTO RESTART AVd0 35
POWER C10 R41 R44
GROUND 1.0k 1k
Q04
P34 AVref
15 34 R31 POWER CLOCK
GENERATOR
P22/SCK

P11/AN1
P17/AN7

P16/AN6

P15/AN5

P14/AN4

P13/AN3

P12/AN2

P35 P10 33 C16 c

16
P20/S1

P21/S0

VDD1

/ANO b
AVss

R56
P36

P23

P24

P25

e
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32

Q07 c
b
R64 JX1
6.2k e

R63
6.2k
JX2 R09
10k
R37 C15 JX4
10k R38

REMOTE CONTROL NO.

JX3 JX4 RX1
0 SHORT SHORT
1 SHORT OPEN
2 OPEN OPEN 10K
3 SHORT OPEN 10K

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 CS-A7CKP CU-A7CKP5 / CS-A9CKP CU-A9CKP5 / CS-A12CKP CU-A12CKP5

SCHEMATIC DIAGRAM 3/3

CN2
F1 T01 D101 HV
CH1
4 R101
R2 R3 R6
3
VIN
2 R16
1
GND
ERR D102
c c Q4
EH-4P Q1 R13 R9 C5
b b
Q2 C* R102
c D6
e C3 D1 e D3 -5.7kV
b Q5 R15 C10 D5
c
C2 C1 e C3 R4 b Z02
C9
4.7k 10k e
R3 R14 R10
C6 R12 C7

D1 CN3
D2 Z01 GND

AC 220-240V
50/60Hz
1 1

BL
2 2
BL/B BL/B
3 3

TRS
AC 4 4
RY-PWR
(WHT)
COIL REVERSING VALVE

BL
FM(BLU) BL
D13 CT01 GRY
HOT(RED) ELECTROLYTIC

MAGNETIC RELAY B
C09 + D14 R35 R CAPACITOR
RB501V-40 10k
RY-HOT
SSR02
CR02

CR01

16V FUSE BL
250V 3 2 8
2A
GRY
6 7 4

PROTECTOR
OVER LOAD
O BR BL
GRY

IC04 IC03 3 1 4 2 8 1
DB01 REGULATOR REGULATOR MAGNETIC
RELAY A Y

COMPRESSOR
~
5 6 7
+
I 12V O I 5V O
C17 C14 C11 Y B B
~
G G
35V 25V 16V
(NHG)
FAN MOTOR
R B

R47 R57 C03 ZNR03 B

39k/2W 39k/2W 511U R B
B
R03 R26 4 PC01 1 CAPACITOR
820 3.9k R48 SSR01 CAPACITOR
3 2 510
ZNR01 L01
R29 C07 511U
4.7k
C19
C-FM
C12 R36 400V
1k

CN-FM 1 2 3 4 5

ZD1
R43 7.5EL1
RX1 R50 R51 C21
R49 100k 10k R52
1k 6.2k 50V
c
R42 JX3 C18 R53 (PH-3)
24k b 10k
c
R40 e b CN-FB1 FAN
10k
e R54 3 MOTOR
Q05 6.2k 2
1
RESET SIGNAL Q06
GENERATION
RESET SIGNAL
GENERATION

85
CS-A7CKP CU-A7CKP5 / CS-A9CKP CU-A9CKP5 / CS-A12CKP CU-A12CKP5

86
 CS-A7CKP CU-A7CKP5 / CS-A9CKP CU-A9CKP5 / CS-A12CKP CU-A12CKP5

How to use electronic circuit diagram

TIMER TABLE
Test Mode
Name Time (When test point Remarks
Short-circuited)
Real Timer 1 hr. 1 min.
10 min. 10 sec.
1 min. 1 sec.
Time Delay Safety Control 2 min. 58 sec. 0 sec.
Forced Operation 60 sec. 0 sec.
Time Save Control 7 min. 4.2 sec.
Anti-Freezing 4 min. 0 sec.
Auto Mode Judgement 25 sec. 0 sec.
Soft Dry OFF 6 min. 36 sec.
ON 10 min. 60 sec. Soft Dry: 10 min. operation
Cooling 40 sec. 4 sec.
70 sec. 7 sec.
Deodorizing Control 20 sec. 2 sec.
180 sec. 18 sec.
Soft Dry 40 sec. 4 sec.
360 sec. 36 sec.
Comp. Reverse Rotation Detection 5 min. 30 sec. Comp. ON 5 min. and above
2 min. 0 sec.
Comp./ Fan Motor Delay Timer 1.6 sec. 0 sec.
Powerful Mode Operation 15 min. 15 sec.
Random Auto Restart Control 0 ~ 62 sec. 0 ~ 6.2 sec.
TRS Recovery Detection 12 min. 72 sec.
6 min. 36 sec.
3 min. 18 sec.
1 min. 6 sec.
Time Save Control (Heating) 30 min. 3 sec.
4 Way Valve Control (Delay) 5 min. 30 sec.
Deice Operation Occurs 60 min. 6 sec. 60 min. after previous deice
4 min. 24 sec. Continuously 4 min. Comp. ON
50 sec. 0 sec. TRS ON continuously for 50 sec. check
Overload Deice Timer 1 min. 6 sec. Comp. ON continuously for 1 min. check
Deice End 12 min. 72 sec. Max. Operation time
30 sec. 3 sec. 30 sec. Comp. OFF after deice
10 sec. 1 sec. 4-Way Valve ON 10 sec. later after deice
Deice Operation (Extend) 60 sec. 0 sec.
120 sec. 0 sec.
180 sec. 0 sec.
Hotstart Finish 30 sec. 0 sec.
Ion OFF Timer 10 min. 10 sec.

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CS-A7CKP CU-A7CKP5 / CS-A9CKP CU-A9CKP5 / CS-A12CKP CU-A12CKP5

19.1. REMOTE CONTROL

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 CS-A7CKP CU-A7CKP5 / CS-A9CKP CU-A9CKP5 / CS-A12CKP CU-A12CKP5

19.2. PRINT PATTERN

INDOOR UNIT PRINTED CIRCUIT BOARD

TOP VIEW

89
CS-A7CKP CU-A7CKP5 / CS-A9CKP CU-A9CKP5 / CS-A12CKP CU-A12CKP5

19.3. PRINT PATTERN

INDOOR UNIT PRINTED CIRCUIT BOARD

BOTTOM VIEW

90 [MAICO] Printed in Malaysia