II

MRV S (4-6HP)
Service Manual
SYJS-01-2017 REV.A Edition: 2017-01

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 CONTENTS
1. General Information.............................................................................................................................................. 1
1.1 Outdoor Models and External Appearance.................................................................................................... 1

1.2 Feature.......................................................................................................................................................... 2
2. Specification......................................................................................................................................................... 3
3. Dimension............................................................................................................................................................ 7
4. Piping Diagram.................................................................................................................................................... 8
5. Wiring Diagram.................................................................................................................................................. 10
6. Capacity Calculation Due to Capacity Modification Coefficient.......................................................................... 12
7. Operation Range................................................................................................................................................ 14
8. Sound Level....................................................................................................................................................... 15

9. Outdoor Piping Installation................................................................................................................................. 16

9.1 Safety........................................................................................................................................................... 16
9.2 Installation Instruction................................................................................................................................... 18
9.3 Trial Operation and the Performance........................................................................................................... 28
10. Outdoor Wiring Installation............................................................................................................................... 30

11. Outdoor Unit PCB............................................................................................................................................. 32

12. Dip Switch Setting............................................................................................................................................ 33
13. Monitor Tools.................................................................................................................................................... 35
14. Outdoor Unit Control........................................................................................................................................ 37
15. Failure Code..................................................................................................................................................... 41
16. Troubleshooting................................................................................................................................................ 45

Appendix I: Sensor Resistance Table..................................................................................................................... 65

Appendix II: Enthalpy-Humidity Chart.................................................................................................................... 74

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 1. General Information

1.1 Outdoor models and external appearance

AU042FPERA
AU052FPERA
AU062FPERA
AU04IFPERA
AU05IFPERA
AU06IFPERA

1
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 1.2 Feature

New platform, new outlook

Spiral air outlet grille

Better outlook and lower noise

Built-in charge valve

Safer and easier maintenance

Round corner
Better outlook & safer

High energy efficiency

5
1 DC inverter compressor 2 8

Haier takes DC INV. compressor, 5% power input lower. (14kw)

7
6
2 DC fan motor and 550mm big fan 3

38% power input lower and 8% airflow higher

3 Larger heat exchanger
9
Heat exchange area rise 10%. (14kw)
4
4 Charge Valve
Built-in charge valve enables safer and easier maintenance
5 Low standby power
New PCB program, reduce 20% standby power consumption 1

Comfort
6 New aerodynamics fan
550mm super big diameter aerospace helix fan. Lowering sound level 3 dB(A)
7 Enlarged air inlet path and spiral air outlet path
Air flow direction follows the grill direction. Lowering sound level 2-4 dB(A) AVERAGE
EER
8 Automatic sound-lowering program 11%
Night mode set by PCB, 8dB(A) lower

Convenience

9 Double side “4 ” handles

Easy to carry
10“888” test panel
All running data & error code can be checked from "888" screen, which
is easy for installers
11
11“Four-way” pipe connection
4-way (front, back, left & right) pipe connection, easy to design and install

2
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 2. Specification
Model AU042FPERA AU052FPERA AU062FPERA
Power supply Ph/V/Hz 1Ph,220-230V,50/60Hz
Rated capacity kW 12.60 14.00 15.50
Rated capacity kBtu/h 42.99 47.77 52.89
Capacity (46°C) kW 11.2 12.6 14
Rated power input kW 3.11 3.51 4.31
Cooling Power input (46°C) kW 3.77 4.25 5.22
Max. power input kW 7.20 7.50 7.80
EER 4.05 3.99 3.60
Rated current A 14.73 16.62 20.41
Max. current A 34.09 35.51 36.93
Rated capacity kW 14.20 16.00 18.00
Rated capacity kBtu/h 48.45 54.59 61.42
Rated power input kW 3.18 3.72 4.39
Heating Max. power input kW 6.9 7.2 7.5
COP 4.47 4.30 4.10
Rated current A 15.06 17.61 20.79
Max. current A 32.67 34.09 35.51
Brand MITSUBISHI ELECTRIC
Model MNB42FFAMC-L
Type Rotary Rotary Rotary
Compressor quantity 1 INV 1 INV 1 INV
Capacity W 13780 13780 13780
Power Input W 4130 4130 4130
Compressor
Rated current(RLA) A 15.8 15.8 15.8
Speed rps 75 80 85
Crankcase Heater W 33 33 33
Refrigerant oil brand IDEMITSUKOSAN CO.LTD
Refrigerant oil type FV50S FV50S FV50S
Refrigerant oil charge ml 1100 1100 1100
Brand NIDEC NIDEC NIDEC
Model SIC-88FWJ-F1180-1
Voltage 310V 310V 310V
IP Class IP44 IP44 IP44
Type DC DC DC
Insulation class E E E
Outdoor fan motor
Safe class I I I
Power Input W 180 180 180
Output W 120 120 120
Rated current A 0.4 0.4 0.4
Capacitor μF / / /
Speed rpm 900 900 900

3
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 Model AU042FPERA AU052FPERA AU062FPERA
Power supply Ph/V/Hz 1PH,220-230V,50/60Hz
Brand Haier Haier Haier
Model / / /
Outdoor Material Plastic Plastic Plastic
fan Type Axial Axial Axial
Diameter mm 550 550 550
Height mm 200 200 200
Number of rows 2 2 2
Tube pitch(a)x row pitch(b) mm 21*18.186 21*18.186 21*18.186
Fin spacing mm 1.4 1.4 1.4
Fin type (code) Hydrophilic aluminium
Outdoor Fin Coating Type Optional Clear lacquer Clear lacquer Clear lacquer
coil Salt Spray Test Duration Hour 168 168 168
Inner groove tube
Tube outside dia. and type
mm Ф7 Ф7 Ф7
Coil length x height mm 1077*1315 1077*1315 1077*1315
Number of circuits 7 7 7
Coating type Powder coating Powder coating Powder coating
Cabinet Salt Spray Test Duration Hour 72 72 72
coating Sheet Metal Material Hot zinc plate Hot zinc plate Hot zinc plate
Sheet Metal Thickness mm 0.8 0.8 0.8
Control panel enclosure IP class Standard IP24 IP24 IP24
Outdoor air flow m3/h 7200 7200 7200
Outdoor sound level(sound pressure level) dB(A) 50 51 53
Outdoor sound level(sound power level) dB(A) 68 69 70
Dimension(W*H*D) mm 950/370/1340 950/370/1340 950/370/1340
Outdoor Packing (W*H*D) mm 1023/471/1420 1023/471/1420 1023/471/1420
unit Net weight kg 115 115 115
Gross weight kg 123 123 123
Type R410A R410A R410A
Refrigerant
Charged volume kg 4 4 4
Throttle type EXV EXV EXV
Design pressure MPa 4.15 4.15 4.15
Liquid pipe mm 9.52 9.52 9.52
Gas pipe mm 15.88 15.88 15.88
Total pipe length m 300 300 300
Refrigerant Max. pipe length
m 175/150 175/150 175/150
piping (Equivalent/ Actual)
50 (Outdoor higher than indoor)
Max. Diff. indoor/outdoor unit m
40 (Indoor higher than outdoor)
Max. Diff. indoor/indoor unit m 15 15 15
Connectable indoor unit ratio % 50%~130% 50%~130% 50%~130%
Maximum indoor units Piece 8 10 13
Connection Power wiring mm2 10 10 10
wiring Signal wiring mm2 Shield wire:(0.75-2)*2
Cooling:-15~48
Operation Range °C
Heating:-20~27
Norminal condition: indoor temperature (cooling): 27°C DB/19°C WB, indoor temperature (heating):
20°CDB/14.5°C WB.
Outdoor temperature(cooling): 35°C DB/24°C WB, outdoor temperature(heating): 7°C DB/6°C WB The data is
measured with 7.5m equivalent pipe and 0 m height difference.
The noise level will be measured in the third octave band limited values in the semi-anechoic chamber, using a
Real Time Analyser calibrated sound intensity meter. It is a sound pressure noise level.

4
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 Model AU04IFPERA AU05IFPERA AU06IFPERA
Power supply Ph/V/Hz 3N,380-400V,50/60Hz
Rated capacity kW 12.60 14.00 15.50
Rated capacity kBtu/h 42.99 47.77 52.89
Capacity (46°C) kW 11.2 12.6 14
Rated power input kW 3.11 3.51 4.31
Cooling Power input (46°C) kW 3.77 4.25 5.22
Max. power input kW 7.20 7.50 7.80
EER 4.05 3.99 3.60
Rated current A 4.92 5.56 6.82
Max. current A 11.40 11.87 12.35
Rated capacity kW 14.20 16.00 18.00
Rated capacity kBtu/h 48.45 54.59 61.42
Rated power input kW 3.18 3.72 4.39
Heating Max. power input kW 6.9 7.2 7.5
COP 4.47 4.30 4.10
Rated current A 5.03 5.89 6.95
Max. current A 10.92 11.40 11.87
Brand MITSUBISHI ELECTRIC
Model MNB42FFDMC-L
Type Rotary Rotary Rotary
Compressor quantity 1 INV 1 INV 1 INV
Capacity W 13780 13780 13780
Power Input W 4060 4060 4060
Compressor
Rated current(RLA) A 12.3 12.3 12.3
Speed rps 75 80 85
Crankcase Heater W 33 33 33
Refrigerant oil brand IDEMITSUKOSAN CO.LTD
Refrigerant oil type FV50S FV50S FV50S
Refrigerant oil charge ml 1400 1400 1400
Brand NIDEC NIDEC NIDEC
Model SIC-88FWJ-F1180-1
Voltage 310V 310V 310V
IP Class IP44 IP44 IP44
Type DC DC DC
Insulation class E E E
Outdoor fan motor
Safe class I I I
Power Input W 180 180 180
Output W 120 120 120
Rated current A 0.4 0.4 0.4
Capacitor μF / / /
Speed rpm 900 900 900

5
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 Model AU04IFPERA AU05IFPERA AU06IFPERA
Power supply Ph/V/Hz 3N,380-400V,50/60Hz
Brand Haier Haier Haier
Model / / /
Outdoor Material Plastic Plastic Plastic
fan Type Axial Axial Axial
Diameter mm 550 550 550
Height mm 200 200 200
Number of rows 2 2 2
Tube pitch(a)x row pitch(b) mm 21*18.186 21*18.186 21*18.186
Fin spacing mm 1.4 1.4 1.4
Fin type (code) Hydrophilic aluminium
Outdoor Fin Coating Type Optional Clear lacquer Clear lacquer Clear lacquer
coil Salt Spray Test Duration Hour 168 168 168
Inner groove tube
Tube outside dia. and type
mm Ф7 Ф7 Ф7
Coil length x height mm 1077*1315 1077*1315 1077*1315
Number of circuits 7 7 7
Coating type Powder coating Powder coating Powder coating
Cabinet Salt Spray Test Duration Hour 72 72 72
coating Sheet Metal Material Hot zinc plate Hot zinc plate Hot zinc plate
Sheet Metal Thickness mm 0.8 0.8 0.8
Control panel enclosure IP class Standard IP24 IP24 IP24
Outdoor air flow m3/h 7200 7200 7200
Outdoor sound level(sound pressure level) dB(A) 50 51 53
Outdoor sound level(sound power level) dB(A) 68 69 70
Dimension(W*H*D) mm 950/370/1340 950/370/1340 950/370/1340
Outdoor Packing (W*H*D) mm 1023/471/1420 1023/471/1420 1023/471/1420
unit Net weight kg 115 115 115
Gross weight kg 123 123 123
Type R410A R410A R410A
Refrigerant
Charged volume kg 4 4 4
Throttle type EXV EXV EXV
Design pressure MPa 4.15 4.15 4.15
Liquid pipe mm 9.52 9.52 9.52
Gas pipe mm 15.88 15.88 15.88
Total pipe length m 300 300 300
Refrigerant Max. pipe length(Equivalent/
m 175/150 175/150 175/150
piping Actual)
50 (Outdoor higher than indoor)
Max. Diff. indoor/outdoor unit m
40 (Indoor higher than outdoor)
Max. Diff. indoor/indoor unit m 15 15 15
Connectable indoor unit ratio % 50%~130% 50%~130% 50%~130%
Maximum indoor units Piece 8 10 13
Connection Power wiring mm2 4 4 4
wiring Signal wiring mm2 Shield wire:(0.75-2)*2
Cooling:-15~48
Operation Range °C
Heating:-20~27
Norminal condition: indoor temperature (cooling): 27°C DB/19°C WB, indoor temperature (heating):
20°CDB/14.5°C WB.
Outdoor temperature(cooling): 35°C DB/24°C WB, outdoor temperature(heating): 7°C DB/6°C WB The data is
measured with 7.5m equivalent pipe and 0 m height difference.
The noise level will be measured in the third octave band limited values in the semi-anechoic chamber, using a
Real Time Analyser calibrated sound intensity meter. It is a sound pressure noise level.

6
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 3. Dimension

1340

600

370 406 450

950

7
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 c
4. Piping Diagram

e
4wv s
Gas pipe stop
valve d Condensor

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Pd SV1 Ta

Oil segregator
Te
HPS
Ps

8
Td
Ts
PMV
Tc1

Tc2

Subcooler
Inverter EEV
compressor
Liquid pipe Gas-liquid segregator
stop valve
 Part name Sign Function Date Note

Capacity control, meet indoor load

request by adjusting frequency and
Compressor / 20°C
opening and closing fixing frequency
compressor.

Pressure switch HPS High pressure protection 4.15Mpa, OFF

Electronic
EEV In heating, refrigerant flow control Φ3.0
expansion valve

1. Keep balance of high/low pressure AC220V

Solenoid valve SV1 when compressor starts up and stops Open when power is on, 2A
2. High/low pressure protection close when power is off.

AC220V electrified in
Changing over between cooling and
4-way valve 4WV heating; powered off in
heating cooling or defrosting.

In heating, compressor frequency

Pd adjustment, abnormal pressure
protection
Pressure sensor
In cooling, compressor frequency
Ps adjustment, abnormal pressure
protection

Td Detect the top temp. of compressor R(80°C)=50K

B(25/80°C)=4450K

Ts Detect the top suction of compressor

Ta Detect ambient temp., set primary fan

speed and control defrost condition
Temp. sensor
R(80°C)=10K
Tc1
B(25/80°C)=3700K
Detect the temp. of before and after
the supercooling valve to control the
supercooling valve open angle.
Tc2

Detect frost condition of outdoor heat

Te exchanger

Heater Chi Used to heat oil in inverter compressor 28W, 220V, one

9
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 5. Wiring Diagram
AU04/05/062FPERA

0150518287

B R
HPS TD TE(1) TS TA Ps Pd
P
ACL CN13 CN12
6.3A 250VAC ACL AC-N AC-L

ACN FUSE1 CN1 CN2 CN3 CN4CN5 CN6 CN7 CN29 CN28 CN30
ACN PE
CN19 CN21
PTC BM2
CN18
BM1
INV BOARD
ON

ON
12345678

12345678

DK1
LED4 LED2
CN17 W DK2
SV1 CN9 B CN8
V
4WV
CN16 CONTROL CN20
C O MP
W
U
Tfin
JP3
EEV R
HEATER
CN25
BOARD CN8 M CN1

CN24 LD1 LD2 LD3

ACFAN2 CN31
CN33
CN15
SW3 SW1
ACFAN1 DISPLAY CN30
SW4 SW2 CN10
CN14 BOARD
CN11
DCFAN1 CN12 !
SW01 SW02
DCFAN2 CN13 CN31 CN32

M M

P M V2

CN5
CN7
Tc1 CN31-1
PQ LN
CN8 CN9

0151800273 Tc2 0151800303

CN11-1
CN11 CN31-2 CN1 CN34

Symbol Signification Symbol Signification

G B A 12V ACL Power Line Compressor
Power Zero Line
Ts Inhale Sensor
ACN
<WARNING> SV1 Unloading Valve
Td
Compressor
Spray Valve Vent Sensor
Please power off firstly for about 10 SV2
minutes before checking control box, 4WV Four-way Valve Ambient
Ta Temperature
and make sure the voltage between LED1-4 Lights Sensor
P and N below 20V. DCFAN2 DC Fan Motor Defrost
TE(1) Temperature
DCFAN1
<NOTES> DC Fan Motor Sensor
High Pressure
Please check the power firstly before test, and make HPS Switch Tc1/Tc2 Pipe Sensor
sure the crankcase heater powering on for 12 hours
High/low Pressure Ipm Temperature
at least to protecting compressor. PS/Pd Switch
Tfin Sensor
Forbid connecting the power wire to the "P" and Electric Electronic
HEATER Heating Tape EEV
"Q" otherwise the control board will be damaged. Expend Valve
Digital
Please make sure the earth wire connecting the grou- LD1-3 Display Tubes SW1-4 Button
nding hole on the electric box firmly.
SW01,02 Thumbwheels BM1,2 Dial Switch
PC Monitor

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 AU04/05/06IFPERA

HPS Td Te1 Ts Ta Ps Pd 0150520925

P
ACL
6.3A 250VAC
LD1 LD2 LD3
FUSE1
CN1CN2 CN3 CN4 CN5 CN6 CN7 CN29 CN28 CN30
ACN CN19
PTC CN21
CN26
BM2 BM1 CN32
CN18 LED
SV1 LED4 LED2
ON

ON
CN9 CN31
12345678

12345678
CN17 DISPLAY
CN30
CN20
4WV CN16
EEV
M
HEATER
CN25
CONTROL BOARD CN8
SW01 SW02
ACFAN2
CN31 Tfin
CN15
SW3 SW1 CN33 CN24 B
W
ACFAN1 W
RY2 CN8 CN7 V COMP

CN14 SW4 SW2 R

U
M M
LED1
CN10 INV BOARD T
DCFAN1 DCFAN2
CN11 P P1 S
LED3 R
CN20
REACTOR
B
W
R
W
B
CN11 CN7 CN2
CN1
0151800273
CN10
L1 L2 L3 N E
CN5 CN8 CN9 NOISE FILER
L1 L2 L3 N E
PMV2
TX2
TX1

CT

R S T N PQ
R W B BL
<SYMBOL>
Symbol Signification Symbol Signification
<WARNING>
Crankcase High Pressure
Please power off firstly for about 10 HEATER Pd Sensor
Heater
minutes before checking control box, Low Pressure
Unloading Ps Sensor
and make sure the voltage between SV1 Valve
P and N below 20V. EEV Electronic
Four-way Expend Valve
<NOTES> 4WV Valve
Tfin Ipm Temperature
·Please check the power firstly before test , and make DCFAN1,2 DC Fan Motor Sensor
sure the crankcase heater powering on for 12 hours Electronic
ACFAN1,2 AC Fan Motor PMV2
at least to protecting compressor. Expend Valve
High Pressure
·The switch BM1-1 is used for locking the indoor units HPS Switch TC1 Temp Sensor
number, the initial situation is “ OFF”. After power on, TX1
Compressor of Valve Plate
the display board will display 【U**】, “**” indicates Td Vent Sensor
TX2 TC2 Temp Sensor
the number of Indoor units that the outdoor unit can Defrost of Valve Plate
communicate with. If it can match the actual number Te1 Temperature W
Sensor White
of indoor units, please change “OFF” to “ON”, or else
fix the communication problem firstly. Compressor BL Blue
Ts Inhale Sensor
·Forbid connecting the power wire to the “P” and “Q”, B Black
otherwise the control board will be damaged. Ambient
Ta Temperature
·Please make sure the earth wire connecting the grou- Sensor R Red
nding hole on the electric box firmly.

11
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 6. Capacity Calculation Due to Capacity Modification Coefficient
(1) Calculation method of refrigerating capacity----cooling capacity to be known=refrigerating
capacity*(A*B*C*D*E)W
A. Capacity compensation value of indoor B. Capacity compensation value of outdoor
air wet-bulb temperature condition air dry-bulb temperature condition
1.2
Capacity modification value

Capacity modification value

1.2
1.1

1.1
1.0
1.0
0.9
0.9
0.8 -5 0 5 10 15 20 25 30 35 40 43
15 20 24
Indoor air dry-bulb temperature (°C ) Outdoor air wet-bulb temperature (°C )

C. Capacity modification value under airflow variation D. Capacity compensation suitable for
rate of indoor unit group (only for duct unit) total capability of indoor unit group
120
Capacity modification value

1.1
100

1.0 80

60
0.9

capacity
Standard
80 90 100 110 120 40

Airflow variation rate (%) 20

0 20 40 60 80 100 120 130

Total capacity of indoor unit group (%)

E. Capacity compensation value of pipe length, pipe diameter and height drop
Capacity modification value

1.00 Liquid pipe ： φ 12.7

Gas pipe ： φ 19.05
0.95
0.90 Liquid pipe ： φ 9.52
Gas pipe ： φ 15.88
0.85
0.80
0 20 40 60 80 100 120 140
Single way pipe length (m)

Notes for E:
Notes
(1) Thefor E: pipe (from outdoor to the first branch pipe) diameter should be enlarged one size
main
when
(1) Thethe single
mian pipeway pipeoutdoor
(from length to
is over 90m.
the first branch pipe) diameter should be enlarged one size
(2) When in cooling mode, outdoor is lower
when the single way pipe length is over 90m. than indoor; or when in heating mode, outdoor is higher than indoor, the
compensation
(2) factor
When in cooling should
mode, be decreased
outdoor the below
is lower than value
indoor; from in
or when figure E. mode, outdoor is higher than indoor, the
heating
compensation factor should
Vertical height drop between be decreased the below value from figure E.
5m 10m 15m 20m 25m 30m 35m 40m 45m 50m
indoor and outdoor
Adjustment factor 0.003 0.006 0.009 0.012 0.015 0.018 0.021 0.024 0.027 0.03

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 (2) Calculation method of refrigerating capacity----heating capacity to be known=refrigerating
capacity*(A*B*C*D*E*F)W

A. Capacity compensation value of indoor B. Capacity compensation value of outdoor air

air dry-bulb temperature condition wet-bulb temperature condition
1.2
1.2
1.1

1.1 1.0

0.9
1.0
0.8
0.9
0.7
0.8 0.6
15 20 24
Indoor air dry-bulb temperature (°C) 0.5
-15 -10 -5 0 5 10 15
Outdoor air wet-bulb temperature (°C)

C. Capacity modification value under airflow variation D. Capacity compensation suitable for
rate of indoor unit group (only for duct unit) total capability of indoor unit group
120
Capacity modification value
Capacity modification value

100
1.1
80

1.0 60

40

capacity
Standard
0.9
80 90 100 110 120 20

Airflow variation rate (%)

0 20 40 60 80 100 120 140

Total capacity of indoor unit group (%)

E. Capacity compensation value of pipe F. Capacity compensation value for defrost
length, pipe diameter and height drop capability of outdoor heat exchanger
1.0
Capacity compensation value
Capacity modification value

1.00 Liquid pipe ： φ 12.7

Gas pipe ： φ 19.05
0.95
0.90 Liquid pipe ： φ 9.52 0.9
Gas pipe ： φ 15.88
0.85
0.80
0 20 40 60 80 100 120 140 0.8
Single way pipe length (m) -15 -10 -5 0 5 10

Outdoor air wet-bulb temperature (°C)

Notes for E:
(1) The main pipe (from outdoor to the first branch pipe) diameter should be enlarged one size
when the single way pipe length is over 90m.
(2) When in cooling mode, outdoor is lower than indoor; or when in heating mode, outdoor is higher than indoor, the
compensation factor should be decreased the below value from figure E.
Vertical height drop between
5m 10m 15m 20m 25m 30m 35m 40m 45m 50m
indoor and outdoor
Adjustment factor 0.003 0.006 0.009 0.012 0.015 0.018 0.021 0.024 0.027 0.03

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 7. Operation range

Cooling
50
Heating
45 30

40 25
Outdoor temperature（℃DB）

Consecutive operation

Outdoor temperature（℃DB）
35 20

Consecutive operation
30 15

25 10

20 5

15 0

10 -5

5 -10

0 -15

-5 -20
10 15 20 25 30
-10
Indoor temperature（℃DB）
-15

10 15 20 25 30

Indoor temperature（℃DB）

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 8. Sound Level
(1) Testing illustration

1.18m
1.18m

1m
1m

2) Testing condition:
a. Unit running in the nominal condition
b. Test in the semi-anechoic chamber
c. Noise level varies from the actual factors such as room structure, etc.

AU042FPERA AU052FPERA
AU04IFPERA AU05IFPERA
70 70
Octave band sound pressure level dB
Octave band sound pressure level dB

NC-60 NC-60

60 60

NC-50 NC-50

50 50

NC-40 H NC-40 H

40 40

NC-30 NC-30

30 30

NC-20 NC-20

20 Limit of
20
Limit of
audible audible
continuous continuous
noise noise
10 10
63 125 250 500 1000 2000 4000 8000 63 125 250 500 1000 2000 4000 8000

Octave band center frequency (Hz) Octave band center frequency (Hz)

AU062FPERA
AU06IFPERA
70
Octave band sound pressure level dB

NC-60

60

NC-50

50

NC-40 H

40

NC-30

30

NC-20

20 Limit of
audible
continuous
noise
10
63 125 250 500 1000 2000 4000 8000
Octave band center frequency (Hz)

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 9. Outdoor Piping Installation
9.1 Safety
•  If the air conditioner is transferred to the others, this manual should be transferred together.
•  Before installation, please read "Safety precaution" carefully to confirm the correct installation.
•  The mentioned precaution includes " WARNING" and " CAUTION". The precaution caused death or heavy
injury for faulty installation will be listed in " WARNING". Even the cautions listed in " CAUTION" also may
cause serious accident. So both of them are related to the safety, and should be executed severely.
•  After installation, perform a trial and confirm everything normal, then introduce the operation manual to the user.
Besides, put the manual to the user and ask them to preserve it carefully.

WARNING
•  The installation or the maintenance should be performed by the authorized agency. Or the non-specialized
operation will cause water leakage, electric shock or fire etc accidents.
•  The installation should be executed as per the manual, or the faulty installation will cause water leakage, electric
shock or fire etc accidents.
•  Please install the unit at the space which can bear the weight. Or the unit will drop down to cause the human
injury.
•  The installation should defend against the typhoon, and the earthquake etc. Abnormal installation will cause the
unit fall down.
•  Use the correct cable and make reliable earthing. Fix the terminal firmly and the loose connection will cause
heating or fire etc accident.
•  The wiring should be in shape and can not be raised. Be earthed firmly and can not be clipped by the electric box
cover or the other plate. The incorrect installation will cause heating or fire.
•  When setting or transferring the unit, there should not be other air into the refrigerant system except for R410A.
The gas mixture will cause the abnormal high pressure which will cause break or human injury etc accidents.
•  When installation, please use the accessories with the unit or the special parts, or it will cause water leakage,
electric shock, fire, refrigerant leakage etc accidents.
•  Don't lead the water drainage pipe into the drainage groove with the poisonous gas, such as sulphur. Or the
poisonous gas will enter indoor.
•  In installation or after installation, please confirm if there is refrigerant leakage, please take measures for
ventilation. The refrigerant will cause poisonous gas as meeting fire.
•  Don't install the unit at the place where there may be flammable gas leakage. In case the gas leaks and gather
around the unit, it will cause fire.
•  The drainage pipe should be installed as per the manual to confirm the fluent drainage. Also take measures for
heat insulation against dew drop. Incorrect water pipe installation will cause water leakage even and make the
things wet.
•  For the liquid pipe and the gas pipe, take measures for heat insulation too. If there is no heat insulation, the dew
drop will wet the things.
•  If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or similarly qualified
persons in order to avoid a hazard.
•  This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental
capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction
concerning use of the appliance by a person responsible for their safety.
•  Children should be supervised to ensure that they do not play with the appliance.
•  This appliance can be used by children aged from 8 years and above and persons with reduced physical, sensory
or mental capabilities or lack of experience and knowledge if they have been given supervision or instruction
concerning use of the appliance in a safe way and understand the hazards involved. Children shall not play with
the appliance. Cleaning and user maintenance shall not be made by children without supervision.
•  The appliances are not intended to be operated by means of an external timer or separate remote-control system.
•  Keep the appliance and its cord out of reach of children less than 8 years.

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 CAUTION
•  Execute earthing for the unit. But the earthing wire can not be connected to the gas pipe, water pipe, lightening
rod or the telephone earthing wire. Improper earthing will cause electric shock.
•  Don't install the unit at the place where leaks the flammable gas. Or it will cause fire.
•  Execute the water drainage pipe according to the manual, improper installation will cause water leakage to wet
the family things.
•  The outdoor fan can not face to the flower or the other vegetable, or the blowing gas will make the flower dried
up.
•  Please ensure the maintenance room, if not, it will cause the maintenance person damaged.
•  When installing the unit on the roof or the other high place, to prevent the person falling down, please set the
fixed ladder and the railing at the passage.
•  Use the two-end spanner, and fasten the nut at proper torque. Don't fasten the nut excessively against the flared
section broken. Or it will cause refrigerant leakage and lack of oxygen.
•  Take measures for heat insulation to the refrigerant pipe, or there will be water leakage or dew drop to wet the
family things.
•  After finishing the refrigerant pipe, make leakage test by charging the nitrogen. In case the refrigerant leaks in a
small room and exceeds the limited concentration, it will cause lack of oxygen.
•  Don't use the other refrigerant except for R410A. The R410A pressure is 1.6 times higher than R22 pressure. The
refrigerant R410A tank is marked with pink sign.
•  Against charging different refrigerant, we changed the stop valve diameter of the R410A unit. To enhance
the compression consistence, we also changed the flared pipe dimension. Prepare the R410A specially tools
according to the below table.

R-410A specified tools Remarks

1 Gauge manifold Range: HP>4.5MPa, LP>2MPa
2 Charge hose Pressure: HP: 5.3MPa, LP: 3.5MPa
3 Electronic balance for charging R410A Can not use the measurable charging tank
4 Torque spanner
5 Flare tool
6 Copper pipe gauge for adjusting projecting margin
7 Vacuum pump adapter Must be with reverse stop valve
8 Leakage detector Can not use freon leakage detector, but the He detector

•  When charging refrigerant, the refrigerant must be taken out as liquid state from the tank.

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 9.2 Installation instruction

In installation, please check specially the below items:

•  If the connected units quantity and the total capacity is in the allowable range?
•  If the refrigerant pipe length is in the limited range?
•  If the pipe size is proper? And if the pipe is installed horizontally?
•  If the branch pipe is installed horizontally or vertically?
•  If the additional refrigerant is counted correctly and weighed by the standard balance?
•  If there is refrigerant leakage?
•  If all the indoor power supplies can be on/off simultaneously?
•  If the power voltage is in compliance with the data marked on the rating label?
•  If the address of indoors has been set?

(1) Before installation

1) Before installation, check if the model, power supply, pipe, wires and parts purchased respectively are correct.
2) Check if the indoors and outdoors can be combined as the following.
Outdoor Indoor
Model Combination type Indoor qty Total indoor capacity (100w)
AU04 Single 1~8 63-164
AU05 Single 1~10 70-182
AU06 Single 1~13 78-201

Notice:
Total capacities of indoor units being used ≤ 100% of rated capacities of outdoor unit.
Indoor capacity (100W)
22
28 Total indoor capacity (100W) Branch pipe (optional)
36
40
45 less than 335 FQG-B335A
56
71

(2) Installation place selection

Air-conditioner can't be installed in The unit should be installed at the The unit should be installed at
the place with inflammable gas. Or it place with good ventilation. No the strong enough place. Or it will
will cause fire hazard. obstacle at the air inlet/outlet. And cause vibration and noise.
no strong wind blows the unit.

The installation space refers to the

latter info.

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 The unit should be installed at the •  The place where the water can flow •  The unit is better not be installed
place where the cold/hot air or fluently. at the below places, or it will cause
noise will not interfere the neighbours. •  The place where no other heat damage.
source will affect the unit. •  The place where there is corrosive
•  Pay attention to the snow against gas (spa area etc).
clogging the outdoor. •  The place blowing salty air (seaside
•  In installation, install the anti- etc).
vibration rubber between the unit •  Exists the strong coal smoke.
and the bracket. •  The place with high humidity.
•  The place where there is device
emitting Hertzian waves.
•  The place where voltage changes
greatly.

Note:
1. In snowy area, install the unit under the bracket or the snow-proof cover against the accumulative snow on the
unit.
2. Do not install the unit at the place where the flammable gas will leak.
3. Install the unit at the strong enough place.
4. Install the unit at the flat place.
5. When being installed at the place with strong wind, set the air outlet of the unit and the wind direction vertical.
Also fix the unit with the screw.
6. When opening the electric box cover for maintenance, please fix the cover with screw firmly.
(3) Transportation

•  In transportation, please don't dismantle the packaging, and move the unit to the installation location as closely
•  as possible.
•  If the packaging must be dismantled, hang up the unit with rope against damage.
•  Don't hang the unit only at two points. When hanging the unit, don't sit on the unit. The unit should be upright.
•  When removing the unit with the forklift, put the fork into the special hole at bottom of the unit.
•  When being hanged, the rope should be 4 pieces of steel cable with over 6mm diameter.
•  Put the cushion at the contact section between steel cable and the unit against the distortion or damage.

A. Refrigerant pipe connection

When fastening and loosing the nut,
Pipe connection method: operate with double spanners, because
only one spanner cannot execute firmly.
•  To ensure the efficiency, the pipe should be as short as possible.
•  Daub the refrigerant oil on the connector and the flare nut. Spanner
•  When bending the pipe, the bending semi-diameter should be as large Connector
as possible against the pipe being broken or bent.
•  When connecting the pipe, aim at the center to thread the nut by hand Nut
and tighten it with the double spanners. Spanner
•  Don't let the impurity such as sand, water etc into the pipe.
If threading the nut as not aiming at
the center, the screw thread will be
damaged, further it will cause leakage.
Cautions in piping installation:
•  When welding the connector with hard solder, charge nitrogen into the pipe against oxidation. Or the oxygen film
in the pipe will clog the capillary and the expansion valve, even cause the deathly accident.
•  The refrigerant pipe should be clean. If the water and the other impurity enter the pipe, charge the nitrogen to
clean the pipe. The nitrogen should flow under the pressure of about 0.5Mpa and when charging the nitrogen,
stop up the end of the pipe by hand to enhance the pressure in the pipe, then loose the hand (meanwhile stop up
the other end).
•  The piping installation should be executed after the stop valves are closed.
•  Before welding the valve and the pipes, use the wet cloth to cool down the valve and the pipes.
•  When the connection pipe and the branch pipe need to be cut down, please use the special shears and cannot
use the saw.

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 Pipe material and specs selection
1. Please select the refrigerant pipe of the below material.
Material: the phosphoric oxidize seamless copper pipe, model: C1220T-1/2H (diameter is over 19.05); C1220T-0
(diameter is below 15.88).
2. Thickness and specs:
Confirm the pipe thickness and specs according to the pipe selection method (the unit is with R410A, if the pipe
over 19.05 is 0-type, the pressure preservation will be bad, thus it must be 1/2H type and over the min. thickness.
3. The branch pipe must be from Haier.
4. When installing the stop valve, refer to the relative operation instruction.
5. The pipe installation should be in the allowable range.
6. The installation of branch pipe and gather pipe should be performed according to the relative manual.

Precautions on installation

NOTICE
If drain holes of the outdoor unit are covered by a mounting base or by floor surface,
raise the unit in order to provide a free space of more than 5in.(130mm) under the
outdoor unit.
Foundation work
•  Check the strength and level of the installation ground so that the unit will not cause
any operating vibration or noise after installation.
•  In accordance with the foundation drawing in the figure, fix the unit securely by means
of the foundation bolts.
•  It is best to screw in the foundation bolts until their length are 0.8in.(20mm) from the
foundation surface.

˃5in.(130mm)
20

•  Fix the outdoor unit to the foundation bolts using nuts with resin washers(1) as shown in the figure.

If the coating on the fastening area is stripped off, the nuts rust easily.
Dimensions (bottom view)(unit of measurement: mm)

A leg pitch1
B leg pitch2
C Front grill (air outlet side)
D Drain hole
E Bottom frame
F Knock-out hole (for piping line)

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 Selection of installation location of outdoor
(1) Single-unit installation (unit: in.(mm))

The top and two side surfaces must be exposed to open space, and barriers on at least one side of the front and
back shall be lower than the outdoor unit.

(2) Multi-unit installation (unit: in.(mm))

(3) Multi-unit installation in front and back (unit: in.(mm))

The top and two side surfaces must be exposed to open space, and barriers on at least one side of the front and
back shall be lower than the outdoor unit.
•  The installation service spaces shown in the illustrations are based on an air intake temperature of 95°F(35°C)(DB)
for COOL operation. In regions where the air intake temperature regularly exceeds 95°F(35°C)(DB), or if the heat
load of outdoor units is expected to regularly exceed the maximum operating capacity, reserve a larger space
than that indicated at the air intake side of units.
•  Regarding the required air outlet space, position the units with consideration to the space required for the onsite
refrigerant piping work as well. Consult your dealer if the work conditions do not match those in the drawings.

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 Drain pipe disposal
•  Make sure the drain works properly.
•  In regions where buildups of snow can be expected, the accumulation and freezing of snow in the space between
the heat exchanger and external plate may lower operating efficiency.
•  After punching the knock-out hole, the application of repair-type paint on the surface around the edge sections is
recommended to prevent rust.
Pipe specification:

b c
a a
b

a a

1. Pipe "a" diameter (between indoor and branch pipe) (depends on indoor pipe)

1. Pipe a (indoor-branch pipe) diameter: decided by connected indoor capacity

Indoor rated capacity

Gas pipe Liquid pipe Note
(x100w)
22~28 9.52 6.35
36~56 12.7 6.35 AS07/092MGERA gas pipe should be 12.7
71~140 15.88 9.52
226~300 25.4 9.52 AS182MGERA gas / liquid pipe should be 15.88 / 9.52
450~600 28.58 12.7
(1) When pipe length between indoor & nearest branch pipe ≥15m, adjust in accordance with following criteria:
① If indoor rated capacity≤5.6kW, change gas / liquid pipe diameter to 15.88 / 9.52
② If 16.8kW≥ indoor rated capacity>5.6kW, change gas / liquid pipe diameter to 19.05 / 9.52
③ If indoor rated capacity>16.8kW, change liquid pipe diameter to 12.7

2. Pipe "b" diameter (between branch pipes)

Total indoor capacity after the branch pipe (x100W) Gas pipe (mm) Liquid pipe (mm)
X<112 Ø15.88 Ø9.52
112≤X< 234 Ø19.05 Ø9.52
3. Pipe "c" diameter ( outdoor pipe diameter)
Standard pipe diameter Enlarged pipe diameter
Outdoor model
Gas pipe (mm) Liquid pipe (mm) Gas pipe (mm) Liquid pipe (mm)
AU04 Ø15.88 Ø9.52 Ø19.05 Ø12.7
AU05 Ø15.88 Ø9.52 Ø19.05 Ø12.7
AU06 Ø15.88 Ø9.52 Ø19.05 Ø12.7

Note:
1.When the distance from outdoor to the longest indoor is over 30m, the main pipe should be the enlarged
diameter.
2. If pipe b diameter is larger than main pipe c, enlarge main pipe c diameter to be the same as pipe b.

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 Copper pipe selection:
hardness Softness Half-hardness
Outer diameter (mm) Ø6.35 Ø9.52 Ø12.7 Ø15.88 Ø19.05 Ø22.22 Ø25.24 Ø28.58
Min. thickness (mm) 0.8 0.8 1.0 1.0 1.0 1.1 1.2 1.4
Note: If the copper pipe with outer diameter 19.05 is coil pipe, the thickness should be over 1.1.

Long pipe and high drop

1. Allowable pipe length and height difference

Outdoor unit
Drop height between indoor and outdoor units

First branch piping

Indoor unit

Length of the longest piping L

Drop height between

indoor units
Length of the longest piping after the
first branch piping L h≤10m

Maximal length and drop height permissible of refrigerant piping

Permissible
Piping part
value
Total length of piping (actual length) 300m L1+L2+L3+L4+a+b+c+d+e
Piping Longest piping L Actual length 150m L1+L2+L3+L4+e
length Piping length of indoor unit which is furthest to the first branch
40m L2+L3+L4+e
piping L (*)
Drop height between indoor and outdoor unit Up outdoor 50m ——
Drop H Under outdoor 40m ——
height
Drop height between indoor units h 15m ——

Unit pipe spec and connection method (unit: mm)

A. Outdoor unit
Gas pipe side Liquid pipe side
Model
Diameter (mm) Connecting method Diameter (mm) Connecting method
AU04 Ø15.88 Ø9.52
AU05 Ø15.88 Flared joint Ø9.52 Flared joint
AU06 Ø15.88 Ø9.52

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 B. Indoor unit
Please refer to the indoor air conditioner manual.
Connecting method: Flared joint

C. Pipe spec and the torque

Diameter (mm) Thickness (mm) Torque (N.m)
Ø6.35 0.8 16~20
Ø9.52 0.8
40~50
Ø12.7 1.0
Ø15.88 1.0 90~120
Ø19.05 1.0 100~140
Ø22.22 1.1 ——
Ø25.4 1.2 ——
Not less than Ø28.58 More than 1.4 ——
Note: If the copper pipe with outer diameter 19.05 is coil pipe, the thickness should be over 1.1.

Branch pipe
Outdoor unit type
Branch pipe selection:
Total indoor capacity (100W) Model (optional)
Less than 335 FQG-B335A
Note:
1. When connecting the pipe and the outdoor, please pay attention to the outdoor pipe dimension.
2. When adjusting the diameter among pipes and among the units, please must execute at the branch pipe side.
3. When welding with hard solder, please must blow nitrogen. If not, a number of oxide will be produced and cause
heavy damage. Besides, to prevent water and dust into the pipe, please make the brim as outer roll.

Adhesive side Seal the connection and wrap the

heat insulator with adhesive tape
Prepare on field

Cut off pipe with the cutter

Cut off at the middle

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 Pipe installation
When doing the piping connection, please do the following:
•  Please don't let the pipe and the parts in the unit collide each other.
•  When connecting the pipes, close the valves fully.
•  Protect the pipe end against and water, impurities (welding after being flatted, or being sealed with adhesive
tape).
•  Bend the pipe as large semi-diameter as possible (over 4 times of the pipe diameter).
•  The connection between outdoor liquid pipe and the distributing pipe is flared type. Please expand the pipe with
the special tool for R410A after installing the expanding nut. But if the projecting pipe length has been adjusted
with the copper pipe gauge, you can use the original tool to expand the pipe.
•  Since the unit is with R410A, the expanding oil is ester oil, not the mineral oil.
•  When doing the flare connection, please do the following: When connecting the expanding pipe, fasten the pipes
with double-spanner. The torque refers to the former info.
Projecting length of pipe to be expanded: B(mm)
Expanding pipe: A(mm)
Pipe outer When it is hard pipe
Pipe outer diameter diameter
A Special tool The former
(mm) (mm) for R410A tool
Ø6.35 9.1
Ø6.35
Ø9.52 13.2
Ø9.52
Ø12.7 16.6 0-0.5 1.0-1.5
Ø12.7
Ø15.88 19.7
Ø15.88
•  The outdoor gas pipe and the refrigerant distributing pipe, as well the refrigerant distributing pipe and the branch
pipe should be welded with hard solder.
•  Weld the pipe at the same time charge the nitrogen. Or it will cause a number of impurity (a film of oxidation) to
clog the capillary and the expansion valve, further cause the deadly failure.
Seal the pipe end with adhesive tape or the stopper to
increase the resistance, fill up the pipe with nitrogen.

Taping <N2>

Only nitrogen gas Brazing

can be used
•  Protect the pipe end against the water, impurity into the pipes (welding after being flat, or being sealed with
adhesive tape).
Flat

Brazing Adhesive tape

•  The refrigerant pipe should be clean. The nitrogen should flow under the pressure of about 0.2Mpa and when
charging the nitrogen, stop up the end of the pipe by hand to enhance the pressure in the pipe, then loose the
hand (meanwhile stop up the other end). 1st side 2nd side
Source valve
0.2MPa
Hand

•  When connecting the pipes, close the valves fully.

•  When welding the valve and the pipes, use the wet cloth to cool down the valve and the pipes.

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 B. Leakage test
1. The outdoor unit has been executed the leakage test in the factory. After connecting the distributing pipe, execute
the leakage test from the outdoor check valve and the indoor. Besides, while testing, the valves should be close.
2. Refer to the below figure to charge the nitrogen into the unit to take a test. Never use the chlorine, oxygen,
flammable gas in the leakage test. Apply pressure both on the gas pipe and the liquid pipe.
3. Apply the pressure step by step to the target pressure.
a. Apply the pressure to 0.5MPa for more than 5 minutes, confirm if pressure goes down.
b. Apply the pressure to 1.5MPa for more than 5 minutes, confirm if pressure goes down.
c. Apply the pressure to the target pressure (4.0MPa), record the temp. and the pressure.
d. Leave it at 4.0MPa for over 1 day, if pressure does not go down, the test is passed. Meanwhile, when the
temp. changes for 1degree, pressure will change 0.01MPa as well. Correct the pressure.
e. After confirmation of a~d, if pressure goes down, there is leakage. Check the brazing position, flared position
by laying on the soap. modify the leakage point and take another leakage test.
4. After leakage test, must execute the evacuation.
Check valve

To indoor Gas pipe

Gauge manifold Gas pipe

Lo Hi
Nitrogen Lo handle Hi handle Check hole

Outdoor

C. Evacuation
Evacuate at the check valve of liquid stop valve and both sides of the gas stop valve.
Operation procedure:
Leakage test passed

Charge refrigerant
Evacuation begins

Evacuation ends

Check vacuum

After reaching -101KPa or Leave it for over 1

less (below -755mmHg), let hour, vacuum pointer
the vacuum pump running does not arise.
continuously for over 1hour.

If vacuum pointer arises, it shows there is water or leakage in the

system, please check and modify it, and then evacuate again.
Because the unit is with refrigerant R410A, the below issues should be paid attention:
•  To prevent the different oil into the pipe, please use the special tool for R410A, especially for gauge manifold and
charging hose.
•  To prevent the compressor oil into the refrigerant cycle, please use the anti-counter-flow adapter.

D. Check valve operation

Open/close method:
•  Take down the valve cap.
•  Turn the liquid stop valve and the gas stop valve with hexangular spanner until it stops. If opening the valve
strongly, the valve will be damaged.
•  Tighten the valve cap.

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 Tighten torque as the table below:
Tighten torque N.m
Shaft (valve body) Cap (cover) T-shape nut (check joint)
For gas pipe Less than 7 Less than 30 13
For liquid pipe 7.85 (MAX15.7) 29.4 (MAX39.2) 8.8 (MAX14.7)

E. Additional refrigerant charging

Charge the additional refrigerant as liquid state with the gauge.
If the additional refrigerant can not be charged totally when the outdoor stops, charge it at the trial mode.
If the unit runs for a long period in the state of lack of refrigerant, compressor will occur failure.
(the charging must be finished within 30 minutes especially when the unit is running, meanwhile charging the
refrigerant).
A. Charging amount when out of factory excludes the refrigerant in the pipe.
B. The unit only is charged the standard volume of refrigerant (distributing pipe length is 0m).
Additional charging amount=actual length of liquid pipe x additional amount per meter liquid pipe
Additional charging amount=L1×0.35+L2×0.25+L3×0.17+L4×0.11+L5×0.054+L6×0.022
L1: total length of 22.22 liquid pipe
L2: total length of 19.05 liquid pipe
L3: total length of 15.88 liquid pipe
L4: total length of 12.7 liquid pipe
L5: total length of 9.52 liquid pipe
L6:total length of 6.35 liquid pipe
C. Refrigerant charging and additional charging
Additional refrigerant charging per meter(kg/m)
Charge when out of factory
Ø22.22 Ø19.05 Ø15.88 Ø12.7 Ø9.52 Ø6.35
0.35 0.25 0.17 0.11 0.054 0.022 Refer to label

Note:
•  To prevent the different oil into the pipe, please use the special tool for R410A, especially for gauge manifold and
charging hose.
•  Mark the refrigerant type in different colour on the tank. R410A is pink.
•  Must not use the charging cylinder, because the R410A will change when transferring to the cylinder.
•  When charging refrigerant, the refrigerant should be taken out from the tank as liquid state.
•  Mark the counted refrigerant volume due to the distributing pipe length on the label.

GWP: 2088
The product contains fluorinated greenhouse gases and its functioning relies upon such gases.

Heat insulation Connection wire

•  Gas pipe and liquid pipe should be heat insulated separately.
•  The material for gas pipe should endure the high
temperature over 120°C.That for liquid pipe should be over over 20cm
70°C.
•  The material thickness should be over 10mm, when ambient Adhesive tape
temp. is 30°C, and the relative humidity is over 80%, the
material thickness should be over 15mm. Gas pipe
•  He material should cling the pipe closely without gap, then Liquid pipe
be wrapped with adhesive tape. The connection wire can not Heat insulator
be put together with the heat insulation material and should
be far at least 20cm.
Fix the refrigerant pipe
•  In operation, the pipe will vibrate and expand or shrink. If not being fixed, the refrigerant will focus on one part to
cause the broken pipe.
•  To prevent the central stress, fix the pipe for every 2-3m.

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 9.3 Trial operation and the performance

5-minute delay function

•  If starting up the unit after being powered off, the compressor will run about 5 minutes later against being
damaged.
Cooling/heating operation
•  Indoor units can be controlled individually, but cannot run in cool and heat mode at the same time. If the cool
mode and the heat mode are existing simultaneously, the unit set latter will be standby, and the unit set earlier will
run normally. If the A/C manager sets the unit at cooling or heating mode fixedly, the unit can not run at the other
modes.
Heating mode characteristic
•  In operation if outdoor temp. arises, indoor fan motor will turn to low speed or stop.
Defrosting in heating mode
•  In heating mode, outdoor defrosting will affect the heating efficiency. The unit will defrost for about 2~10 minutes
automatically, at this time, the condensate will flow from outdoor, also in defrosting, the vapour will appear at
outdoor, which is normal. Indoor motor will run at low speed or stop, and outdoor motor will stop.
The unit operation condition
•  To use the unit properly, please operate the unit under the allowed condition range. If operating beyond the range,
the protection device will act.
•  The relative humidity should be lower than 80%. If the unit runs at the humidity over 80% for a long period, the
dew on the unit will drop down and the vapour will be blowed from air outlet.
Protection device (such as high pressure switch)
•  High pressure switch is the device which can stop the unit automatically when the unit runs abnormally.
When the high pressure switch acts, the cooling/heating mode will stop but the running LED on wired controller
will be light still. The wired controller will display failure code.
When the following cases occur, the protection device will act:
In cooling mode, air outlet and air inlet of outdoor are clogged.
In heating mode, indoor filter is sticked with duct; indoor air outlet is clogged.
When protection device acts, please cut off the power source and re-start up after eliminating the trouble.
When power failure
•  When power is failure in running, all the operations will stop.
•  After being electrified again, if with re-start up function, the unit can resume to the state before power off
automatically; if without re-start up function, the unit needs to be switched on again.
•  When abnormal occurs in running because of the thunder, the lightning, the interference of car or radio, etc,
please cut off the power source, after eliminating the failure, press "ON/OFF" button to start up the unit.
Heating capacity
•  The heating mode adopts the heat pump type that absorbs outdoor heat energy and releases into indoor. So if
outdoor temperature goes down, the heating capacity will decrease.
System marks
•  On the condition that multi Outdoor systems are installed, in order to confirm the relationship between outdoor
and indoor, please make marks on outdoor electric control box cover to indicate the connected indoor unit. As the
below figure:

Indoor model:

Room No.
e.g. Indoor A, system 1, Floor 2 2F-1A

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 Trial operation
•  Before trial operation:
Before being electrified, measure the resistor between power terminal block (live wire and neutral wire) and the
earthed point with a multimeter, and check if it is over 1MΩ. If not, the unit can not operate.
To protect compressor, electrify the outdoor unit for at least 12 hours before the unit runs. If the crankcase heater
is not electrified for 6 hours, the compressor will not work.
Confirm the compressor bottom getting hot.
Except for the condition that there is only one master unit connected (no slave unit), under the other conditions,
open fully the outdoor operating valves (gas side, liquid side). If operating the unit without opening the valves,
compressor failure will occur.
Confirm all indoor units being electrified. If not, water leakage will occur.
Measure the system pressure with pressure gauge, at the same time, operate the unit.
•  Trial operation
In trial operation, refer to the information of performance section. When the unit can not start up at the room
temperature, make trial operation for outdoor.

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 10. Outdoor Wiring Installation
Communication wiring figure

Communication wire with polarity

Outdoor Indoor 1 Indoor 2

PQ PQAB C PQAB C

A BC wired
controller

Indoor 3 Indoor 4 Indoor 5 Indoor 6

PQAB C PQAB C PQAB C PQAB C

A B C wired A B C wired A B C wired

controller controller controller
ABC ABC

wired wired
controller controller
The outdoor and all indoor units are in parallel through 2 non-polar wires.
Three wiring methods between wired controller and indoor unit:
A. 1 to multi (group control): one wired controller controls 2~16 indoors, as shown in above figure, indoor 1~indoor
2: indoor 2 is wired control master unit, the others are wired control slave units. Wired controller and the master
indoor (directly connected to wired controller) is connected by 3 polar wires; the other indoors and the master
indoors are connected by 2 polar wires.
B. 1 to 1 (one wired controller controls one indoor): as shown in above figure, indoor 3~ indoor 4, indoor and wired
controller are connected by 3 polar wires.
C. 2 to 1 (two wired controller controls one indoor): as shown in above figure, indoor 6. Either of wired controllers
can be set as master wired controller, and the other is slave wired controller. Master/slave wired controller, and
master/indoor are connected by 3 polar wires.
When indoor is controlled by remote controller, refer to the "wired control master unit/wired control slave unit/
remote control unit table". A, B, C on signal terminal block need not wires and not connect the wired controller.
Power wiring figure

Outdoor Outdoor
AU04~06IFPERA AU04~062FPERA

Power source: 3N~, 380-400V, 50/60Hz Power source: 1PH, 220-230V~, 50/60Hz

Indoor 1 Indoor 2 Indoor 3

(wall mounted unit) (wall mounted unit) (non wall mounted unit)

Power source: 1PH, 220-230V~, 50/60Hz Power source: 1PH, 220-230V~, 50/60Hz Power source: 1PH, 220-230V~, 50/60Hz

Indoor and outdoor use their individual power source. All indoors use one power source. Must install the leakage
breaker and the over current breaker, or electric shock will occur.

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 Outdoor power source and power cable

Item Ground wire

Rated current of residual
Power cable Circuit
Power circuit breaker (A)
section breaker
source 2 Ground fault interruptor (mA) Section Screw
(mm ) (A) (mm2)
response time (S)
Model
AU042FPERA 1PH, 10 50 50A 30mA below 0.1S 10 M5
Individual power

AU052FPERA 220-230V~, 10 50 50A 30mA below 0.1S 10 M5

AU062FPERA 50/60Hz 10 50 50A 30mA below 0.1S 10 M5
AU04IFPERA 3N~, 4 20 20A 30mA below 0.1S 4 M5
AU05IFPERA 380-400V, 4 20 20A 30mA below 0.1S 4 M5
AU06IFPERA 50/60Hz 4 20 20A 30mA below 0.1S 4 M5
•  Power cable must be fixed firmly.
•  Each outdoor must be earthed well.
•  When power cable exceeds the range, thicken it appropriately.

Indoor power source and communication wiring

Item Communication wire section

Power Rated current Rated current of residual
Wire
cable of overcurrent circuit breaker(A)
Indoor length
section breaker Ground fault interruptor(mA) Outdoor/indoor Indoor/indoor
total (m) (mm 2
) (mm2)
(mm2) (A) response time(S)
current (A)
<10 2 23 20 20A, 30mA, below 0.1s
≥10 and <15 3.5 24 30 30A, 30mA, below 0.1s 2-core × (0.75-2.0mm2)
≥15 and <22 5.5 27 40 40A, 30mA, below 0.1s shielded wire
≥22 and <27 10 42 50 50A, 30mA, below 0.1s
•  Power cable and communication wire must be fixed firmly.
•  Each indoor must be grounded well.
•  When power cable exceeds the range, increase the gauge appropriately.
•  Shielded layer of communication wires must be connected together and be earthed at single
point.
•  The total length of communication wire cannot exceed 1000m.

Communication wire for wired controller

Wire length(m) Wire spec Wire length(m) Wire spec

2 2
<100 0.3mm ×(3-core) shielded wire ≥300 and <400 1.25mm ×(3-core) shielded wire
≥100 and <200 0.5mm2 ×(3-core) shielded wire ≥400 and <600 2mm2 ×(3-core) shielded wire
≥200 and <300 0.75mm2 ×(3-core) shielded wire
•  Shielded layer of communication wire must be grounded at one end.
•  The total length cannot exceed 600m.

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 11. Outdoor Unit PCB

0151800146J

LED1

LED3

LED2

LED4 BM1 BM2

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 12. Dip Switch Setting

(1) BM1 introduction

BM1 Definition Introduction

Indoor searching after OFF Begin to search indoor

BM1_1 startup ON Stop searching indoor and lock the quantity
OFF Invalid
BM1_2 Two classes supercooling
ON Valid (default)
OFF AC motor
BM1_3 Fan motor selection
ON DC motor (default)
Energy saving or OFF Energy saving priority
BM1_4 refrigeration effect priority ON Refrigeration effect priority (default)
Indoor simultaneous OFF Invalid (default)
BM1_5 control ON Valid
Defrosting condition OFF Not easy to frost area (default)
BM1_6 selection ON Easy to frost area
OFF Ordinary (default)
BM1_7 Defrosting level
ON Strengthen (increase the defrosting time)
OFF Quiet running function is unavailable (default)
BM1_8 Quiet running function
ON Quiet running function is available

Note:
Either the indoor unit quantity unlocked or the locked quantity is different with actual connecting number,
the unit cannot running.

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 BM2 Definition Introduction
Cooling only or heat pump OFF Heat pump (default)
BM2-1 selection ON Cooling only
BM2_2 ON OFF OFF AU04
BM2_3 Outdoor model selection ON OFF ON AU05
BM2_4 ON ON OFF AU06
OFF Single phase
BM2-5 Power supply selection
ON 3-phase
OFF New communication protocol (default)
BM2-6 Communication protocol selection
ON Old communication protocol
BM2-7 BM2-8 Start mode selection
OFF OFF First open priority
OFF ON After opening priority
Cooling priority, any one indoor unit
ON OFF runs in cooling mode, the outdoor unit
BM2-7 will run in cooling mode, the indoor
BM2-8 Start mode selection units running in heating mode will stop

Cooling priority, any one indoor unit

ON ON runs in cooling mode, the outdoor unit
will run in cooling mode, the indoor
units running in heating mode will stop.

Note: communication protocol between indoor and outdoor units

The new communication protocol is faster than the old communication and its control content is more than the old one.
The indoor PCB 0151800113, 0151800161, 0151800161B, 0151800227, 0151800244, 0010451751AF, 0151800141A,
0010451751AE and 151800141 are new communication protocol.
The indoor PCB 151800086 and 0010451181A are old communication protocol.
Old communication protocol indoor PCB can't connect with new communication protocol outdoor, so if this outdoor unit connect
with old communication protocol indoor, need set the dip switch BM2-6 to ON position.

2. bridge instruction
CJ1:
Short it before power ON-- PCB check its function (used for factory production. Short it after power ON-- time short
function, 60 seconds become to 1 second.
CJ2: Reserved

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 13. Monitor Tools

Main function instruction:

By setting the rotary switch, the digital tube will display the
outdoor and indoor unit parameters (the outdoor current,
discharge temp., suction temp., defrosting temp., coil temp.
and outdoor ambient temp.; indoor unit coil temp. and
valve open angle and so on), the data is inform of decimal
integer. During the process of installation, adjustion and
maintenance, the whole system’s operating parameters
can be tested conveniently which can help to check and
solve problems quickly and correctly.

SW01 SW02 Digital tube display

Display outdoor failure code (when unlock the indoor quantity and the system is running
0
normally, display indoor quantity, outdoor horse power and type of power supply circularly)
1 Display outdoor operation mode (stop: OFF, cooling: CCC, heating: HHH)
2 Program version (one decimal)
3 E2 version
Target frequency of compressor, (press "start" for 5s to enter the manual frequency control,
4 "Up / Down" can adjust the frequency, press "stop" for 5s to quit. Manual control, the
frequency flashing display, otherwise display normally.)
5 Actual frequency of compressor
6 Indoor quantity
7 Running indoor quantity
8 Outdoor unit horse power
0
9 Outdoor fan 1 speed (unit: rpm, max. display: 999)
A Outdoor fan 2 speed (unit: rpm, max. display: 999)
B Target average temp. of indoor Tc2 (unit: ℃）
C Actual average temp. of indoor Tc2 (unit: ℃）
D Target degree of superheat of PMV in heating (unit: ℃）
Outdoor special operation condition
The first position: power supply type (0-1Ph; 1- 3Ph)
E
The second position: quiet (0-OFF; 1-ON)
The third position: gettering operation (0-OFF; 1-ON)
Forced fan motor running, (press "start" for 5s to enter the manual fan motor control, "Up
F / Down" can adjust fan speed, press "stop" for 5s to quit) forced: flashing display "0-15",
otherwise display "FAN". The outdoor failure can't affect this function.

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 SW01 SW02 Digital tube display
0 Td discharging temperature (unit: ℃）
1 Ta outdoor ambient temperature (unit: ℃）
2 Ts suction temperature (unit: ℃）
3 Te defrosting temperature (unit: ℃）
4 Toil oil temperature (unit: ℃）
5 Pd high pressure (unit: kg, one decimal)
6 Ps low pressure (unit: kg, one decimal)
Outdoor PMV valve open angle (unit: pls, max. display: 999)
7 (Press start for 5s to enter forced mode, all the indoor units' PMV are full open, flashing
display "480" and press stop for 5s to quit and display outdoor PMV valve open angle)
Valve state
The first position: 4WV (0-OFF; 1-ON)
8
1 The second position: SV1 (0-OFF; 1-ON)
The third position: SV2 (0-OFF; 1-ON)
The first position: high pressure switch (0-OFF; 1-ON)
9 The second position: low pressure switch (0-OFF; 1-ON)
The third position: heater (0-OFF; 1-ON)
A Tfin module temperature (unit: ℃）
B Compressor current (unit: A, one decimal)
C Te defrosting temperature (unit: ℃）
D DC voltage of module (unit: V）
Outdoor CT current (unit: A, one decimal)
E Forced cooling alternate display ”CCC”, (Press start for 5s, all the indoor units are in cooling
state, and press stop for 5s to quit)
Forced heating (Press start for 5s, all the indoor units are in heating state, and press stop for
F
5s to quit) display “ HHH”, otherwise “---”
2 0-F If the communication is normal display indoor program version (one decimal) ,otherwise “---”
3 0-F Indoor type (0,4,5,6,7 ordinary indoor unit; 1-high wall; 2-fresh air; 3-heat recovery)
4 0-F Display indoor failure code, if no failure display “---”
5 0-F Indoor horse power (one decimal)
The first and second position: indoor unit current operation mode (00-OFF, 01-Fan,
6 0-F 02-Cooling, 03-Dehumidify, 04-Heating)
The third position: outdoor unit capacity demand (0-no ; 1-yes)
7 0-F Indoor PMV valve open angle (unit: pls, max. display: 999)
Indoor unit
The first position: float switch (0-OFF; 1-ON)
8 0-F
The second position: pump (0-OFF; 1-ON)
The third position: heater (0-OFF; 1-ON)
9 0-F Indoor Ta ambient temperature (unit: ℃）
A 0-F Indoor TC1 gas temperature (unit: ℃）
B 0-F Indoor TC2 liquid temperature (unit: ℃）

C 0-F Indoor units: fan speed of indoor units(0-OFF, 1-Low, 2-med, 3-high)
Forced cooling (press "start" for 5s for cooling operation of indoor units and press "stop" for
E 0-F
5s to quit) display ”CCC”, otherwise “---“
Forced heating (press "start" for 5s for heating operation of indoor units and press "stop" for
F 0-F
5s to quit) display ”HHH”, otherwise “---“

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 14. Outdoor Unit Control

1. Compressor startup control

After receiving the outdoor startup instruction, outdoor open SV1 30 seconds and then standby. When startup, the
compressor will keep for 3 min at 45rps (when Ta<40°C) or 3 min at 40rps (when Ta>=40°C). In cooling mode, meet
running 1min & (Td-CT)≥20°C or Ps≤0.1MPa (or max. running time is 3min),quite the startup control;
In heating mode, meet running 1min and & (Td-CT)≥20°C or Ps≤0.1MPa (or max. running time is 3min), quite the
startup control;
During startup, the high pressure protection, high exhaust protection and current protection is priority and the low
exhaust up frequency protection is shielded.

2. Compressor output control

Compressor Pd/Ps control, control the compressor frequency to output appropriate cooling/heating capacity.
The control at the end of the startup control.

2.1 In cooling mode:

According to the ambient temperature select target Ps automatically
Mode Effect priority mode Energy-saving mode Outdoor ambient Ps correction
(default) temperature during running
Target Ps Setting value -R°C Setting value -R°C Ta≤12°C During running:
Target Ps (set by dip 0 2 12°C<Ta<40°C correct the Ps
switch) according to the
Target Ps Setting value +2°C Setting value +2°C Ta≥40°C compression ratio

R value setting: Ta<-5°C, Target Ps: setting value -8°C

-5°C≤Ta<12°C, Target Ps is the slope value of setting value and (setting value -8°C)

2.2 In heating mode:

According to the piping length to select target Pd and also according to the ambient temperature select target Pd
automatically

Mode Effect priority mode Energy-saving mode Outdoor ambient Pd correction during
(default) temperature running
Target Pd Setting value +3°C Setting value +3°C Ta≥15°C
Target Pd Setting value +2°C Setting value +2°C Ta≥7°C During running:
correct the Pd
Target Pd 48 46 Ta≥-5°C according to the
(set by dip switch) compression ratio
Target Pd Setting value -2°C Setting value -2°C Ta<-5°C

3. Outdoor fan motor control

3.1 In cooling mode:
Outdoor fan motor running control during cooling mode is in high COP and 100% RPM running as much as
possible.
Outdoor fan control in the operation of the refrigeration in the relation between high COP operation principle is to
100% as much as possible the RPM.
Pd is the main control standard.

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 Pd(MPa)
《A area》Pd<1.0 MPa, drop step by step
at the lowest fan speed (fan speed No.1 ) running 1 min , OFF
1.0

《B area》1.0MPa≤Pd<1.5 MPa
Reduce the speed per 1 class /20s until to the lowest
1.5

《C area》1.5MPa≤Pd<2.2 MPa
Keep the current fan speed
2.2

《D area》2.2MPa≤Pd<3.2MPa
Increase the speed per 1 class/20s
3.2
《E area》Pd≥3.2 MPa
Reach the highest speed from the D area speed immediately

When startup the fan motor speed refer to the following:

• Ta≥35°C: highest speed
• 25°C≤Ta<35°C: 6 speed
• 15°C≤Ta<25°C: 3 speed
• Ta<15°C: OFF

3.2 In heating mode

Pd(MPa)

《A area》Pd>3.8MPa, OFF immediately

3.8

《B area》3.5MPa<Pd≤3.8 MPa
Reduce the speed per 1 class /20s until to the lowest
3.5

《C area》3.0MPa<Pd ≤ 3.5MPa
Keep the current fan speed
3.0

《D area》2.4MPa<Pd ≤ 3.0MPa
Increase the speed per 1 class/20s
2.4
《E area》Pd≤2.4 MPa
Reach the highest speed from the D area speed immediately

All the heating start, after the 4-way valve reversing (including defrosting, oil return and 4-way valve is electrified)
the fan motor speed refer to the following:
• Ta≤15°C: highest speed
• 15°C<Ta≤20°C: 3 speed
• Ta>20°C: 1 speed

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 4. Defrosting control

In order to have the effect heating operation, need defrosting control.

4.1 Entering condition:

•  & Ta≤20°C
After heating startup 60min
•  OR Last defrosting~ heating cumulative operation time is more than 60 minutes
•  OR A: Ta≥6°C, Te≤-10°C For 5min continuously
B: -15≤Ta<6°C, Te≤(5Ta-72)/7 For 5min continuously
C: -23≤Ta<-15°C, Te≤(Ta-69)/4 For 5min continuously
D: Tao<-23°C, Te≤-23°C For 5min continuously
X: During the oil return operation meets the following condition, the
cumulative operation time reset
Outdoor Te≥10°C, for 1min continuously
OR
Outdoor Te≥15°C, for 10min continuously

4.2 Defrosting control

During defrosting, four-way valve power off, outdoor fan stop, indoor fan stop, outdoor PMV open to 470pls.

4.3 Quit defrosting

•  OR •  After defrosting operation 10min

•  OR •  Outdoor Te≥15°C, for 1min continuously

•  Outdoor Te≥20°C, for 30s continuously

•  Outdoor Te≥30°C, for 5s continuously

•  OR •  Tc ≥ 54°C

5. Oil return control

5.1 Entering condition:
A: In cooling mode
When load rate<20%: after 2 hours
The master unit compressor cumulative •  OR
•  & operation time When load rate≥20%: after 4 hours
Load rate≤30%
•  &
After the outdoor unit startup
•  OR
Load rate ＞ 30%
•  &
Finish the outdoor startup control~ after 20min

Note: load rate=∑indoor HP(Thermo ON) / ∑indoor HP*100%

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 B: In heating mode When load rate<25%: after 1 hours, 4-way valve
doesn't reversing oil return operation

The master unit compressor cumulative •  OR 25%≤load rate<50%: after 2 hours, 4-way valve
•  & operation time doesn't reversing oil return operation
Load rate≤30%
•  & 50%≤load rate<75%: after 4 hours, 4-way valve
After the outdoor unit startup doesn't reversing oil return operation
•  OR
Load rate ＞ 30%
•  &
Finish the outdoor unit startup control~after 20min
•  &
Finish defrosting~ after 30min

Note: if load rate≥75% and the outdoor unit output rate≥75% for 10 min, oil return time reset
5.2 Oil return control
1) Oil return in cooling mode, the compressor according to the 75% of maximum frequency control, the outdoor
PMV opening angle is 470 pls, the Thermo ON indoor PMV opening angle is 250 pls, the Thermo OFF indoor PMV
opening angle is 125 pls.
2) Oil return in heating mode (4-way valve reversing), the compressor according to the 75% of maximum frequency
control, the outdoor PMV opening angle is 470 pls, the Thermo ON and Thermo OFF indoor PMV opening angle
is 125 pls. When Td > 95 °C ands TdSH > 15 °C, the indoor PMV opening angle increased 10%, max. time is 2;
When Td < 90 °C, return to the usually opening.
3) Oil return in heating mode (4-way valve doesn't reversing), the compressor according to the indoor units load
rate and current running frequency to confirm the oil return enter frequency, the maximum frequency can't exceed
75% of the maximum frequency. the PMV of the outdoor and the Thermo ON indoor unit control automatically,
Thermo OFF indoor PMV opening angle is 250 pls.

5.3 Oil return quit condition:

1) In cooling mode

After 5min
•  OR Td<CT+10°C, for 10s continuously
•  OR
•  &
Ts-ET<15°C, for 10s continuously
After 1min
2) In heating mode (4-way valve reversing)

After 5min
•  OR Td<CT+10°C, for 10s continuously
•  OR
•  &
Ts-ET<15°C, for 10s continuously
After 2min

3) In heating mode (4-way valve doesn't reversing)

After 5min
•  OR

Td≥105°C, for 5s continuously

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 15. Failure code
Inverter outdoor unit failure code
Digital tube Indication
indication on wired Failure code
Failure description Remarks
on master controller definition
unit (hex)
AD value is below 11(open circuit) or over 1012(short circuit) for
Defrosting temp. 60seconds, in cooling mode, if the sensor is abnormal, the unit
20 20-0 Resumable
sensor Te failure does not deal with it, besides, in defrosting and within 3 minutes
after defrosting, no alarm
AD value is below 11(open circuit) or over 1012(short circuit) for
Ambient temp.
21 21 60seconds, in defrosting and within 3 minutes after defrosting, no Resumable
sensor Ta failure
alarm
AD value is below 11(open circuit) or over 1012(short circuit) for
Suction temp.
22 22 60seconds, in defrosting and within 3 minutes after defrosting, no Resumable
sensor Ts failure
alarm
After compressor is running for 5 minutes, AD value is below
Discharging temp. 11(open circuit) or over 1012(short circuit) for 60seconds, in
23 23 Resumable
sensor Td failure course of startup, defrosting and within 3 minutes after defrosting,
no alarm
26 26-0 For continuous 200 cycles, can not find connected indoors
Indoor For continuous 300seconds, the searched indoor quantity is less
26-1 26-1
communication than the set quantity. Resumable
failure For continuous 300seconds, the searched indoor quantity is more
26-2 26-2
than the set quantity.
AD value is below 11(open circuit) or
High pressure over 1012(short circuit) for 30seconds,
28 28 Resumable
sensor Pd failure in defrosting and within 3 minutes after
defrosting, no alarm
AD value is below 11(open circuit) or
Low pressure over 1012(short circuit) for 30seconds,
29 1D Resumable
sensor Ps failure in defrosting and within 3 minutes after
defrosting, no alarm
Once
High pressure If disconnect for 50ms continuously, alarm. If alarm 3 times in an
30 30 confirmation,
switch HPS failure hour, confirm the failure
un-resumable
Once
33 33 EEPROM failure EEPROM failure confirmation,
un-resumable
Discharging temp. Td≥239°F(115°C) at interval of 25msec for twice continuously, and Once
34 34 too high protection over the set value, then stop and alarm; 3 minutes later, resume confirmation,
(Td) automatically. If it occurs 3 times in an hour, confirm the failure. un-resumable
After 4-way valve is electrified for 3 minutes, if the below conditions
can be met for continuous 10 seconds, that is conversing
Once
4-way valve successfully:
35 35 confirmation,
reversing failure 1. this outdoor compressor is running normally
un-resumable
2. Pd-Ps≥87PSI(0.6MPa), Otherwise, the system alarms reversing
failure.
After compressor is running (except for residual operation), if
Low pressure in cooling, Ps<0.05Mpa; in heating, Ps<0.03Mpa; in oil return, Once
39-0 39-0 sensor Ps too low Ps<0.03Mpa for continuous 5 minutes, alarm and stop. 2 minutes confirmation,
protection and 50 seconds later, resume automatically, un-resumable
if it occurs 3 times in an hour, confirm the failure.

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 Digital tube Indication
indication on wired Failure code
Failure description Remarks
on master controller definition
unit (hex)
After compressor is running, compression ratio 8. for
Once
Compression ratio continuous 5 minutes stop and alarm.2 minutes and 50
39-1 39-1 confirmation,
too high protection seconds later, resume automatically, if it occurs 3 times in an
un-resumable
hour, confirm the failure.
In normal operation, compression ratio <1.8 for continuous 5
Once
Compression ratio minutes stop and alarm.2 minutes and 1 seconds later,
39-2 39-2 confirmation,
too low protection resume automatically, if it occurs 3 times in an hour, confirm the
un-resumable
failure.
High pressure In normal operation, Pd>=4.15Mpa for continuous 50ms, alarm Once
40 40 sensor Pd too high and stop. 2 minutes and 50 seconds later, resume confirmation,
protection automatically, if it occurs 3 times in an hour, confirm the failure. un-resumable
In normal operation, if Td<CT+50°F(10 ) for continuous 5
minutes, the unit stops and alarms.2 minutes and 50 seconds
Discharging temp. later, resume automatically. If it occurs 3 times in an hour, Once
43 43 sensor Td too low confirm the failure. After fixed frequency compressor alarms, confirmation, un-
protection inverter compressor will continue to run. If fixed frequency resumable
compressor has been locked for 3 times, the unit will stop and
alarm.
Communication with
46 46 No communication within 30 seconds continuously Resumable
inverter board failure
3 times in an
CT current is too low hour, confirm
53 53 or current sensor 3 minutes after recovery failure; once
fault confirmation, un-
resumable
Cannot receive valve plate module signal in 200 continuous
Valve plate module
54 54 rounds or receive wrong data, recover automatically when Resumable
communication fault
received right data.
Communication
failure between
valve plate Communication failure between valve plate module and host
57 57 Resumable
module and host computer
computer(sending
by valve plate)
Tc1 temp sensor
of valve plate
58 58 Tc1 temp. sensor cannot connect with valve plate module Resumable
error(sending by
valve plate)
Tc2 temp sensor
of valve plate
59 59 Tc2 temp. sensor cannot connect with valve plate module Resumable
error(sending by
valve plate)
Valve plate module
60 60 error(sending by Reserved Resumable
valve plate)
Valve plate module
61 61 error(sending by Reserved Resumable
valve plate)

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 Digital tube Indication
indication on wired Failure code
Failure description Remarks
on master controller definition
unit (hex)
Valve plate
module
62 62 Reserved Resumable
error(sending by
valve plate)
Once
Valve plate dial
63 63 No valve plate module dial but the valve plate module is detected. confirmation,
setting error
un-resumable
3 times in an
hour, confirm
CT current is too
64 64 CT current exceeds specified value, 3 minutes after recovery failure; once
high
confirmation, un-
resumable
Upper DC motor Running at speed below 20rpm for 30s, or at speed of 70% lower
71-0 71-0 Once
blocked than the target for 2 minutes, 2 minutes and 50 seconds later after
confirmation, un-
Lower DC motor stop, resume automatically. It occurs 3 times in an hour, confirm
71-1 71-1 resumable
blocked the failure.
No pressure drop
In 1 minute after INV compressor starts up, Pd-Ps≤0.1MPa,then Once
between high
75 75-0 stop. 180 seconds later, resume automatically. If it occurs 3 times confirmed,
pressure and low
in an hour, confirm the failure. unresumable
pressure
Too small pressure
If Pd-Ps≤0.2MPa for 5 minutes, the outdoor unit protection stop. Once
drop between high
75-4 75-4 •  3 minutes after stopping protection, restart. If it occurs 3 times in confirmed,
pressure and low
an hour, confirm the failure. unresumable
pressure
Compressor running in cooling mode, Ps<0.2MPa for 30 minutes;
compressor running in heating mode, Tsi - ET>20;
78 78 Lack of refrigerant --
LEV will fully open for 60 minutes, the unit will output lack of
refrigerant alarm, unit will not stop.
3 times in an
IPM modular hour, confirm
81 81 temp. too high IPM modular temp.≥185°F(85°C) failure; once
protection confirmation, un-
resumable
3 times in an
hour, confirm
Compressor Compressor current exceeds specified value, 3 minutes after
82 82 failure; once
current protection recovery
confirmation, un-
resumable
Outdoor model set
83 83 Model and the number of fans do not match Un-resumable
error
3 times in an
Transient over
hour, confirm
current in IPM
108 108 Transient over current in IPM module rectifier side software failure; once
module rectifier
confirmation, un-
side software
resumable
3 times in an
hour, confirm
Current detection
109 109 Current detection circuit abnormality failure; once
circuit abnormality
confirmation, un-
resumable

43
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 Digital tube Indication
indication on wired Failure code
Failure description Remarks
on master controller definition
unit (hex)
IPM modular IPM modular over current, in short circuit, over heat, voltage too
110 110
protection (F0) low of control circuit.

Compressor out of In the course of compressor startup or running, the unit can not
111 111
control detect the rotor position, or not connecting compressor.
3 times in an
Radiator of
hour, confirm
112 112 transducer temp. too Radiator temp. too high
failure; once
high
confirmation,
113 113 Transducer overload Output current of transducer is too high un-resumable
Voltage too low of DC
114 114 Voltage of power source is too low
bus line of transducer
Voltage too high
115 115 of DC bus line of Voltage of power source is too high
transducer
Communication
abnormal between
116 116 Communication is disconnected Resumable
transducer and
control PCB
Transducer over Compressor startup fails for 5 times continuously, or compressor
117 117
current (software) is running down till stops caused by over current or over heat
Compressor startup The sensor used for current detecting of transducer is abnormal, 3 times in an
118 118
failure disconnected or incorrectly connection hour, confirm
Detecting circuit of failure; once
Current detection sensor of frequency controller is abnormal or
119 119 transducer current is confirmation,
unconnected or connected wrongly. un-resumable
abnormal
Power supply of
120 120 Power supply of transducer is broken down instantly
transducer abnormal
Power supply of
3 times in an
121 121 inverter board is Power supply of inverter board is broken down instantly
hour, confirm
abnormal
failure; once
Radiator temp.
Resistor of temp. sensor abnormal or temp. sensor confirmation,
122 122 sensor of transducer
disconnected un-resumable
abnormal
3 times in an
Transient over
hour, confirm
current in IPM
123 123 Transient over current in IPM module rectifier side hardware failure; once
module rectifier side
confirmation,
hardware
un-resumable

When there is no failure, if the starting condition can not be met, digital tube on master unit will display stand-by
code:

When capacity is over 130% or lower than 50%, the

555.0 Standby state of capacity overmatch
system is standby.
555.1 Outdoor ambient temperature too high (heating) Ta>27°C, Standby Resumable
Outdoor ambient temperature too high or too low
555.3 Ta>54°C or Ta<-15°C, Standby
(cooling)

44
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 16. Troubleshooting
[20-23] Temperature sensor failure

If sensor terminal is fixed well Reconnect

If sensor resistor
/characteristic is proper Replace sensor

Check if PCB is faulty,

if yes, replace it

[122] Radiator temp. sensor of transducer abnormal

No
Check if connection between temp. Adjust connection
sensor and inverter board

Yes

No
Measure if temp. sensor resistor is Replace sensor
normal

Yes

Replace inverter control board

45
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 [26-0, 26-1, 26-2] Communication circuit between indoor and outdoor

If wiring between P and Q Yes Modify the communication wire

is wrong or broken down

No

If wire of on outdoor No
Modify the port
connecting board is normal

Yes

If the wire on indoor No

PCB is normal

Yes

If indoor and outdoor are No

Connect power source
electrified at the same time

Yes

If communication wire is separate No

Change communication wiring type
from high-voltage wire on layout

Yes

If indoor quantity is correct Yes Shut off power supply, and outdoor
(check by rotary switch) searches for indoors again

No

Yes Eliminate electromagnetic interference

Electromagnetic interference

No

If failure disappears after

changing indoor PCB

No

Check outdoor PCB, if faulty, replace it

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 [28, 29] High/low pressure sensor failure

No
If sensor terminal is fixed well Reconnect

Yes

If voltage between red terminal No

and black terminal is 5V when Replace PCB
testing pressure sensor by
multimeter

Yes

If voltage between white terminal and black Yes

Replace pressure sensor
terminal is 0.5V~3.5V when testing pressure
sensor by multimeter

No

Replace connecting board

47
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 [30] High pressure switch failure

If connection between pressure No

Re-connect
switch and connecting board is
good
Yes

If the system pressure meets the No

Replace pressure switch
condition that pressure switch
shuts off
Yes

Make pressure switch

No
close, measure if terminal
is conductive by multimeter

Yes

Yes
If the system is clogged Check the piping system

No

Make pressure switch terminal Yes

on connecting board in short Replace connecting board
circuit, check if failure exists still

No

Replace pressure switch

and measure again

48
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 [33] Outdoor EEPROM failure

No
If the EEPROM is fixed well Reconnect

Yes

Replace EEPROM

[34] Protection of discharging temp. too high

If sensor terminal is fixed No

Reconnect
well

Yes

If sensor resistor No Replace sensor

/characteristic is proper

Yes

If the system is Yes

Charge refrigerant
lack of refrigerant

No

Replace connecting
board

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 [35] 4-way valve reversing failure

If connection between 4-way valve No

Re-connect
and connecting board is good

Yes

If system meets condition No

of 4-way valve reversing: Check if SV1 leaks
Pd-Ps>0.6MPa

Yes

Measure if CN49 voltage

on connecting board is No
220VAC after 4-way valve Replace connecting board
reversing condition is met

Yes

If compressor running No
Check compressor
current is normal

Yes

If there is air noise after 4-way

valve reverses, and if the temp. of
connection pipes with 4-way valve is
normal

No

Replace 4-way valve

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 [39-0, 39-1] Low pressure too low and compression ratio too high

If actual pressure is in No
conformance with the Replace pressure sensor
measured data by sensor

Yes

Check if stop valve No

Open stop valve
is open fully

Yes

Check if system is Yes

Recharge refrigerant
lack of refrigerant

No

Check if terminal of
electronic expansion No Re-connect the terminals
valve coil is fixed well

Yes

Check if piping Yes

Clear the piping
system is clogged

[39-2] Compression ratio too low

If actual pressure is in No
conformance with the Replace pressure sensor
measured data by sensor

Yes

Check if compressor No
Check compressor
running current is normal

Yes

Yes
Check if 4-way valve Replace 4-way valve
is interconnected

51
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 [40] High pressure too high failure

If characteristic No
of high pressure Replace pressure sensor
sensors are normal

Yes

If stop valve No
Open stop valve
opens fully

Yes

If in cooling No
outdoor fan motor Check fan motor
runs normally

Yes

If in heating indoor fan Yes

motor runs normally Check indoor
and if filter is clogged

No

Check if piping Yes

system is clogged Clear the piping

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 [43] Discharging temp. sensor Td too low protection

If the sensor characteristic No

Replace the sensor
is correct

Yes

If the terminal of No
Reconnect
sensor is fixed well

Yes

In cooling mode, when the Yes Replace of adjustment the

indoor unit off if the EEV can't indoor unit EEV
completely close

No

Check if refrigerant Yes Recharge refrigerant

is too much

[46] Communication with inverter module failure

Check if communication wire No

between connecting board and Re-connect
module is connected normally

Yes

In cooling mode, when the Yes

Replace wire
indoor unit off if the EEV
can't completely close

No

Measure if voltage of No
CN28 on connecting board Replace connecting board
changes by multimeter

Yes

Replace module

53
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 [53] CT Current too low or current sensor failure

Check if where between

connecting board and CT No
Re-connect
board is connected well (CN9)

Yes

No
Check if CT wire is conductive Replace wire

Yes

Check if it is normal after No

Replace connecting board
replacing CT board

Yes

CT board is broken down

54
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 [64] CT current too high

Check if wire between

connecting board and module No
is connected normally Re-connect

Yes

No
Check if CT wire is conductive Replace wire

Yes

No Yes If normal after

If temperature on top of fixed If AC contactor replacing CT
frequency compressor is too work detector
high
No
Yes
Replace PCB

Yes
If there is air into the system Recharge refrigerant

No

Yes
If there is clogged, motor is bad Fix the system

No

Replace compressor

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 [71-0,71-1 ] DC motor blocked

Rotate fan motor by

Yes
hand to check if there Replace fan motor
is obviously fiction

No

Check the motor and No

PCB connection is well Re-connect

Yes

Forced the fan in low speed, No

measure if it has alternating Replace the motor
voltage between FG and GND

Yes

Replace the outdoor PCB

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 [75-0, 75-4] Pressure difference between high pressure and low pressure is abnormal

Check if high/ low pressure No Re-connect

sensor is connected well

Yes

Check if compressor wire is No Correct compressor wire

connected normally

Yes

If wire of inverter compressor No Correct compressor wire

are connected oppositely

No

If 4-way valve is Yes

Replace 4-way valve
interconnected

No

Measure if there is voltage No

U, V, W of compressor by Replace inverter module
multimeter, and if it is normal

Yes

Replace inverter compressor

57
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 [82] Compressor current protection
[108] Transient over current in IPM module rectifier side software
[110] IPM module hardware over current
[123] Transient over current in IPM module rectifier side hardware

No Improver power supply circuit

Check if voltage of power
supply in normal

Yes

Check if wire of electric box No Correct the wiring due to diagram

is correct and if compressor
wire is fixed well

Yes

If compressor is normal No
(compressor coil resistor Replace compressor
insulation)

Yes

No
If power module is normal Replace power module

Yes

If there are the other No

failure recently, such as Remove the failure
112, 113, 117

Yes

Solve the failures due to

relative information

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 [111] Compressor out of control

[118] the compressor start failure

No
Check if voltage of power supply is normal Improve power supply circuit

Yes

Check the wires among U, V, No

Replace the wires
W of compressor are normal

Yes

If compressor is normal No
(compressor coil resistor, insulation) Replace the compressor

Yes

Compressor load too much,

check the reason

[112] Radiator temp. of transducer too high; [81] IPM module temp. too high;

Check the temperature sensor No

Replace the sensor
characteristic is correct

Yes

Yes
Check the radiator is blocked Clean the radiator

Yes

If screw of module is fixed well, and if No Fix it well and daub gel
radiating silica gel is daubed enough
again, clean the radiator
and evenly, if there is no dirt on radiator

Yes
Improve the running
environment of outdoor unit

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 [113] Protection of overload

No
Check if voltage of power supply is normal Improve power supply circuit

Yes

No
Check if wire of electric box is correct Correct the wiring due to diagram

Yes

If compressor is normal No
Replace compressor
(compressor coil resistor, insulation)

Yes

If power module is normal No

Replace power module

Yes

Compress load too much,

check the reason
[114] Voltage too low of DC bus line of transducer

Check if voltage of power No

Improve power supply circuit
supply is normal

Yes

No
Check if wire of electric box Correct the wiring due to diagram
is correct

Yes

No
If AC contactor or relay acts well Adjust or replace relay

Yes

Measure if DC bus line No Circuit of DC bus line voltage on

voltage between P and N of inverter control board abnormal,
module is less than 375V replace inverter control board

Yes
Check rectifier, reactor, electrolytic
capacitor in inverter main circuit

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 [115] Voltage too high of DC bus line of transducer

Check if voltage of power No

Improve power supply circuit
supply is normal

Yes

No
Check if wire of electric box is correct Correct the wiring due to diagram

Yes

Measure if DC bus line No Circuit of DC bus line voltage on

voltage between P and N of inverter control board abnormal,
module is over 644V replace inverter control board
Yes

Check rectifier, reactor, electrolytic

capacitor in inverter main circuit

[116] Communication abnormal between transducer (inverter module board) and control PCB

Yes
Check if wire between control PCB and Adjust communication wire
inverter board is abnormal

No

Check if communication circuit of Yes

main control PCB is abnormal Replace main control board
(if signal LED flashes abnormally)

No

Yes Detecting circuit on inverter board

If inverter module board is abnormal broken down, replace inverter
module board

No

Solve the failures due to relative

information

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 [117] Transducer over current (software protection)

No
Check voltage of power supply is normal Improve power supply circuit

Yes

No
Check if wire of electric box is correct Correct the wiring due to diagram

Yes

If compressor is normal No
(compressor coil resistor, insulation) Replace compressor

Yes

No
If power module is normal Replace power module

Yes

Compressor load too much,

check the reason

[119] Current detection circuit of transducer is abnormal

Check if wire between

DCCT and control board No
wire between IPM and Correct the wiring due to diagram
compressor are correct; if
wiring direction of DCCT
is normal

Yes

Check if current sensor is No

Replace current sensor
normal

Yes

Replace inverter PCB

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 [120] Power supply of transducer abnormal

No
Check if voltage of power supply is normal Improve power supply circuit

Yes

No
Check if wire of electric box is correct Correct the wiring due to diagram

Yes

No Adjust or replace relay

If relay or AC contactor acts well or AC contactor

Yes

Measure if DC bus line No DC bus line voltage circuit on

voltage between P and N on inverter board broken down,
module is less than 140V replace inverter module board

Yes

Check rectifier, reactor,

electrolytic capacitor in
inverter main circuit
[121] Power supply of inverter board is abnormal

Check if voltage of power supply No

on inverter control board is normal Improve power supply circuit

Yes

Check if wire between control PCB Yes

Adjust communication wire
and inverter board is abnormal

Yes

Yes
If circuit of inverter control board is abnormal Replace power module

No

Solve the failures due to relative information

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 [122] Radiator temp. sensor of transducer abnormal

Check if connection between No

temp. sensor and inverter board Adjust connection

Yes

No
Measure if temp. sensor resistor Replace sensor
is normal

Yes

Replace inverter control board

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 Appendix I: Sensor Resistance Table

Code Resistance Description

0010450192 10K Outdoor ambient temp. sensor

0010450194 10K Defrosting temp. sensor

0010451303 50K Discharging temp. sensor

0010451307 10K Suction temp. sensor

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 R80=50kΩ±3% B25/80=4450K±3%
Temp Resistance (kΩ) % (Resist. Tol)
(°C) Rmax R (t) Normal Rmin MAX (+) MIN (-)
0 1749.01 1921.99 2094.97 9.00 9.00
1 1651.43 1813.27 1975.10 8.93 8.93
2 1560.17 1711.65 1863.13 8.85 8.85
3 1474.74 1616.59 1758.45 8.78 8.78
4 1394.71 1527.61 1660.51 8.70 8.70
5 1319.68 1444.25 1568.82 8.63 8.63
6 1249.30 1366.10 1482.90 8.55 8.55
7 1183.21 1292.77 1402.34 8.48 8.48
8 1121.12 1223.94 1326.75 8.40 8.40
9 1062.76 1159.27 1255.77 8.33 8.33
10 1007.85 1098.47 1189.10 8.25 8.25
11 956.17 1041.29 1126.42 8.18 8.18
12 907.49 987.48 1067.46 8.10 8.10
13 861.62 936.80 1011.98 8.03 8.03
14 818.37 889.05 959.73 7.95 7.95
15 777.57 844.04 910.51 7.88 7.88
16 739.07 801.59 864.11 7.80 7.80
17 702.71 761.53 820.36 7.73 7.73
18 668.35 723.72 779.08 7.65 7.65
19 635.89 688.00 740.12 7.58 7.58
20 605.19 654.25 703.32 7.50 7.50
21 576.15 622.36 668.57 7.43 7.43
22 548.66 592.19 635.72 7.35 7.35
23 522.65 563.65 604.66 7.28 7.28
24 498.01 536.64 575.28 7.20 7.20
25 474.66 511.08 547.49 7.13 7.13
26 452.54 486.86 521.19 7.05 7.05
27 431.56 463.92 496.28 6.98 6.98
28 411.67 442.18 472.69 6.90 6.90
29 392.80 421.57 450.34 6.83 6.83
30 374.89 402.03 429.17 6.75 6.75
31 357.89 383.49 409.09 6.68 6.68
32 341.75 365.90 390.05 6.60 6.60
33 326.42 349.20 371.99 6.53 6.53
34 311.85 333.35 354.85 6.45 6.45
35 298.00 318.30 338.59 6.38 6.38
36 284.84 304.00 323.15 6.30 6.30

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 R80=50kΩ±3% B25/80=4450K±3%
Temp Resistance (kΩ) % (Resist. Tol)
(°C) Rmax R (t) Normal Rmin MAX (+) MIN (-)
37 272.33 290.41 308.49 6.23 6.23
38 260.43 277.49 294.56 6.15 6.15
39 249.10 265.22 281.33 6.08 6.08
40 238.33 253.54 268.75 6.00 6.00
41 228.07 242.44 256.80 5.93 5.93
42 218.31 231.87 245.44 5.85 5.85
43 209.01 221.82 234.63 5.78 5.78
44 200.15 212.25 224.35 5.70 5.70
45 191.72 203.14 214.57 5.63 5.63
46 183.67 194.47 205.26 5.55 5.55
47 176.01 186.20 196.40 5.48 5.48
48 168.70 178.33 187.96 5.40 5.40
49 161.74 170.83 179.93 5.33 5.33
50 155.09 163.68 172.28 5.25 5.25
51 148.75 156.87 164.98 5.18 5.18
52 142.70 150.37 158.04 5.10 5.10
53 136.92 144.17 151.41 5.03 5.03
54 131.41 138.26 145.10 4.95 4.95
55 126.15 132.61 139.08 4.88 4.88
56 121.12 127.23 133.34 4.80 4.80
57 116.32 122.09 127.86 4.73 4.73
58 111.73 117.18 122.63 4.65 4.65
59 107.35 112.49 117.64 4.58 4.58
60 103.16 108.02 112.88 4.50 4.50
61 99.15 103.74 108.33 4.43 4.43
62 95.32 99.65 103.99 4.35 4.35
63 91.66 95.75 99.84 4.28 4.28
64 88.15 92.01 95.88 4.20 4.20
65 84.80 88.44 92.09 4.13 4.13
66 81.58 85.03 88.47 4.05 4.05
67 78.51 81.76 85.01 3.98 3.98
68 75.57 78.64 81.70 3.90 3.90
69 72.75 75.65 78.54 3.83 3.83
70 70.05 72.78 75.51 3.75 3.75
71 67.47 70.04 72.61 3.68 3.68

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 R80=50kΩ±3% B25/80=4450K±3%
Temp Resistance (kΩ) % (Resist. Tol)
(°C) Rmax R (t) Normal Rmin MAX (+) MIN (-)
72 64.99 67.42 69.84 3.60 3.60
73 62.61 64.90 67.19 3.53 3.53
74 60.34 62.49 64.65 3.45 3.45
75 58.15 60.19 62.22 3.38 3.38
76 56.06 57.97 59.89 3.30 3.30
77 54.05 55.85 57.65 3.23 3.23
78 52.13 53.82 55.52 3.15 3.15
79 50.28 51.87 53.47 3.08 3.08
80 48.50 50.00 51.50 3.00 3.00
81 46.73 48.21 49.68 3.07 3.07
82 45.03 46.48 47.94 3.13 3.13
83 43.40 44.83 46.27 3.20 3.20
84 41.83 43.25 44.66 3.27 3.27
85 40.33 41.72 43.11 3.33 3.33
86 38.89 40.26 41.63 3.40 3.40
87 37.51 38.86 40.20 3.47 3.47
88 36.18 37.51 38.83 3.53 3.53
89 34.91 36.21 37.51 3.60 3.60
90 33.68 34.96 36.24 3.67 3.67
91 32.50 33.76 35.03 3.73 3.73
92 31.37 32.61 33.85 3.80 3.80
93 30.29 31.50 32.72 3.87 3.87
94 29.24 30.44 31.64 3.93 3.93
95 28.24 29.41 30.59 4.00 4.00
96 27.27 28.43 29.58 4.07 4.07
97 26.34 27.48 28.61 4.13 4.13
98 25.45 26.56 27.68 4.20 4.20
99 24.59 25.69 26.78 4.27 4.27
100 23.76 24.84 25.91 4.33 4.33
101 22.97 24.02 25.08 4.40 4.40
102 22.20 23.24 24.28 4.47 4.47
103 21.46 22.48 23.50 4.53 4.53
104 20.75 21.75 22.75 4.60 4.60

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 R80=50kΩ±3% B25/80=4450K±3%
Temp Resistance (kΩ) % (Resist. Tol)
(°C) Rmax R (t) Normal Rmin MAX (+) MIN (-)
105 20.07 21.05 22.03 4.67 4.67
106 19.41 20.37 21.34 4.73 4.73
107 18.77 19.72 20.67 4.80 4.80
108 18.16 19.09 20.02 4.87 4.87
109 17.57 18.49 19.40 4.93 4.93
110 17.01 17.90 18.80 5.00 5.00
111 16.46 17.34 18.22 5.07 5.07
112 15.93 16.79 17.66 5.13 5.13
113 15.42 16.27 17.11 5.20 5.20
114 14.93 15.76 16.59 5.27 5.27
115 14.46 15.28 16.09 5.33 5.33
116 14.01 14.80 15.60 5.40 5.40
117 13.57 14.35 15.13 5.47 5.47
118 13.14 13.91 14.68 5.53 5.53
119 12.73 13.49 14.24 5.60 5.60
120 12.34 13.08 13.82 5.67 5.67
121 11.96 12.69 13.41 5.73 5.73
122 11.59 12.31 13.02 5.80 5.80
123 11.24 11.94 12.64 5.87 5.87
124 10.90 11.58 12.27 5.93 5.93
125 10.57 11.24 11.92 6.00 6.00
126 10.25 10.91 11.57 6.07 6.07
127 9.94 10.59 11.24 6.13 6.13
128 9.65 10.29 10.92 6.20 6.20
129 9.36 9.99 10.61 6.27 6.27
130 9.09 9.70 10.32 6.33 6.33
131 8.82 9.43 10.03 6.40 6.40
132 8.57 9.16 9.75 6.47 6.47
133 8.32 8.90 9.48 6.53 6.53
134 8.08 8.65 9.22 6.60 6.60
135 7.85 8.41 8.97 6.67 6.67
136 7.63 8.18 8.73 6.73 6.73
137 7.42 7.96 8.50 6.80 6.80
138 7.21 7.74 8.27 6.87 6.87
139 7.01 7.53 8.06 6.93 6.93
140 6.82 7.33 7.85 7.00 7.00

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 R25=10kΩ±3% B25/50=3700K±3%
Temp Resistance (kΩ) % (Resist. Tol)
(°C) Rmax R (t) Normal Rmin MAX (+) MIN (-)
-30 145.82 135.02 124.22 7.00 7.00
-29 138.07 129.13 120.18 6.93 6.93
-28 131.79 123.34 114.89 6.85 6.85
-27 125.67 117.68 109.70 6.78 6.78
-26 119.71 112.18 104.65 6.71 6.71
-25 113.93 106.84 99.75 6.64 6.64
-24 108.36 101.69 95.01 6.56 6.56
-23 103.00 96.72 90.44 6.49 6.49
-22 97.85 91.95 86.05 6.42 6.42
-21 92.92 87.37 81.83 6.35 6.35
-20 88.20 82.99 77.79 6.27 6.27
-19 83.70 78.82 73.93 6.20 6.20
-18 79.42 74.83 70.25 6.13 6.13
-17 75.34 71.04 66.74 6.05 6.05
-16 71.47 67.44 63.40 5.98 5.98
-15 67.80 64.02 60.23 5.91 5.91
-14 64.32 60.77 57.22 5.84 5.84
-13 61.02 57.69 54.37 5.76 5.76
-12 57.90 54.78 51.66 5.69 5.69
-11 54.94 52.02 49.10 5.62 5.62
-10 52.15 49.41 46.67 5.55 5.55
-9 49.51 46.94 44.37 5.47 5.47
-8 47.02 44.61 42.20 5.40 5.40
-7 44.66 42.40 40.14 5.33 5.33
-6 42.43 40.32 38.20 5.25 5.25
-5 40.33 38.35 36.36 5.18 5.18
-4 38.35 36.48 34.62 5.11 5.11
-3 36.47 34.72 32.97 5.04 5.04
-2 34.70 33.06 31.42 4.96 4.96
-1 33.03 31.49 29.95 4.89 4.89
0 31.45 30.00 28.56 4.82 4.82
1 29.95 28.59 27.24 4.75 4.75
2 28.54 27.26 25.99 4.67 4.67
3 27.20 26.01 24.81 4.60 4.60
4 25.94 24.82 23.69 4.53 4.53

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 R25=10kΩ±3% B25/50=3700K±3%
Temp Resistance (kΩ) % (Resist. Tol)
(°C) Rmax R (t) Normal Rmin MAX (+) MIN (-)
5 24.74 23.69 22.63 4.45 4.45
6 23.61 22.62 21.63 4.38 4.38
7 22.54 21.61 20.68 4.31 4.31
8 21.52 20.65 19.77 4.24 4.24
9 20.56 19.74 18.92 4.16 4.16
10 19.65 18.87 18.10 4.09 4.09
11 18.78 18.05 17.33 4.02 4.02
12 17.96 17.28 16.59 3.95 3.95
13 17.18 16.54 15.90 3.87 3.87
14 16.44 15.83 15.23 3.80 3.80
15 15.73 15.17 14.60 3.73 3.73
16 15.06 14.53 14.00 3.65 3.65
17 14.42 13.93 13.43 3.58 3.58
18 13.82 13.35 12.88 3.51 3.51
19 13.24 12.80 12.36 3.44 3.44
20 12.69 12.28 11.86 3.36 3.36
21 12.17 11.78 11.39 3.29 3.29
22 11.67 11.30 10.94 3.22 3.22
23 11.19 10.85 10.51 3.15 3.15
24 10.73 10.41 10.09 3.07 3.07
25 10.30 10.00 9.70 3.00 3.00
26 9.90 9.60 9.31 3.06 3.06
27 9.51 9.23 8.94 3.13 3.13
28 9.15 8.86 8.58 3.19 3.19
29 8.80 8.52 8.24 3.25 3.25
30 8.46 8.19 7.92 3.31 3.31
31 8.14 7.87 7.61 3.38 3.38
32 7.83 7.57 7.31 3.44 3.44
33 7.53 7.28 7.02 3.50 3.50
34 7.25 7.00 6.75 3.56 3.56
35 6.98 6.73 6.49 3.63 3.63
36 6.72 6.48 6.24 3.69 3.69
37 6.47 6.23 6.00 3.75 3.75
38 6.23 6.00 5.77 3.81 3.81
39 6.00 5.77 5.55 3.88 3.88
40 5.78 5.56 5.34 3.94 3.94
41 5.56 5.35 5.14 4.00 4.00

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 R25=10kΩ±3% B25/50=3700K±3%
Temp Resistance (kΩ) % (Resist. Tol)
(°C) Rmax R (t) Normal Rmin MAX (+) MIN (-)
42 5.36 5.15 4.94 4.06 4.06
43 5.17 4.96 4.76 4.13 4.13
44 4.98 4.78 4.58 4.19 4.19
45 4.80 4.60 4.41 4.25 4.25
46 4.63 4.43 4.24 4.31 4.31
47 4.46 4.27 4.09 4.38 4.38
48 4.30 4.12 3.94 4.44 4.44
49 4.15 3.97 3.79 4.50 4.50
50 4.00 3.83 3.65 4.56 4.56
51 3.86 3.69 3.52 4.63 4.63
52 3.72 3.56 3.39 4.69 4.69
53 3.59 3.43 3.27 4.75 4.75
54 3.47 3.31 3.15 4.81 4.81
55 3.35 3.19 3.04 4.88 4.88
56 3.23 3.08 2.93 4.94 4.94
57 3.12 2.97 2.83 5.00 5.00
58 3.02 2.87 2.73 5.06 5.06
59 2.91 2.77 2.63 5.13 5.13
60 2.82 2.68 2.54 5.19 5.19
61 2.72 2.59 2.45 5.25 5.25
62 2.63 2.50 2.36 5.31 5.31
63 2.54 2.41 2.28 5.38 5.38
64 2.46 2.33 2.21 5.44 5.44
65 2.38 2.26 2.13 5.50 5.50
66 2.30 2.18 2.06 5.56 5.56
67 2.23 2.11 1.99 5.63 5.63
68 2.16 2.04 1.92 5.69 5.69
69 2.09 1.97 1.86 5.75 5.75
70 2.02 1.91 1.80 5.81 5.81
71 1.96 1.85 1.74 5.88 5.88
72 1.90 1.79 1.69 5.94 5.94
73 1.84 1.74 1.63 6.00 6.00
74 1.78 1.68 1.58 6.06 6.06
75 1.73 1.63 1.53 6.13 6.13

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 R25=10kΩ±3% B25/50=3700K±3%
Temp Resistance (kΩ) % (Resist. Tol)
(°C) Rmax R (t) Normal Rmin MAX (+) MIN (-)
76 1.68 1.58 1.48 6.19 6.19
77 1.63 1.53 1.43 6.25 6.25
78 1.58 1.48 1.39 6.31 6.31
79 1.53 1.44 1.35 6.38 6.38
80 1.49 1.40 1.31 6.44 6.44
81 1.44 1.36 1.27 6.50 6.50
82 1.40 1.32 1.23 6.56 6.56
83 1.36 1.28 1.19 6.63 6.63
84 1.32 1.24 1.16 6.69 6.69
85 1.29 1.20 1.12 6.75 6.75
86 1.25 1.17 1.09 6.81 6.81
87 1.21 1.14 1.06 6.88 6.88
88 1.18 1.10 1.03 6.94 6.94
89 1.15 1.07 1.00 7.00 7.00
90 1.12 1.04 0.97 7.06 7.06
91 1.09 1.01 0.94 7.13 7.13
92 1.06 0.99 0.91 7.19 7.19
93 1.03 0.96 0.89 7.25 7.25
94 1.00 0.93 0.86 7.31 7.31
95 0.97 0.90 0.84 7.38 7.38
96 0.94 0.88 0.81 7.44 7.44
97 0.92 0.85 0.79 7.50 7.50
98 0.89 0.83 0.77 7.56 7.56
99 0.87 0.81 0.75 7.63 7.63
100 0.84 0.78 0.72 7.69 7.69
101 0.82 0.76 0.70 7.75 7.75
102 0.80 0.74 0.68 7.81 7.81
103 0.77 0.72 0.66 7.88 7.88
104 0.75 0.69 0.64 7.94 7.94
105 0.73 0.67 0.62 8.00 8.00

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 Appendix II: Enthalpy-Humidity Chart

0 102xPa 5 10 15 20 25 30 35 40 45 50 55 60

0mmHg 5 10 15 20 25 30 35 40 45
Humidity d. g/kg dry air
0 5 10 15 20 25 30 35 40

60
55

55
50

50
45

45
40

40
40
35
35

0
13

33
30 30

32
0
12
0

31
10

30
25 25

25

29
11
90

24

28
70

20

23

27
20

22
18

80

26
60

21
17

15 15 20
16
40

19
15
50

10
14
11

10
13
10
30

0
12

5 1000
9

5
8
20

0 k∫ /kg
7

0
6
10

00
kcal /kg
5

50
-5
4
g干空气
0

g干空气

2500

00
3

15 0

40
/k

-10
200
/k
k∫

00
2
al
kc

1
焓

-15
00
10
3000
0

-20
Heat-humidity ratio
-1

0
-1
0

-25
-2

-2
-3

-30 500
-4

Wet ait enthalpy-humidity chart 2000

-5

1000
-6

1013.25mbar (10Pa)
Atmosphetic ptessute
-7

760mmHg
i
d
0

10
-50
-10 00

=1.01t+0.001d(2500+1.84t)k∫/kg dtyait
-15 00

00
-25

0
00

=1.24t+0.001d(597.3+0.44t)kcal/kg dtyait
0
-10
-20 00

00
-30 00
-40

00
-500
-10000

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 Haier Commercial Air Condition

Web: Http://www.haier.com
Haier reserves the right to make change without any notice.

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