FLOOR STAND TYPE AIR CONDITIONER

Basic : AF55JV1MAEE
Model : AC048KNPPCC / AC048KXQPCC
AC036KNPPCC / AC036KXQPCC
AC140KNPDEH / AC140KXADGH
AC100KNPDEH / AC100KXADEH
AC048KNPDEC / AC048KXADGC
AC036KNPDEC / AC036KXADEC
Model Code : AC048KNPPCC/MG AC048KXQPCC/MG
AC036KNPPCC/MG AC036KXQPCC/MG
AC140KNPDEH/EU AC140KXADGH/EU
AC100KNPDEH/EU AC100KXADEH/EU
AC048KNPDEC/TL AC048KXADGC/TL
AC036KNPDEC/TL AC036KXADEC/TL
AC036KNPDEC/SV AC036KXADEC/SV

AIR CONDITIONER CONTENTS

1. Precautions

2. Product Specifications

3. Disassembly and Reassembly

4. Troubleshooting

5. PCB Diagram

6. Wiring Diagram

7. Reference Sheet

AC048KNPPCC AC048KXQPCC AC100KXADEH

AC036KNPPCC AC036KXQPCC AC036KXADEC
AC140KNPDEH AC140KXADGH
AC100KNPDEH AC048KXADGC
AC048KNPDEC
AC036KNPDEC
Contents
1. Precautions ······································································································································· 1-1
1-1 Precautions for the Service ············································································································ 1-1
1-2 Precautions for the Static Electricity and PL ··············································································· 1-1
1-3 Precautions for the Safety ·············································································································· 1-1
1-4 Others ················································································································································ 1-1

2. Product Specifications ·············································································································· 2-1

2-1 The Feature of Product ··················································································································· 2-1
2-1-1 Features ·································································································································· 2-1
2-1-2 Changes in comparison to basic model ············································································ 2-2
2-2 The Comparative Specifications of Product ················································································ 2-3
2-3 Accessory and Option Specifications ··························································································· 2-5
2-3-1 Filter·········································································································································· 2-5
2-3-2 Accessory································································································································· 2-5

3. Disassembly and Reassembly ······························································································ 3-1

3-1 Indoor Unit ······································································································································· 3-2
3-2 Outdoor Unit ···································································································································· 3-10

4. Troubleshooting ···························································································································· 4-1

4-1 Indoor Display Error and Check Method ····················································································· 4-1
4-1-1 Indoor unit LED display at error detecting ······································································· 4-1
4-2 Outdoor Trouble shooting ············································································································· 4-2
4-3 Troubleshooting by symptoms ····································································································· 4-5
4-3-1 Communication error after finishing tracking (E202) ······························································ 4-5
4-3-2 Outdoor's service valve(Clog) ············································································································ 4-6
4-3-3 No Power(completely dead) - Initial diagnosis ································································· 4-7
4-3-4 E102 : Communication error between indoor and outdoor unit
E201 : Unit quantity miss matching beween Indoor and Outdoor
E202 : Abnormal state, no communication between Indoor and Outdoor Main PCB
E203 : 1min Time out of communication error(Main↔Inverter) ········································· 4-11
4-3-5 External Sensor Error (Error Code: E221, E231, E251, E320) ·················································· 4-12
4-3-6 E403 : Freezing control causes comp. down ··············································································· 4-13
4-3-7 E416 : Dischage temperature sensor error ··················································································· 4-14
4-3-8 E440, E441 : Abnormal outside temperature halts operation of the compressor ······· 4-15
4-3-9 Outdoor unit BLDC Fan1 or Fan2 error (E458 : Fan1 error, E475 : Fan2 error) ··············· 4-16
Contents
4-3-10 E461: Compressor start error
E467: Compressor wire missing error ·························································································· 4-17
4-3-11 E462 : Current protection control causes comp. down
E484 : PFC overload error ·················································································································· 4-18
4-3-12 E463 : OLP protection control caused comp. down ······························································ 4-19
4-3-13 E464 : O.C. (Over Current) error······································································································· 4-20
4-3-14 E466: DC Link Over voltage/ Low voltage error······································································· 4-21
4-3-15 Pipe Blocking Error (Error Code: E422) ························································································ 4-22
4-3-16 The others ················································································································································ 4-23
4-3-17 Setting an indoor unit installation option ················································································· 4-24

5. PCB Diagram ··································································································································· 5-1

5-1 Indoor unit ········································································································································ 5-1
5-1-1 Main PCB ································································································································ 5-1
5-1-2 Power PCB ······························································································································ 5-3
5-1-3 Panel PCB ································································································································ 5-4
5-2 Outdoor unit ···································································································································· 5-5
5-2-1 Main PCB Diagram ················································································································ 5-5
5-2-2 Inverter PCB ··························································································································· 5-6
5-2-3 EMI PCB ··································································································································· 5-10

6. Wiring Diagram ····························································································································· 6-1

6-1 Indoor unit ········································································································································ 6-1
6-2 Outdoor unit ···································································································································· 6-2

7. Reference Sheet ···························································································································· 7-1

7-1 Index for Model Name ···················································································································· 7-1
7-2 Refrigerating Cycle Diagram ·········································································································· 7-2
1. Precautions

1-1 Precautions for the Service

 Use the standard parts when replacing the electric parts.
– Confirm the model name, rated voltage, rated current of the electric parts.
 Repair the disconnection of HARNESS securely when repairing the break down.
– If there is any connection error, it causes an abnormal noise and incorrect operation.
 In case that you assemble or disassemble the products with laying it on the side, do work on the work cloth.
– If not, the exterior of products can be scratched.
 Remove dust and foreign materials from harness, connection part, and inspection part thoroughly when repairing the break down.
– It protects the danger of fire such as tracking and short.
 Tighten tightly the service valve of outdoor unit and the cap of charging valve with a monkey spanner.
 Check the assembly status of parts after repairing the break down.
– It should be same as the status before repairing.

1-2 Precautions for the Static Electricity and PL

 As the PCB power terminal has a weakness for the static electricity, pay attention to it during the repair and measurement.
– Work with insulation gloves during the repair and measurement of PCB.
 Check the distance between the product and the other electronic appliances such as TV, video, and audio. It should be over 2m.
– If not, it causes a bad picture quality or a noise.
 Repairing the products by consumer should be strictly prohibited.
– There is a danger of electric shock or fire due to incorrect disassembly.

1-3 Precautions for the Safety

 Do not pull any electric wires and do not touch an auxiliary power switch with a wet hand.
– There is a danger of electric shock or fire.
 In case any wire or power plug has been damaged, replace it to eliminate any possible danger.
 Do not bend the power cord by force and do not put any heavy object on the power cord.
– There is a danger of electric shock or fire.
 Do not use multi socket.
– There is a danger of electric shock or fire.
 Ground the product if necessary.
– Be sure to ground the product if there is any danger of electric leakage due to water or moisture.
 Be sure to turn off the auxiliary power switch or pull out the power plug during replacement or repair of electric parts.
– There is a danger of electric shock.
 In case the product will not be in use for a long time, the battery of remote control should be kept separately.
– Leakage of inside fluid can cause break down of remote control.

1-4 Others
 Never store or load the air conditioner upside down or sideways to prevent the damage to the compressor.
 Young children or infirm persons should be always supervised when they use the air conditioner.
 Max current is measured according to IEC standard for safety.
 Current is measured according to ISO standard for energy efficiency.
 When installing, make sure there is no leakage. When recovering the refrigerant, ground the compressor first before removing the
connection pipe. If the refrigerant pipe is not properly connected and the compressor works with the service valve open, the pipe
inhales the air and it makes the pressure inside of the refrigerant cycle abnormally high. It may cause explosion and injury.
 Pump Down Procedure (When removing the product)
- Turn on the air conditioner and select Cool mode to run the compressor for 3 minutes.
- Release the valve caps on High and Low pressure side.
- Use L wrench to close the valve on the high pressure side.
- Approximately 2 minutes after, close the valve on the low pressure side.
- Stop operation of the air conditioner.
- Disconnect the pipes.

Samsung Electronics 1-1

 Product Specifications

2. Product Specifications

2-1 The Feature of Product

2-1-1 Features
 Strong Turbo/convenient long-distance operation
Quicker and more consistent air cooling/warming is guaranteed by turbo operation that provides strong
cooling/warming for 30 minutes or by long-distance operation that ensures cooling/warming even in places a
long way from the air conditioner.

 Stylish, high quality design

Neat and luxurious style boasts high-quality interior design that fits naturally into any place.

 Compact Remote Controller

A small hand-size remote control makes it even easier to use.

 Long Piping(Length & Height)

It can give the benefit to the installers and aries the reliability of the air conditioner.

 Long Ambient Operation(In Low Temperature)

It can arise the reliability and the capacity of the air conditioner, especially operated in low temperature.

 Eco-friendly Product (Lead-Free, RoHS, WEEE)

 High Performance & Energy Saving

With the advanced BLDC inverter technology, it makes a room cool with highly energy saving and arises the efficiency of air
conditioner.

Samsung Electronics 2-1

Product Specifications

2-1-2 Changes in comparison to basic model

Changed part Changed item and feature Basic After changed

Indoor Unit Wi-Fi Function added.

Outdoor Unit Inverter controller changed.

(AC048KXQPCC
AC036KXQPCC
AC140KXADGH
AC048KXADGC)

Outdoor Unit
(AC100KXADEH
AC036KXADEC)

- -

2-2 Samsung Electronics

 Product Specifications
2-2 The Comparative Specifications of Product

Development Model Basic Model

Item AC048KNPPCC AC036KNPPCC AC140KNPDEH AC100KNPDEH AC048KNPDEC AC036KNPDEC AF55JV1MAEEN
AC048KXQPCC AC036KXQPCC AC140KXAPGH AC100KXAPEH AC048KXAPGC AC036KXADEC AF55JV1MAEEX

Indoor Unit

Design

Outdoor Unit

Wireless Remote Controller

DB93-15883B DB93-15883B DB93-15883B DB93-14643X

Cooling (T1) [Btu/h or W] 15 000/48 000/60 000 12 300 / 36 000 / 45 700 4 200 / 13 400 / 16 700 3 500 / 10 000 / 12 300 3 600 / 14 000 / 16 700 3 400 / 10 000 / 13 000 15000/48000/60000
Performance Cooling (T3) [Btu/h] 42 000 32 000 - - - - 42000
Heating [W] - - 4 000 / 15 500 / 20 000 4 200 / 11 200 / 14 000 - - -
Cooling (T1) [W] 890 / 4,050 / 6,600 1,100 / 3,030 / 4,000 900 / 4,320 / 5,900 1,100 / 3,700 / 4,900 820 / 5,040 / 5,600 880 / 3,270 / 4,900 890/3930/6600
Power Consump-
Cooling (T3) [W] 4,920 3,700 - - - - 4950
tion
Heating [W] - - 700 / 4,500 / 6,600 900 / 3,390 / 4,500 - - -
Cooling (T1) [Btu/h·W or W/W] 11.85 11.88 3.10 11.88 2.78 3.06 12.21
Cooling (T3) [Btu/h·W] 8.54 8.65 - 8.65 - - 8.48
EER/COP Heating [W/W] - - 3.44 - - - -
SEER [W/W] - - - A+ (5.8) - - -
SCOP[ [W/W] - - - A+ (4.1) - - -
Voltage / Frequency 230V, 60Hz 3Φ 380-415V, 50Hz 220-240V, 50Hz 3Φ 380-415V, 50Hz 220-240V, 50Hz 230V, 60Hz
Cooling (T1) [A] 4.7 / 18.2 / 28.5 5.7 / 13.5 / 18.3 1.9 / 6.8 / 9.5 4.3 / 16.4 / 23.2 1.6 / 7.8 / 9.0 4.4 / 14.4 / 22.5 4.7/17.2/28.5
Operating Current Cooling (T3) [A] 21.3 16.7 - - - - 21.1
Heating [A] - - 1.4 / 6.7 / 10.7 4.1 / 14.9 / 20.5 - - -
Indoor Unit [dBA] 51 / - 47 / - 51 / 51 47 / 47 51 / - 45 / - -
Noise
Outdoor Unit [dBA] 55 / - 51 / - 53 / 54 53 / 55 53 / - 51 / - -
Net Dimension Indoor Unit [mm] 610*1850*400 610*1850*400 610*1850*400 610*1850*400 610*1850*400 610*1850*400 610*1850*400
(WxHxD) Outdoor Unit [mm] 940*1420*330 940*1210*330 940*1210*330 940*998*330 940*1210*330 940*998*330 940*1420*330
Size
Shipping Dimension Indoor Unit [mm] 705*1963*493 705*1963*493 705*1963*493 705*1963*493 705*1963*493 705*1963*493 705*1963*493
(WxHxD) Outdoor Unit [mm] 995*1597*426 995*1388*426 995*1388*426 995*1096*426 995*1388*426 995*1096*426 995*1597*426
Indoor Unit [kg] 46 46 46 42 46 42 46
Net Dimension
Outdoor Unit [kg] 92 81 91 72 81 69 90
Weight
Indoor Unit [kg] 52 52 52 49 52 49 51
Shipping Dimension
Outdoor Unit [kg] 102 90 101 77 90 74 100
Indoor Fan Motor FMAF031SSA FMAF031SSA FMAF031SSA FMC9731SSC FMAF031SSA FMC9731SSC FMAF031SSA
Harness
Compressor UG5T450FXAJX UG5TK1450FJX UG5TK1450FJX UG8T300FUBJU UG5TK1450FJX UG8T300FUBJU UG5T450FXAJX
Specifications
Outdoor Fan Motor DAO335130ZRD ATB125FGA DAO335130ZRD DAO335130ZRD DAO335130ZRD
High Pressure 3/8" 3/8" 3/8" 3/8" 3/8" 3/8" 3/8"
Piping
Low Pressure 3/4" 5/8" 5/8" 5/8" 5/8" 5/8" 3/4"
Exterior Display LED LED LED LED LED LED LED
Refrigerant Type R410A R410A R410A R410A R410A R410A R410A
Factory Charging [g] 2600 2400 3500 3000 2900 2400 2600
Additional Refrigerant (for every 1m) [g] 30 30 50 50 30 30 30
Basic Piping Length [m] 5 5 5 5 5 5 5
Max. Piping Length [m] 75 75 75 50 75 50 50
Max. Level Difference [m] 30 30 30 30 30 30 30
Option Code 01146A-1900D7-278C00-370000 01146A-190096-276900-370000 01146A-1950C7-278C9B-370000 01146A-195085-276470-370000 01146A-1900C7-278C00-370000 01146A-190085-276400-370000 01144A-1900C7-279100-370010

2-3 Samsung Electronics Samsung Electronics 2-4

2-3 Accessory and Option Specifications

2-3-1 Filter
Item Descriptions Code-No. Remark

Basic/
Air Filter DB63-02928B
Water Washing

2-3-2 Accessory
Item Descriptions Code-No. Q'ty Remark

Manual
DB68-04872A 1
(AC048/036KNPPCC)

Manual DB68-06271A
1
(AC140/100KNPDEH) DB68-06272A

Manual
DB68-06270A 1
(AC048/036KNPDEC)

Wireless Remocon DB93-15883B 1

Battery DB47-90024A 2 Indoor Unit

Holder Remocon DB61-06087A 1

Rubber Cabi Hole DB73-00195A 1

Insulation Tube DB62-10944A 1

Insulation
DB72-50300A 1
(AC048/036KN*)

2-5 Samsung Electronics

 Product Specifications

Item Descriptions Code-No. Q'ty Remark

Insulation
DB72-50300C 1
(AC140/100KN*)

Holder Top DB61-40042B 1

Indoor Unit

Screw (L14) 6002-000538 4

Screw (L12) 6002-000231 4

Rubber leg DB73-20134A 4

Drain Plug DB67-00806A 1 Outdoor Unit

CAP Drain DB63-10355C 3

Samsung Electronics 2-6

3. Disassembly and Reassembly
 Necessary Tools
Item Remark

+Screw driver

Monkey spanner

Samsung Electronics 3-1

3-1 Indoor Unit

No Parts Procedure Remark

1 Indoor unit 1) Stop the operation of the air conditioner

and disconnect the main power supply.

2 Ass'y Inlet Part 1) Open the Ass'y Inlet and remove the
safety clips.

3 Ass'y Cover Control 1) Loosen one fixing screw of Ass'y Cover

Control. (Use +Screw driver) and detach
the cover.

2) Lift up the Ass'y Cover Control and detach

it by pulling the bottom outward.

3-2 Samsung Electronics

 Disassembly and Reassembly

No Parts Procedure Remark

3) Detach the connectors connected to

Panel-Outlet and the Motor Connector.

Horizontal blade

Panel Motor-In
Vertical blade

4 Ass'y Panel-outlet 1) Loosen the 7 fixing screws of

Ass'y Panel-Outlet and detach the
panel outlet by pushing upwards.
(Use +Screw driver)

Detaching Detaching
direction direction

Samsung Electronics 3-3

Disassembly and Reassembly

No Parts Procedure Remark

5 Ass’y Eva 1) Loosen the 2 fixing screws of Cover EVA

Top and detach the Top.

2) Loosen the 4 fixing screws of EVA.

3) Loosen the grounding screw.
4) Pull out the sensor cable.
5) Pull out the Bracket Pipe upward.
6) Pull the upper part of the Heat
Exchanger toward you and lift up the
Heat Exchanger to detach.

6 Ass'y Control In 1) Loosen the 1 fixing screw of Ass'y

Control.
2) Loosen the EVA grounding fixing screw.
3) Detach the Ass'y Control In by pushing
Detaching direction
it to the right.

❷
❶

3-4 Samsung Electronics

 Disassembly and Reassembly

No Parts Procedure Remark

7 Ass’y Blower 1) Loosen the 1 fixing screw of Guard Fan.

(Use +Screw driver)
Detaching
2) Push the Guard Fan in the arrow direction
direction and detach the guard.

3) Loosen the Blower nut clockwise and

pull the Blower toward you and detach
it. (Use a monkey spanner.)

Samsung Electronics 3-5

Disassembly and Reassembly

No Parts Procedure Remark

8 Ass’y Motor Blower 1) Loosen the 5 fixing screws of

Ass'y Duct Case and detach the case.
(Use +Screw driver)

Detaching direction

2) Loosen the 3 fixing screws of

Motor and ground fixing screw.
(Use a monkey spanner.)
(Remove the connectors before
detaching the Motor.)

9 Cover Top 1) Loosen the 3 fixing screws of

Cover-Top and detach the cover.
(Use +Screw driver),
(Screw : TH type2 M4, L10, BLK)

2) Lift up the rear of Cover Top and

detach it.

3-6 Samsung Electronics

 Disassembly and Reassembly

No Parts Procedure Remark

10 Ass'y Panel-Outlet 1) Panel-Outlet

Front side Rear side

2) As you push the 2 hooks on each side of

Panel outward, detach the bottom part
of Partition by lifting it toward you.

3) Detach the wire positioned with

Holder Wire.

4) Detach the wire positioned with

Holder Wire.

Samsung Electronics 3-7

Disassembly and Reassembly

No Parts Procedure Remark

11 Ass'y Panel-outlet 1) Loosen the 2 fixing screws of Case

Display PBA and detach the case.
- Seperate Display PBA (Use +Screw driver)

2) Unlink the fixing hook placed in the

middle of Case Display PBA.

3) Loosen the 2 fixing screws of PBA and

detach the PBA. (Use +Screw driver)

3-8 Samsung Electronics

 Disassembly and Reassembly

No Parts Procedure Remark

12 Ass'y Panel-outlet 1) Loosen the 8 fixing screws of

Holder Blade and detach the holder.
- Motor Step (Use +Screw driver)

2) Loosen the 2 fixing screws of

Step Motor and detach the motor.
(Use +Screw driver)

3) The detached Step Motor.

Samsung Electronics 3-9

3-2 Outdoor Unit

No Parts Procedure Remark

1 Cabi Front RH You must turn off the Power before

disassembly.

1) Unscrew and remove two mounting

screw in the Cabinet Front RH.
(Use +Screw Driver)

2 Cabi Top 1) Unscrew and remove 9 screws

on each side of the Cabinet-Top.
(Use +Screw Driver)

3 Cabi Install Front 1) Unscrew and remove 1 screw

in the Cabinet-Install Front.
(Use +Screw Driver)

4 Guard Cond 1) Pull the sensor from Guard Cond.

2) Unscrew and remove 4 screws

in the Guard Cond.
(Use +Screw Driver)

3-10 Samsung Electronics

 Disassembly and Reassembly

No Parts Procedure Remark

5 Cabi Back RH 1) Pull the sensor from Cabi Back RH.

2) Unscrew and remove 4 screws

on each side of the Cabinet Back RH.
(Use +Screw Driver)

6 Cabi Install Back 1) Unscrew and remove 1 screw

in the Cabinet-Install Back.
(Use +Screw Driver)

7 Cabi Front LF 1) Unscrew and remove 10 screws

in the Cabinet-Front LF.
(Use +Screw Driver)

8 Fan 1) Turn 2 mounting nuts as shown in

the picture and remove it.
(Use Adjustable Wrench)

Samsung Electronics 3-11

Disassembly and Reassembly

No Parts Procedure Remark

9 Motor 1) Separate the Fan Propeller.

2) Unscrew and remove the 8 Motor

mounting
screws. (Use +Screw Driver)

3) Disconnect the Motor wire From

Ass'y Control Out.

10 Bracket Motor 1) Unscrew and remove 2 mounting

screws in Bracket Motor.
(Use +Screw Driver)

11 Control Out 1) Disconnect 4 Connecters From

Ass'y Control Out.

2) Unscrew and remove 1 mounting

screw in Control Out.
(Use +Screw Driver)

3) Separate Ass'y Control Out.

3-12 Samsung Electronics

 Disassembly and Reassembly

No Parts Procedure Remark

12 Assy 4way Valve 1) Purge the Coolant first.

2) Unscrew and remove 2 mounting

screws in Service Valve. (Use +Screw
Driver)

3) Separate the pipe from the

Entrance/Exit using a welder.

When removing the compres-

sor, Heat Exchanger, and Pipe,
purge the Coolant inside the
Compressor completely and
remove the pipe with a welding
flame.

13 Assy EEV Valve 1) Unscrew and remove 2 mounting

screws in Service Valve.
(Use +Screw Driver)

2) Separate the pipe from the Entrance/

Exit using a welder.

Samsung Electronics 3-13

4. Troubleshooting

4-1 Indoor Display Error and Check Method

4-1-1 Indoor unit LED display at error detecting

- Thins to check before diagnosis

Product operation
Diagnosis
Display Explanation Check list
Indoor Outdoor Method
COMP
FAN FAN

Indoor and Outdoor unit ● Check the connection wire. Operation Operation Operation
communication Error ● Change the Main PCB. OFF OFF OFF

Indoor unit room

● Change the temperature sensor. Operation Operation Operation
temperature sensor
(Wire type) OFF OFF OFF
SHORT/OPEN

Indoor unit Eva_in sensor ● Change the temperature sensor. Operation Operation Operation
SHORT/OPEN (Wire type) OFF OFF OFF

● Check the connection wire.

● Change the Fan motor.
● Change the Main PCB.
Indoor unit ※ BLDC Motor is used as Fan Motor, Operation Operation Operation
Fan motor Error therefore if you connect or disconnect OFF OFF OFF
the connector while the power is still
on, it may get damaged. Make sure to
turn off the power before performing
any operation.

Operation Operation Operation

EEPROM ERROR ● Change PCB.
OFF OFF OFF

EEPROM Option ● Input option. Operation Operation Operation

Setting Error - Cannot input KEY OFF OFF OFF

Thermal Fuse Error Operation Operation Operation

● Check the connection wire.
(TERMINAL BLOCK) OFF OFF OFF

Duplicated address Operation Operation Operation

● Check address setting of Indoor units.
setting error OFF OFF OFF

● Check indoor unit's quantity setting

No response error of in outdoor unit. Operation Operation Operation
address from indoor unit ● Check electrical connection and set- OFF OFF OFF
ting.

Samsung Electronics 4-1

Troubleshooting

4-2 Outdoor Trouble shooting

The table below give indication about self diagnostic routine. Some of error code requires activities exclusively
for Authorized Service Center.

Outdoor unit
If an error occurs during the operation, it is displayed on the outdoor unit PCB LED, both MAIN PCB and
INVERTER PCB.

No. Error Code Meaning Remarks

Error due to repeated address setting(when 2 or more devices has
1 E108 Check on repeated indoor unit main address
same address within the network)
2 E121 Error on indoor temperature sensor of indoor unit(Short or Open) Indoor unit Room Thermistor Open/Short
3 E122 Error on EVA IN sensor of indoor unit(Short or Open) Indoor unit EVA_IN Thermistor Open/Short
4 E123 Error on EVA OUT sensor of indoor unit(Short or Open) Indoor unit EVA_OUT Thermistor Open/Short
"Indoor unit Float Switch Open/Short Drain Pump
5 E153 Error on float switch (2nd detection)
operation Check"
6 E154 RPM feedback error of indoor unit Check on indoor unit indoor Fan operation
7 E162 Outdoor unit EEPROM Read/Write error (H/W) Check Outdoor EEPROM PBA
8 E163 Outdoor unit EEPROM Read/Write error (Option) Check Outdoor EEPROM Data
Thermal Fuse Open Check of indoor unit Terminal
9 E198 Error on thermal fuse of indoor unit (Open)
Block
"Communication error between indoor and outdoor
10 E201 unit(Installation number setting error repeated Check indoor quantity setting in outdoor
indoor unit address,indoor unit communication cable error)"
"Communication error between indoor and outdoor
Check electrical connection and setting between
11 E202 unit(Communication error on all indoor unit,
indoor unit and outdoor unit
outdoor unit communication cable error)"
Communication error on all PBA within the outdoor unit
12 E205 -
C-Box,communication cable error
E206-C002 : Fan PBA communication error, E206-C003 : INV PBA
13 E206 -
communication error
14 E221 Error on outdoor temperature sensor (Short or Open) Check Outdoor sensor Open / Short
15 E231 Error on outdoor COND OUT sensor (Short or Open) Check Cond-Out sensor Open / Short
Error on discharge temperature sensor of compressor 1 (Short or
16 E251 Check Discharge sensor Open / Short
Open)
17 E320 Error on OLP sensor (Short or Open) Check OLP sensor Open / Short
18 E346 Error due to operation failure of Fan2 FAN2 error
19 E347 Motor wire of Fan2 is not connected FAN2 error
20 E348 Lock error on Fan2 of outdoor unit FAN2 error
21 E353 Error due to overheated motor of outdoor unit's Fan2 FAN2 error
22 E355 Error due to overheated IPM of Fan2 FAN2 error
23 E378 Error due to overcurrent of Fan2 FAN2 error
24 E386 Over-voltage/low-voltage error of Fan2 FAN2 error
25 E387 Hall IC connection error of Fan2 FAN2 error
26 E389 V-limit error on Fan2 of compressor FAN2 error
27 E391 Error due to DataFlash of Fan2 FAN2 error
28 E393 Output current sensor error of Fan2 FAN2 error

4-2 Samsung Electronics

 Troubleshooting

No. Error Code Meaning Remarks

29 E396 DC voltage sensor error of Fan2 FAN2 error
30 E399 Heat sink temperature sensor error of Fan2 FAN2 error
31 E403 Compressor down due to freeze protection control Check Outdoor Cond.
32 E404 System stop due to overload protection control Check Comp. when it start
33 E416 System stop due to discharge temperature -
1. Check if the service valve is open
2. Check for refrigerant leakage(pipe connections,
heat exchanger) and charge refrigerant if
necessary
34 E422 Blockage detected on high pressure pipe
3. Check if there's any blockage on refrigerant
cycle(indoor unit/outdoor unit)
4. Check if additional refrigerant has been added
after pipe extension
35 E425 Reverse phase or open phase Check whether 3 phase is reversed or opened.
36 E440 Heating mode restriction due to high air temperature HEATING
37 E441 Cooling mode restriction due to low air temperature COOLING
38 E446 Error due to operation failure of Fan1 FAN1 error
39 E447 Motor wire of Fan1 is not connected FAN1 error
40 E448 Lock error on Fan1 of outdoor unit FAN1 error
41 E452 Error due to ZCP detection circuit problem or power failure -
42 E453 Error due to overheated motor of outdoor unit's Fan1 FAN1 error
43 E455 Error due to overheated IPM of Fan1 FAN1 error
44 E458 Fan speed error FAN1 ERROR
45 E461 Error due to operation failure of inverter compressor -
46 E462 System stop due to full current control -
47 E463 Over current trip / PFC over current error Check OLP sensor
48 E464 IPM Over Current(O.C) IPM
49 E465 Comp. Over load error -
50 E466 DC-Link voltage under/over error Check AC Power and DC Link Voltage
Error due to abnormal rotation of the compressor or unconnected
51 E467 Check Comp wire
wire of compressor
52 E468 Error on current sensor (Short or Open) Check Outdoor Inverter PBA.
53 E469 Error on DC-Link voltage sensor (Short or Open) -
Outdoor EEPROM checksum error between MAIN and INVERTER
54 E471 Check Outdoor EEPROM PBA
(ACKXAPNH)
55 E472 AC Line Zero Cross Signal out -
56 E473 Comp Lock error -
57 E474 Error on IPM Heat Sink sensor of inverter 1 (Short or Open) heck Outdoor Inverter PBA
58 E475 Error on inverter fan 2 FAN2 ERROR
59 E478 Error due to overcurrent of Fan1 FAN1 error
60 E484 PFC Overload (Over current) Error Check Outdoor Inverter PBA.
61 E485 Error on input current sensor of inverter 1 (Short or Open) Check Outdoor EEPROM PBA
62 E486 Over-voltage/low-voltage error of Fan1 FAN1 error

Samsung Electronics 4-3

Troubleshooting

No. Error Code Meaning Remarks

63 E487 Hall IC connection error of Fan1 FAN1 error
64 E489 V-limit error on Fan1 of compressor FAN1 error
65 E491 Error due to DataFlash of Fan1 FAN1 error
66 E493 Output current sensor error of Fan1 FAN1 error
67 E496 DC voltage sensor error of Fan1 FAN1 error
68 E499 Heat sink temperature sensor error of Fan1 FAN1 error
69 E500 IPM over heat error on inverter 1 Check Outdoor Inverter PBA.
70 E508 Smart install is not installed -
71 E554 Gas leak detected Check the refrigerant
Error due to mismatching capacity of indoor and outdoor Check the indoor and Outdoor unit
72 E556
unit Capacity
Option code miss matching among the indoor units (only
73 E557 Check the indoor option code
for DPM)
Outdoor EEPROM checksum error between MAIN
74 E590 and INVERTER (ACJXAFKH, ACJXAFNH, -
ACJXAPNH)
75 E660 Inverter Boot Code error -

4-4 Samsung Electronics

 Troubleshooting

4-3 Troubleshooting by symptoms

4-3-1 Communication error after finishing tracking (E202)
1. Check items
1) Is the communication cable short/open?
2) Is there a response from the indoor unit PCB?

2. Check procedure

No Check the communication cable and

Is there a response from the indoor unit PCB?
replace the indoor unit PCB?

Yes

Is the power/communication No Connect the power/communication

cable connected correctly? cable correctly.

Yes

Remove the communication cable

connecting the outdoor unit to indoor unit,
and measure the signal on LINE 2 of the
outdoor unit with a scope

In this case, is the

voltage waveform between the lines square No
wave with amplitude over ±0.7V as shown
in the following picture?

Check the communication

Yes cable in each PCB
and replace the PCB
Reconnect the cable connecting
the outdoor unit to the indoor unit
and restart the unit.
If the communication still doesn’t work,
replace the indoor unit PCB and
outdoor unit PCB in order of mention.

Good
Bad

+0.7V

-0.7V

cf.) If there is no oscillo scope, it can be replaced multimeter instead of osillo scope.

4-14 Samsung Electronics

Samsung Electronics 4-5

Troubleshooting

4-3-2 Outdoor's service valve(Clog)

Wire remote controller display E422

Symptom Clogging of outdoor's service valve

Failure Valve clog

Is the outdoor service Check the normal of EVA-IN

Was lacking in refrigerant?
valve clogged? No No TEMP SENSOR.

Yes Yes

Open the outdoor's service valve Refrigerant Charge.

4-6 Samsung Electronics

 Troubleshooting

4-3-3 No Power(completely dead) - Initial diagnosis

Outdoor unit is not powered on – Initial diagnosis (1phase)
1. Check items
1) Is the power supply voltage 220V?
2) Is the AC power connected correctly?
3) Are the LEDs in the main PCB and inverter PCB of the outdoor unit ON?
4) Is the input power voltage of the indoor unit 220V?
5) Is the wired remote controller connected correctly?

2. Check procedure

Turn off the main power switch

(circuit break of power outlet) and turn on
again after 30 seconds.

Is the outdoor unit power No

Check the input power
supply (L-N) 220V?

Yes

Is the outdoor unit power No

Check the connection of the terminal block
voltage (L-N) 220V?

Yes

Is the voltage between

No
the terminal 2 (~) and 4 (~) of the Replace the inverter PBA
bridge diode 220V?

Yes

No
Is the fuse connected? Replace the fuse

Yes

No
Is the resistance value of R001 200Ω? Replace the inverter PBA

Yes

Cont.

Samsung Electronics 4-7

Troubleshooting

Outdoor unit is not powered on – Initial diagnosis (1phase) (cont.)

Cont.

Yes

Is the reactor connector No

Connect the reactor
connected correctly?

Yes

Replace the PBA.

4-8 Samsung Electronics

 Troubleshooting

Outdoor unit is not powered on – Initial diagnosis ( 3phase)

1. Check items:
1) Is the power supply voltage 380V?
2) Is the AC power connected correctly?
3) Are the LEDs in the main PCB and inverter PCB of the outdoor unit ON?
4) Is the input power voltage of the indoor unit 220V?
5) Is the wired remote controller connected correctly?

2. Troubleshooting procedure

Turn off the main power switch

(circuit break of power outlet) and turn on again
after 30 seconds.

Is the outdoor unit power No

Check the input power
supply (N-R, N-S, N-T) 220Vac?

Is the outdoor unit power No Check connection of the outdoor unit

voltage (L-N) 220Vac? terminal block

Is the indoor unit power supply No Check the connection wires and
voltage (L-N) 220Vac? connectors of the indoor and outdoor units

Is the indoor unit power supply No Replace the PCB of the indoor unit if
voltage (V1-V2) 12Vdc? the PCB (Transformer, fuse, pcd, etc.) fails

Does the air conditioner No

operate when pressing ON/OFF button of the Replace the wired remote controller
wired remote controller?

Cont.

Samsung Electronics 4-9

Troubleshooting

Outdoor unit is not powered on – Initial diagnosis ( 3phase) (cont.)

Cont.

Yes

Are the option DIP switches No

inside the wired remote controller configured Reconfigure the option DIP switches
correctly?

Yes

Is there an error No Check the system depending

message displayed on the wired remote on the error display
controller display?

Yes

Check the target temperature

4-10 Samsung Electronics

 Troubleshooting

4-3-4 E102 : Communication error between indoor and outdoor unit

E201 : Unit quantity miss matching beween Indoor and Outdoor
E202 : Abnormal state, no communication between Indoor and Outdoor Main PCB

E203 : 1min Time out of communication error(Main↔Inverter)
1. Checklist :
1) Is the communication cable between the indoor unit and outdoor unit connected correctly?
2) Isn’t the power cable and communication cable wiring error?

2. Troubleshooting procedure

Restart after power off.

Is the communication error No

Terminate the service.
occurred again?

Yes

Isn't the power cable and No

Correct the wrong wiring.
communication cable wiring error?

Yes

Is the connection of No Correct the connection of

communication cable normal? communication cable.

Yes

Replace the outdoor unit PCB.

Samsung Electronics 4-11

Troubleshooting

4-3-5 External Sensor Error (Error Code: E221, E231, E251, E320)
1. Test Item
1) Check the connection of the temperature sensor connector. Error Code Description
2) Check the resistance value of the temperature sensor. E221 Error of the temperature sensor of the outdoor unit
E231 Error of the COND. sensor of the outdoor unit
E251 Error of the discharge sensor of the outdoor unit
2. Check procedure E320 Error of the OLP sensor of the outdoor unit

Power OFF

Is the temperature sensor connector No Is the temperature sensor connector

connected? reconnected?

Yes

Replace the temperature sensor, →

Is the temperature No Power ON. →
sensor-measuring resistance similar to the After confirming the state is normal, end the service.
table on the left?

(Example) COND. sensor/outdoor unit temperature sensor measuring resistance value by temperature: E231, E221

Current tem- Resistance Current tem- Resistance e.g.) Room temperature: 26℃
perature (°C) (KΩ) perature (°C) (KΩ) - Resistance: 10.28 KΩ
Yes 70 4 20 10
60 5 10 20
50 6 0 30
40 7 -10 40
30 8

(Example) OLP sensor/discharge temperature sensor measuring resistance value by temperature: E320, E251.

Current tem- Resistance Current tem- Resistance e.g.) Room temperature: 21℃
perature (°C) (KΩ) perature (°C) (KΩ) - Resistance: 205.4 KΩ
80 40 30 180
70 50 20 220
60 60 10 320
50 90 0 550
40 110

Does the same error occur again No After confirming the state is normal,
after power is on? end the service.

Yes

Replace the outdoor unit PBA. →

Power is on. → After confirming the state is
normal, end the service.

4-12 Samsung Electronics

 Troubleshooting

4-3-6 E403 : Freezing control causes comp. down

Outdoor unit display E403

Criteria •All the operating indoor machines do not reach -4°C for more than five minutes

•Check if the indoor FAN/MOTOR operates normally.

•Check if the indoor EEV operates normally.
Cause of problem
•Check the indoor heat Exchanger's IN/OUT sensor.
•Check for clogging in the suction area of the indoor machine.

1. How to check

No
The indoor FAN/MOTOR operates normally? Check the indoor fan.

Yes

No
The indoor EEV operates normally? Check the EEV.

Yes

No
The indoor heat Exchanger sensor displays the Same as when checking other temp sensors.
temperature ok?

Yes

Check for clogging in the suction area of the

indoor machine.

Samsung Electronics 4-13

Troubleshooting

4-3-7 E416 : Dischage temperature sensor error

Outdoor unit display E416

Criteria •The compressor temperature above 110°C.

•Insufficient coolant.
•Clogging in the outdoor machine's solenoid valve.
•Clogging in the sub valve.
Cause of problem
•Malfunctioning exhaust gas temp sensor.
•Clogging in the pipeline and the filter.
• Liquid EEV damaged.

1. How to check

The sensor's resistance normal? No

Check the amount of coolant.
(Refer to E251.)

Yes

Test operation

Connect S-net to vacuum.

(Forceful)

All the sub valves open? Open the sub valve.

The outdoor/indoor EEV operates normally? Check the EEV.

Yes

Clogging in the pipeline? Check the pipeline.

(ex-filter)

Yes

Check the amount of coolant.

4-14 Samsung Electronics

 Troubleshooting

4-3-8 E440, E441 : Abnormal outside temperature halts operation of the compressor

E440 (No heater operation with the outside temperature above 30°C.)
Outdoor unit display
E441 No AC operation with the outside temperature below -10°C.)

Criteria •The compressor temperature above 110°C.

E440: If the outside temperature is above 30°C, operation of the indoor heater with a
remocon causes this error.
Cause of problem
E441:The indoor machine remocon ON signal. If the outside temperature is below -10°C
before the AC runs, this error occurs.

Cause of problem •OLP SENSOR temp above Trip_Dis.

1. How to check
The above malfunction codes do not indicate a malfunction of the product. All you have to do is change the temperature suitably for
the limits shown in the manual. When the product malfunctions, if the actual situation does not match the above diagnosis, measure
the temperature of incoming air with S-net to see if the measurement is the same as the actual outdoor temperature. If not, replace
the temperature sensor.

Samsung Electronics 4-15

Troubleshooting

4-3-9 Outdoor unit BLDC Fan1 or Fan2 error (E458 : Fan1 error, E475 : Fan2 error)
1. Checklist :
1) Isn’t the fan locked?
2) Is the sensor placed correctly?
3) Does the both terminal of sensor satisfy the resistance value in accordance with temperature?
4) Is the resistance value of sensor connection pull_up correct?

2. Troubleshooting procedure

Isn't the Fan locked? Remove the Fan lock.

Yes
No

No
Is the connector connected correctly? Connect the connector.

Yes
No
Is the color of Fan wire matched correctly? No
Replace the Fan.

Yes
Replace the PCB. Normal operation

Exit

4-16 Samsung Electronics

 Troubleshooting

4-3-10 E461: Compressor start error

E467: Compressor wire missing error
1. Checklist :
1) Is the connection of cable for the compressor and power?
2) Is the interphase resistance of compressor normal?

2. Troubleshooting procedure

Restart after power off.

No
Is the restart error occurred again? Terminate the service.

Yes

Is the interphase resistance value of No

Replace the compressor.
compressor(u↔v, v↔w, w↔u) normal?

Yes

Is the compressor body and No

Replace the compressor.
interphase resistance insulated?

Yes

Is the connection cable for the No

Correct the cable connection.
compressor and power terminal normal?

Yes

Replace the PCB.

Samsung Electronics 4-17

Troubleshooting

4-3-11 E462 : Current protection control causes comp. down

E484 : PFC overload error

Outdoor unit display E462,E484

Criteria • The outdoor machine input current above I_Trip.
•Check the compressor input voltage. (error for low voltage.)
Cause of problem
•Check the overcurrent option setting.

1. How to check

No
Compressor input voltage supplied ok? Check the input power terminal.

No
Overcurrent option setting ok? Correct the overcurrent setting.

Yes

Finished inspections

4-18 Samsung Electronics

 Troubleshooting

4-3-12 E463 : OLP protection control caused comp. down

Outdoor unit display E463

Criteria • OLP SENSOR temp above Trip_Dis.
•See if the sub valve is open.
Cause of problem •Check the amount of coolant.
• Check the OLP sensor.

1. How to check

The sensor's resistance normal? No

Replace the OLP sensor
(Refer to E20.)

Yes

Test operation

Connect S-net to vacuum. (forceful)

No
All the sub valves open? Open the sub valve.

Yes

No
The outdoor/indoor EEV operates normally? Check the EEV.

Yes

No
Clogging in the pipeline? Check the pipeline.
(ex-filter)

No

Check the amount of coolant.

Samsung Electronics 4-19

Troubleshooting

4-3-13 E464 : O.C. (Over Current) error

1. Checklist :
1) Is the refrigerant charged properly?
2) Does the compressor rotate normally?(Reverse rotation, Locking etc.)
3) Is connection of compressor wire normal?
4) Is compressor motor normal?(Insulation, Coil resistance etc.)
5) Does a temporary cycle overload condition happened?

2. Troubleshooting procedure

No
Is the installation of outdoor unit good? Reinstall and remove the obstruction

Yes

No
Is the installation of indoor unit good? Reinstall and remove the obstruction

Yes

No
Are the service valves full opened? Open valve screw to the end.

Yes

Does the compressor wire connected to the No

Correct the compressor wire connection
compressor normally?

Yes

Is insuration resistance between each No

compressor terminal and body normal? Replace the compressor

Yes

No
Does the compressor rotate normally? Replace the compressor

Yes

Did AC power voltage interruption happen Yes

Check AC power source
during the compressor in operation?

No

Replace INVERTER PCB

4-20 Samsung Electronics

 Troubleshooting

4-3-14 E466: DC Link Over voltage/ Low voltage error

1. Checklist :
1) Is the power voltage normal?(Lightning, Power interruption etc.)
2) Is AC Power cable connection normal?(Detaching the wire)

2. Troubleshooting procedure

Is the AC Power cable connection to the outdoor No Check and reconnecting the
unit terminal block good? AC power cable wire

Yes

No Check and reconnecting the reactor wire

Is the connection of reactor terminal good?
at the TAB terminal

Yes

Yes
Are the FUSEs on EMI PCB blown? Replace the blown FUSE

No

Push the center bar of M/C and mesure the resis-

tance of each contact.

Is each contact resistance normal? No

Replace M/C
(less than 0.1ohm)

Yes

Yes
Does the error reappear frequently Replace INVERTER PCB

No

The cause of this error may be power source trou-

ble as like power interruption.
Check the power source.

Samsung Electronics 4-21

Troubleshooting

4-3-15 Pipe Blocking Error (Error Code: E422)

1. Test Item
1) Check the open state of the outdoor unit service valve.
2) Check the connection of the pipe.
3) Check the operation of the EEV.
4) Check the refrigerant leakage.
5) Check the connection of the indoor unit PBA EVA sensor.
6) Check the fault in the indoor unit EVA sensor.

2. Check procedure

If there occurs E422 error, reset the power and

check in the following order.

Check the opening of the outdoor unit No Check whether the pipe is empty and open all
service valve. the service valves on the gas and liquid pipes.

Yes

Check the connection of Change and connect the pipes immediately

No
the pipes (such as disconnection, bent, or and empty the pipes and then open the service
cross-connection with other sets). valves.

Yes

Check the replacement of the EEV (body/coil)

Check the EEV operation and No
and the refrigerant leaking part. After that,
the refrigerant leakage.
recharge.

Yes

Check the temperature value through

Check the fault in the indoor unit EVA No
S-NET, etc. and then if there is a fault, replace
sensor and the connection state.
and reconnect.

4-22 Samsung Electronics

 Troubleshooting

4-3-16 The others

1. E465 : Compressor over load error
• If a compressor works improperly, change the compressor and check if it works properly.
 If a compressor is normal, check the assembly between Heatsink-Inverter PBA. If it is fine, change Inverter PBA.

2. E468 : Current sensor error

• Check EEPROM data.
• Check PCB operates properly.

3. E471 : Oudoor EEPROM error

• Upload EEPROM on Outdoor unit Main PBA.

4. E474 : IPM(IGBT Module) or PFCM Temperature sensor Error

• E500 : IPM is over heated
• Check IPM is well assembled to heatsink
• Check whether inlet port is clogged.
• Change IPM if it is defective one

5. E554 : Gas leak error

• Check refrigerant charge
• Check Indoor EVA sensor
• Check Service valve is open.
• Check the pipes and wires correctly connected.

6. E556 : Capacity miss match between indoor and outdoor

• Check the model name of indoor and outdoor unit and set option code on indoor unit again.

7. Outdoor overload protection control (at the stop of the compressor.) : E404
• Check whether the fan and the motor operate normally.
• Check the operation of EEV.
• Check the temperature sensor of the indoor unit heat Exchanger.
• Check the indoor unit inlet blocking.

Samsung Electronics 4-23

Troubleshooting

4-3-17 Setting an indoor unit installation option

█ Setting an indoor unit installation option(suitable for the condition of each installation location)

1. Check whether power is supplied or not.

- When the indoor unit is not plugged in, there should be additional power supply in the indoor unit.
2. The panel(display ) should be connected to an indoor unit to receive option.
3. Set the installation option according to the installation condition of an air conditioner.
- The default setting of an indoor unit installation option is 02000-100000-200000-300000.
4. Set the indoor unit option by wireless remote controller.
SEG1 SEG2 SEG3 SEG4 SEG5 SEG6

0 2 RESERVED RESERVED RESERVED RESERVED

SEG7 SEG8 SEG9 SEG10 SEG11 SEG12

1 RESERVED RESERVED RESERVED RESERVED RESERVED

SEG13 SEG14 SEG15 SEG16 SEG17 SEG18

External control
2 External control RESERVED RESERVED RESERVED
output
SEG19 SEG20 SEG21
Heating setting
3 RESERVED
compensation

▶ Heating setting compensation (SEG21) is applied to Heat pump model only.

4-24 Samsung Electronics

5. PCB Diagram

5-1 Indoor unit

5-1-1 Main PCB

▶ This Document can not be used without Samsung’s authorization.

9 10 8 7 6 5 4 1 2 3

Samsung Electronics 5-1

PCB Diagram and Parts List

① CN02-CTRL-POWER-FAN ② CN01-AC LOAD ③ CN41-EVA IN/ROOM ④ CN81-ERROR/COMP

#1 : DETECT_OV_UV #1 : - #1 : ROOM-TH #1 : DC 12V
#2 : INRUSH_RY #2 : - #2 : GND #2 : ERROR_Check
#3 : PWR_RY #3 : FAN LOW_COMP #3 : EVA IN-TH #3 : DC 12V
#4 : Zerocrossing #4 : FAN HIGH_FAN #4 : GND #4 : Comp_Chec
#5 : RPM_Feedback #5 : FAN TURBO_4WA
#6 : FAN_PWM
#7 : BLDC_PS
#8 : DC 5V
#9 : GND
#10 : DC 12V
⑤ CN83-EXT_CTRL ⑥ CN903-DISPLAY ⑦ CN45-SPI ⑧ CN302-COMM
#1 : GND #1 : DC 12V #1 : GND #1 : F1
#2 : External control #2 : GND #2 : GND #2 : F2
#3 : PANEL_TXD #3 : DC 12V
#3 : SPI_Control #4 : GND
#4 : PANEL_RXD
#5 : REMOCON_RXD #4 : - #5 : F3
#6 : F4
#6 : DC 5V
#7 : KEY_INT

⑨ CN61-STEP UP/DOWN ⑩ CN63-STEP LEFT/RIGH

#1 : DC 12V #1 : DC 12V
#2 : UB_12B' #2 : UB_12B'
#3 : UB_12A' #3 : UB_12A'
#4 : UB_12B #4 : UB_12B
#5 : UB_12A #5 : UB_12A

5-2 Samsung Electronics

 PCB Diagram and Parts List

5-1-2 Power PCB

▶ This Document can not be used without Samsung’s authorization.

2 5 4 1 3

① CN02-MAIN PBA ② CN71-POWER ③ CN501-BLDC MOTOR ④ CN02-MAIN PBA ⑤ CN72-AC LOAD

#1 : DC12V #1 : L #1 : DC310V #1 : FAN_TURBO_4WAWY_12 #1 : N
#2 : GND #2 : NC #2 : NC #2 : FAN_HIGH_FAN_12 #2 : NC
#3 : DC5V #3 : N #3 : AGND #3 : FAN_LOW_COMP_12 #3 : COMPRESSOR
#4 : BLDC_PS #4 : NC #4 : DC15V #4 : HEATER_CTRL_12A #4 : OUTDOOR FAN MOTOR
#5 : FAN_PWM #5 : EARTH #5 : Vsp #5 : HEATER_ZC #5 : OUTDOOR 4WAY V/V
#6 : RPM_FEEDBACK #6 : RPM_FEEDBACK
#7 : ZEROCROSS
#8 : PWR_RY_12
#9 : INRUSH_RY_12
#10 : DETECT_OV/LV

Samsung Electronics 5-3

PCB Diagram and Parts List

5-1-3 Panel PCB

▶ This Document can not be used without Samsung’s authorization.

2 1 3

① CN903-DISPLAY ② CN31-DOWNLOAD(MICOM) ③ CN01-DOWNLOAD(Touch-IC)

#1 : DC 12V #1~#20 : Download #1 : DC 5V
#2 : GND #2 : GND
#3 : PANEL_TXD #3 : -
#4 : PANEL_RXD #4 : I2C
#5 : REMOCON_RXD #5 : I2C
#6 : DC 5V
#7 : KEY_INT

5-4 Samsung Electronics

 PCB Diagram and Parts List
5-2 OUTDOOR

5-2-1 MAIN PCB Diagram

1 2 3 4 5 6 7 8 9 10 11

Samsung Electronics 5-5

PCB Diagram and Parts List

µ CN101 - POWER µ CN702 - 4WAY µ CN403 - SENSOR µ CN306 - DOWNLOAD

#1 : L #1 : N #1 : OUT TEMP #1 ~ #20 : DOWNLOAD
#2 : N.C #2 : N.C #2 : GND
#3 : N #3 : 4WAY V/V SIGNAL #3 : COND TEMP
#4 : GND
#5 : DISCHARGE TEMP
#6 : GND
#7 : OLP TEMP
#8 : GND

µ CN802 - EEV µ CN806 - EEPROM µ CN305 - COMM INV µ CN401 - LOW PRESSURE
#1 ~ #4 : EEV SIGNAL #1 ~ #7 : EEPROM #1 : COMM SIGNAL #1 : N.C
#5,#6 : DC 12V #2 : COMM SIGNAL #2 : SENSOR SIGNAL
#3 : GND #3 : GND
#4 : DC 5V #4 : DC 5V
#5 : DC 12V
#6 : COMM SIGNAL

µ CN402 - HIGH PREWSSURE µ CN303 - COMM INDOOR µ CN103 - EARTH

#1 : SENSOR SIGNAL #1 ~ # 2: COMM SIGNAL #1 : EARTH
#2 : N.C
#3 : GND
#4 : DC 5V

5-6 Samsung Electronics

 PCB Diagram and Parts List

5-2-2 INVERTER PCB

 AC048KXQPCC

8 2 1 4 3 7 6 5

① Reactor - A1/B1 ② Reactor - A2/B2 ③ CN351 - Communication ④ CN551 - Downloader

# Reactor - A1 : WHT # Reactor - A2 : BLK #1 : RXD #1 : RXD_INV
# Reactor - B1 : WHT # Reactor - B2 : BLK #2 : TXD #2 : TXD_INV
#3 : GND #3 : BOOT_INV
#4 : DV5V #4 : TDO_INV
#5 : DV12V #5 : TCK_INV
#6 : INV, SMPS Signal #6 : TDI_INV
#7 : TMS_INV
#8 : nTRST
#9 : GND
#10~#11: 5V
#14 #18 #19 : ENC
#17 : GND
#20 : SUB

⑤ CN901-FAN1 ⑥ CN911-FAN2 ⑦ CN401-COMP. ⑧ L, N - 220V Power

#1 : DC310V #2 : N.C #1 : DC310V #2 : N.C # 1 : COMP. U-phase(RED) # 1 : L-phase(BRN)
#3 : GND #4 : DV15V #3 : GND #4 : DV15V # 2 : COMP. V-phase(BLU) # 2 : N-phase(SKY)
#5 : FAN RPM #5 : FAN RPM # 3 : COMP. W-phase(YEL)
#6 : FAN RPM Feedback #6 : FAN RPM Feedback

Samsung Electronics 5-7

PCB Diagram and Parts List

 AC036KXQPCC / AC100KXADEH / AC036KXADEC

8 2 1 4 3 7 6 5

① Reactor - A1/B1 ② Reactor - A2/B2 ③ CN351 - Communication ④ CN551 - Downloader

#Reactor -A1 : WHT #Reactor -A2 : BLK #1 : RXD #1 : RXD_INV
#Reactor -B1 : WHT #Reactor -B2 : BLK #2 : TXD #2 : TXD_INV
#3 : GND #3 : BOOT_INV
#4 : DV5V #4 : TDO_INV
#5 : DV12V #5 : TCK_INV
#6 : INV, SMPS Signal #6 : TDI_INV
#7 : TMS_INV
#8 : nTRST
#9 : GND
#10~#11: 5V
#14 #18 #19 : ENC
#17 : GND
#20 : SUB

⑤ CN901-FAN1 ⑥ CN911-FAN2 ⑦ CN401,402,403-COMP. ⑧ L, N - 220V Power

#1 : DC310V #2 : N.C #1 : DC310V #2 : N.C CN401 : COMP. U-phase(RED) # 1 : L-phase(BRN)
#3 : GND #4 : DV15V #3 : GND #4 : DV15V CN402 : COMP. V-phase(BLU) # 2 : N-phase(SKY)
#5 : FAN RPM #5 : FAN RPM CN403 : COMP. W-phase(YEL)
#6 : FAN RPM Feedback #6 : FAN RPM Feedback

5-8 Samsung Electronics

 PCB Diagram and Parts List

 AC140KXADGH / AC048KXADGC

2 1 8 6 5 3 7
4

① RST - AC Power 3 Phase ② CN152 - AC Power ③ CN351 - Communication ④ CN551 - Downloader

#R : AC 380~400V : WHT #1-#3 : AC 220~240V #1 : RXD, #2 : TXD #1 : RXD_INV
#S : AC 380~400V : BRN #3 : GND, #4 : DC 5V #2 : TXD_INV
#T : AC 380~400V : BLK #5 : DC 12V, #6 : INV. SMPS Signal #3 : BOOT_INV
#4 : TDO_INV
#5 : TCK_INV
#6 : TDI_INV
#7 : TMS_INV
#8 : nTRST
#9 : GND
#10~#11: 5V
#14 #18 #19 : ENC
#17 : GND
#20 : SUB

⑤ CN901-FAN1 ⑥ CN911-FAN2 ⑦ CN400-COMP. ⑧ CN101- Reactor

#1 : DC310V #2 : N.C #1 : DC310V #2 : N.C #1 : COMP. U-phase(RED) #1~#2 : Reactor
#3 : GND #4 : DV15V #3 : GND #4 : DV15V #2 : COMP. V-phase(BLU)
#5 : FAN RPM #5 : FAN RPM #3 : COMP. W-phase(YEL)
#6 : FAN RPM Feedback #6 : FAN RPM Feedback

Samsung Electronics 5-9

PCB Diagram and Parts List

5-2-3 EMI PCB

 AC048KXQPCC / AC036KXQPCC / AC100KXADEH / AC036KXADEC

2 3 1

① L1-AC POWER L phase ② N1-AC POWER N phase ③ CN01-AC POWER

L1 : BRN N1 : SKY-BLU #1-#3 : AC 220~240V

5-10 Samsung Electronics

 PCB Diagram and Parts List

 AC140KXADGH / AC048KXADGC

1 2

① RST-AC POWER 3phase ② CN100-AC POWER

#R : AC 380~400V : WHT #1-#3 : AC 220~240V
#S : AC 380~400V : BRN
#T : AC 380~400V : BLK

Samsung Electronics 5-11

 Wiring Diagram

6. Wiring Diagram

6-1 Indoor Unit

Samsung Electronics 6-1

Wiring Diagram
6-2 Outdoor unit
 AC048KXQPCC / AC036KXQPCC / AC100KXADEH / AC036KXADEC

This Document can not be used without Samsung’s authorization.

6-2 Samsung Electronics

 Wiring Diagram

 AC140KXADGH / AC048KXADGC

This Document can not be used without Samsung’s authorization.

Samsung Electronics 6-3

7. Reference Sheet

7-1 Index for Model Name

Model Code

H
AC H
048 KH NH PH PH CH CH /H H
MG

Buyer Name

Capacity (3 DIGIT)
KW / BTU / Liter
Rating Voltage
Code Type
Product Type
A A(115V, 60hz, 1Ф)
Code Type
B B(220V, 60Hz, 1Ф)
E 2012
C C(208~230V, 60Hz)
F 2013
D D(200~220V, 50Hz)
H 2014
E E(220~240V, 50Hz)
J 2015
F F(208~230V, 60Hz, 3Ф)
K 2016
G G(380~415V, 50Hz, 3Ф)
L 2017
H H(380V, 60Hz, 3Ф)
J J(460V, 60Hz, 3Ф)
K K(220~240V, 50/60Hz, 1Ф)
Product Type M M(127V, 50Hz)
Code Type N N (380~415V, 50/60Hz, 3Ф)
Product Type
AM DVM
Code Type
AJ PMA
S Set (NASA) Refrigerant
AC CAC (USD) / ASD
N Indoor (NASA) Code Type Refrigerant
AE EHS
X Outdoor(NASA) C COOLING ONLY
AN VTL
A Set ( NASA) H HEAT PUMP R410a
PAK (Packaged
AK B Indoor ( No NASA) R HEAT RECOVERY
System)
AG CHR C Outdoor (No NASA) D COOLING ONLY
R22
E HEAT PUMP
A Cooling only
Product Type (Indoor) Product Type (Outdoor) R134
B Heat Pump
Code Type Code Type
N N/A
1 1 WAY CST A Inv+Side+General Temp
2 2 WAY CST S Inv+Side+Low Temp
N MINI 4 WAY CST Q Inv+Side+Tropical Temp Product Type (Indoor) Product Type (Outdoor)
4 4 WAY CST F Inv+Top+Tropical Temp Code Type Code Type
H HSP DUCT B Non Inv+Side+General Temp F FLAGSHIP STANDARD+GENERAL
A Temp.+MODULE
M MSP DUCT N Non Inv+Side+Low Temp P PREMIUM
B STANDARD+LOW
L LSP DUCT R Non Inv+Side+Tropical Temp D DELUXE Temp.+MODULE
E FRESH AIR INTAKE Z Non Inv+Top+Tropical Temp S STANDARD
DUCT STANDARD+
C TROPICAL+MODULE
CEILING CONCEILED 1:1
G DUCT ->4Way : 4 , MSP Duct : STANDARD+GENERAL
(In/ D
C CEILING M , Ceiling : C Temp.+NON MODULE
out)
J CONSOLE S STANDARD
F FLOOR MOUNTING T DELUXE + TROPICAL
P FAC / PAC

※ / can be removed from the buyer card if there are not enough digits.

Samsung Electronics 7-1

7-2 Refrigerating Cycle Diagram
 AC048KXQPCC

Heat Exchanger PFE 12mm, 2X63X785, 6-1PASS, FP1.5, Louver

Indoor unit
Fan Motor BLDC, Sirocco, [C/H] 510/450/390 [rpm]
Heat Exchanger FMC 16mm, 1R*69S*910, 2EA, FP1.4, Corrugate
Outdoor unit
Fan Motor BLDC, Propeller, RPM MAX : 800 [rpm]

 AC036KXQPCC

Heat Exchanger PFE 12mm, 2X63X785, 6-1PASS, FP1.5, Louver

Indoor unit
Fan Motor BLDC, Sirocco, [C/H] 430/390/370 [rpm]
Heat Exchanger PFC 16mm, 1R*69S*910, 2EA, FP1.4, Corrugate
Outdoor unit
Fan Motor BLDC, Propeller, RPM MAX : 800 [rpm]

7-2 Samsung Electronics

 AC140KXADGH

Heat Exchanger PFE 12mm, 2X63X785, 6-1PASS, FP1.5, Louver

Indoor unit
Fan Motor BLDC, Sirocco, [C/H] 490/430/390 [rpm]
Heat Exchanger F&T Φ7W, 2R*66S*950, FP1.7, Louver
Outdoor unit
Fan Motor BLDC, Propeller, RPM MAX : 800 [rpm]

 AC100KXADEH

Heat Exchanger PFE 8mm, 2X63X785, 6-1PASS, FP1.5, Louver

Indoor unit
Fan Motor BLDC, Sirocco, [C/H] 410/370/350 [rpm]
Heat Exchanger F&T Φ7W, 2R*46S*950, FP1.7, Louver
Outdoor unit
Fan Motor BLDC, Propeller, RPM MAX : 830 [rpm]

Samsung Electronics 7-3

 AC048KXADGC

Heat Exchanger PFE 12mm, 2X63X785, 6-1PASS, FP1.5, Louver

Indoor unit
Fan Motor BLDC, Sirocco, [C/H] 490/440/390 [rpm]
Heat Exchanger F&T Φ7W, 2R*66S*950, FP1.7, Louver
Outdoor unit
Fan Motor BLDC, Propeller, RPM MAX : 800 [rpm]

 AC036KXADGC

Heat Exchanger PFE 12mm, 2X63X785, 6-1PASS, FP1.5, Louver

Indoor unit
Fan Motor BLDC, Sirocco, [C/H] 410/370/350 [rpm]
Heat Exchanger F&T Φ7W, 2R*46S*950, FP1.7, Louver
Outdoor unit
Fan Motor BLDC, Propeller, RPM MAX : 830 [rpm]

7-4 Samsung Electronics

 GSPN (GLOBAL SERVICE PARTNER NETWORK)
Area Web Site

Europe, CIS, Mideast & Africa gspn1.samsungcsportal.com

Asia gspn2.samsungcsportal.com

North & Latin America gspn3.samsungcsportal.com

China china.samsungportal.com

This Service Manual is a property of Samsung Electronics Co., Ltd. © Samsung Electronics Co., Ltd. December. 2017.
Any unauthorized use of Manual can be punished under applicable Printed in Korea.
International and/or domestic law. Code No. AC-00163E_1