LG Inverter AC Error Codes|LG Cassette AC Error Codes

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lg air conditioner error codes

If the display of Indoor contains an error code.

Error Code: C0

Error content: indoor air sensor open or short

Error Code: C1

Error content: Indoor pipe sensor open or short

Error Code: C3

Error content: Outdoor air sensor open or short

Error Code: C4

Error content: Outdoor pipe sensor open or short

Check point:

Check the sensor connection to the PCB to see if it is well connected.
Replace it with a new sensor.

Error Code: C5

Error Content: Communication failure between indoor and outdoor unit.

Check point:

Check connecting cable wiring order between indoor and outdoor diagram.
Check all wire connectors to see if they are connected.
Indoor AC PCB Fault. (Less inside).
External PCB Fault (Low Inside)

LG Cassette AC Error Codes

LG Tower AC Error Codes|LG Cassette AC Error Codes

LG Tower AC Error Codes|LG Cassette AC Error Codes,The task is for the self-diagnosing Air conditioner and to inform the problems informally if there is a problem The following table has the on / off error mark for the operation LED of the evaporator body.
If more than two troubles occur simultaneously, the most trouble is expressed mainly for error codes.
After the error occurs, if the error is released, the error LED is also released simultaneously.
To work on the occurrence of an error code again, be sure to turn the power off and then on.
Whether or not the error code is different from the model

Error Code: 00

Description: no error

Error Code: 01

Description: Indoor Room Thermistor Error

Error Code: 02

Description: Indoor in-piping error

Error Code: 03

Description: Remote Controller Error

Error Code: 04

Description: drain pump error

Error Code: 05

Description: Communication error between in and out

Error Code: 06

Description: indoor out-piping error

Outdoor error;

Error Code: 21

Description: DC Peak (IPM Fault)

Error Code: 22

Description: CT2 (Maximum CT)

Error Code: 23

Description: DC Link Low Voltage

Error Code: 24

Description: High / Low Pressure / Heat Sink Switch

Error Code: 25

Description: Low Voltage / Over Voltage

Error Code: 26

Description: DC comp status error

Error Code: 27

Description: PSC fault error

Error Code: 28

Description: DC Link High Voltage

Error Code: 32

Description: D-Pipe High (INV)

Error Code: 33

Description: D-pipe high (normal)

Error Code: 40

Description: CT sensor (open / small)

Error Code: 41

Description: Invite. D-pipe thermistor error (open / short)

Error Code: 44

Description: Outdoor Air Thermistor Error (Open / Short)

Error Code: 45

Description: Condom pipe thermistor error (open / short)

Error Code: 46

Description: Suction Pipe Thermistor Error (Open / Short)

Error Code: 47

Description: Cast. D-pipe thermistor error (open / short)

Error Code: 51

Description: Capacity error (high / low)

Error Code: 53

Description: Signal error (indoor_outdoor)

Error Code: 54

Description: Step Error

Error Code: 60

Description: Check EEPROM even error

Error Code: 61

Description: Cond Pipe High

Error Code: 62

Description: High Heat

Error Code: 63

Description: Cond Pipe Reduce

Error Code: 65

Description: Heatsink thermistor error (open / short)

LG AC Universal Split Fault Codes

Fault Code 01: There is a fault with the indoor unit return air thermistor

Fault Code 02: There is a problem with the indoor unit coil inlet thermistor

Fault code 03: indicates wiring error between the remote controller and the fan coil, this is most common in group control applications where more than 1 fan coil is connected to a single remote controller

Fault Code 04: Fault Code CH04 indicates that the float switch of the fan coil has increased

Fault Code 05: These error codes indicate a communication fault between indoor and outdoor units; It appears approximately 5 minutes after powering the system

Fault code 06: There is a problem with the indoor unit coil outlet thermistor

Fault Code 07: On a multi split system, the first unit that is switched on is the cool heat master, the master condenser tells the unit what to do. If the condenser is under heating and any slave is set to cool, the CH07 fault code will appear

Fault Code 09: Check for loose connections or dry joints where the EEPROM connects on the main PCB, repair if possible, if not replace the PCB

Fault Code 10: Indoor Fan Motor Problem

Fault Code 21: This fault is caused by a current in the inverter DC power circuit. If the DC part of the circuit exceeds a fault of 14 amps then code 21 will be displayed

Fault Code 22: This defect is caused by compressor over-current view code 21. Please see the section on inverter testing at the end

Fault Code 23: This defect indicates a fault in the DC part of the inverter circuit; This means that the DC voltage for the inverter is less than 140 V Dc, it should be 370 V for single phase machines and 600 V DC for three phase machines.

Fault Code 25: This defect indicates a problem with the incoming power supply to the system.

Fault Code 26: This fault indicates a problem with the inverter compressor’s positioning system, indicating a seized compressor.

Fault Code 27: This defect indicates a problem with the inverter module, see the section on test inverters. Also the check reactor is connected to the PCB and check its resistance that it should be well below 1 ohm.

Fault Code 28: This defect indicates a problem in the DC part of the inverter circuit; This means that the DC voltage for the inverter is too high.

Fault Code 29: Check and correct anyone:

Overload operation (pipe restriction / restricted airflow / EEV faults / refrigerator. Overcharge)
Compressor damage (insulation damage / motor damage)
Low input voltage
ODU Inverter PCB Assembly Damage

Fault Code 32: Indicates that the inverter compressor discharge temperature is high (above 105) C) This usually indicates that the system lacks refrigerant or there is a blockage in the system.

Fault Code 33: Indicates that the fixed speed compressor discharge temperature is high (above 105) C) This usually indicates that the system lacks refrigerant or there is a blockage in the system.

Fault Code 39: Check and Repair or Replace as Required:

PCB faults / wiring faults
Different Micom Software Versions
ODU Inverter PCB Assembly Damage
Fault Code 40: This fault indicates a problem with the current drawn by the AC part of the inverter circuit.

Fault Code 41: This fault indicates an inverter compressor discharge thermistor fault

Fault code 44: Indicates a fault with the outdoor unit air thermistor

Fault code 45: Condenser coil outlet indicates a problem with the thermistor

Fault code 46: indicates a problem with the compressor suction thermistor

Fault code 47: An inverter compressor discharge thermistor indicates fault

Fault Code 48: This defect indicates that both the compressor discharge sensor and the condenser air temperature sensor are unplugged. Both these sensors are connected to a single connector on the outdoor unit PCB, plug it in and the fault will go away.

Fault Code 51: This indicates that the capacity of the indoor unit / units is too high for the condensing unit.

Fault Code 52: This fault code indicates a communication error between the main and sub micom (CPU) on the external PCB of the main unit.

Fault Code 54: This fault normally indicates a lost phase or phase 3 phase units are reversed on the power supply.

Fault Code 60: Check correct PCB assembly is installed, check for dry joints, replace external unit PCB if nothing is found.

Fault Code 61: The temperature of the outdoor unit condenser coil is greater than 65, C, this will usually be experienced in cooling mode and will indicate insufficient air above the coil.

Fault code 62: Outdoor unit inverter heat-sink thermistor shows that the heat sink exceeds 85eatingC.

Fault code 65: There is a problem with the inverter PCB heat sink thermistor for the heat sink on the outdoor unit PCB

Fault Code 67: This is a problem with an outdoor fan motor, where rotation is not detected, and may result in either mechanical or electrical failure.

Fault Code 73: Check and repair or replace as necessary:

Overload operation (pipe restriction / restricted airflow / EEV faults / refrigerator. Overcharge)
Compressor damage (insulation damage / motor damage)
Input voltage is abnormal
Power supply abnormal
Inverter pcb assembly damage

Fault Code 105: This is due to a communication error between the main outdoor PCB and the fan PCB

LG AC Error Code Solution|Inverter Air Conditioner

LG AC Error Code Solution|Inverter Air Conditioner The “unit” digit of the fault code is shown by the power that has the following symbol. It is usually red, but on some models it is green.If there is a malfunction in an LG universal unit, a two-digit number will appear on the display led by the remote controllers. If the unit does not have a remote controller, the fault will be displayed using the LED in front of the indoor unit.

Error Indicator:

LG AC Error Code Solution|Inverter Air Conditioner,The function provides self-diagnosis and displays error codes when there is any trouble.
Error codes are displayed as a CH **, and / or fascia display on the wired remote of the indoor unit. In addition, the code is indicated through the LED of the external unit control board.
If more than two problems occur simultaneously, a lower number of error codes are displayed first.
After the error occurs, if the error is released, the error LED is also released simultaneously.

LG Air Conditioner Error Codes Solution|Inverter Air Conditioner Content:

  1. LG Split Type AC Error Codes

  2. LG Multi Type AC Error Codes

  3. LG Floor Standing AC Error Codes

  4. LG Ceiling Cassette AC Error Codes

  5. LG AC Universal Split Fault Codes

  6. LG PTAC AC Error Codes

  7. LG Portable Air Conditioner Error Codes

LG Split Type AC Error Codes

Lg-Air-Conditioner-Error-Code

Indoor Unit Faults
Error code Cause
C1 or CH1 indoor temperature sensor open or closed circuit.
C2 or CH2 outdoor temperature sensor open or closed circuit.
C4 or CH4 heat sink temperature sensor open or closed circuit.
C5 or CH5  communication between indoor and outdoor units.
C6 or CH6  excessive current in the inverter DC power circuit.
C7 or CH7  excessive compressor current
C8 or CH8  indoor fan does not rotate.
C9 or CH9 Outdoor fan does not rotate.
C10orCH10 Compressor’s thermometer temperature control split system faulty (a short circuit or breakdown);
CH12 coil sensor defective
CA  Discharge temp greater than 1 ° C 2. Defective discharge thermistor
CC  EEPROM error
CD Inverter module error
PO  system in power mode – not a fault
Lo system in power mode – not a fault

LG Multi Type AC Error Codes

LG AC Error Code Solution|Inverter Air Conditioner

LG AC Error Code Solution|Inverter Air Conditioner

Error code = 01
Content = Air Sensor (Open / Short)
Error Case = Open / Short Circuit
Indoor position = closed

Error code = 02
Material = Inlet Pipe Sensor
Error Case = Open / Short Circuit
Indoor position = closed

Error code = 03
Content = Communication (Indoor Wired R / Control)
Case of error = poor communication
Indoor position = closed

Error code = 04
Material = drain pump / float switch
Case of error = float switch open circuit (high level water alarm)
Indoor position = closed

Error code = 05
Content = Communication (Indoor Outdoor)
Case of error = poor communication
Indoor position = closed

Error code = 06
Content = outlet pipe sensor
Error Case = Open / Short Circuit
Indoor position = closed

Error Code = 07
Content = Different Operation Modes
Error case = Indoor units set to different operation modes
Indoor position = closed

Error code = hl
Content = High Limit (Float Switch)
Case of error = same as code 04, float switch open circuit
Indoor position = closed

Error code = cl
Content = Child Lock Function Selected
Case of error = no error, press the timer and min button simultaneously for 3 seconds to toggle on / off
Indoor position = on

Error code = 21
Content = IPM defect (currently compressor)
LED01G = 2 times (red)
LED02G = 1 time (green)
Error case = Compressor malfunction, IPM fault
External position = closed

Error code = 22
Content = CT2 (Maximum current)
LED01G = 2 times (red)
LED02G = 2 times (green)
Case of error = current is 14 A.
External position = closed

Error code = 23
Content = DC Link Low Voltage.
LED01G = 2 times (red)
LED02G = 3 times (green)
Case of error = DC link volt. 140 V
External position = closed

Error code = 24
Material = Low / High Pressure
LED01G = 2 times (red)
LED02G = 4 times (green)
Error case = low / high press switch open
External position = closed

Error code = 25
Material = AC Low / AC High Voltage.
LED01G = 2 times (red)
LED02G = 5 times (green)
Case of error = abnormal AC volt. Input.
External position = closed

Error code = 26
Content = DC Compressor Status
LED01G = 2 times (red)
LED02G = 6 times (green)
External position = closed

Error code = 27
Material = PSC defect (reactor)
LED01G = 2 times (red)
LED02G = 7 times (green)
External position = closed

Error code = 28
Content = DC Link High Voltage
LED01G = 2 times (red)
LED02G = 8 times (green)
Case of error = closed
External position = closed

Error code = 32
Content = discharge pipe temp. High (inv)
LED01G = 3 times (red)
LED02G = 2 times (green)
Case of error = closed
External position = closed

Error code = 33
Content = discharge pipe temp. High (cons)
LED01G = 3 times (red)
LED02G = 3 times (green)
Case of error = closed
External position = closed

Error code = 40
Content = CT circuit
LED01G = 4 times (red)
LED02G = (Green)
Error case = CT circuit malfunction
External position = closed

Error code = 41
Material = D-pipe sensor INV. (Open / low)
LED01G = 4 times (red)
LED02G = 1 time (green)
Case of error = open / short circuit.
External position = closed

Error code = 44
Content = Air Sensor (Open / Short)
LED01G = 4 times (red)
LED02G = 4 times (green)
Case of error = open / short circuit.
External position = closed

Error code = 45
Content = Condensed. Pipe Sensor (Open / Short)
LED01G = 4 times (red)
LED02G = 5 times (green)
Case of error = open / short circuit.
External position = closed

Error code = 46
Material = Suction Pipe Sensor (Open / Short)
LED01G = 4 times (red)
LED02G = 6 times (green)
Error Case = Open / Short Circuit
External position = closed

Error code = 47
Content = D-pipe sensor cons. (Open / low)
LED01G = 4 times (red)
LED02G = 7 times (green)
Error Case = Open / Short Circuit
External position = closed

Error code = 48
Material = D-pipe and air sensor (open)
LED01G = 4 times (red)
LED02G = 8 times (green)
Error Case = Dual Sensor Unplugged
External position = closed

Error code = 51
Content = Over capacity
LED01G = 5 times (red)
LED02G = 1 time (green)
Error case = Overload connection
External position = closed

Error code = 52
Content = Communication error (main mic sub sub micom)
LED01G = 5 times (red)
LED02G = 2 times (green)
Case of error = poor / loss of communication
Outdoor position = 0ff

Error code = 53
Material = Communication error (indoor outdoor)
LED01G = 5 times (red)
LED02G = 3 times (green)
Case of error = poor / loss of communication
External position = closed

Error code = 54
Material = external 3-phase power supply reverse phase / missing phase
LED01G = 5 times (red)
LED02G = 4 times (green)
Error Case = Wiring Wrong
External position = closed

Error code = 60
Contact = EEPROM check even
LED01G = 6 times (red)
LED02G = (Green)
Case of error = check even miss-match
External position = closed

Error code = 61
Content = Condensed. Pipe sensor temp. High
LED01G = 6 times (red)
LED02G = 1 time (green)
Case of error = cooperation. Temporary. High
External position = closed

Error code = 62
Content = Heat sink sensor temp. High
LED01G = 6 times (red)
LED02G = 2 times (green)
Case of Error = Heat Sink Temp. High
External position = closed

Error code = 63
Content = Condensed. Pipe sensor temp. Less
LED01G = 6 times (red)
LED02G = 2 times (green)
Case of error = cooperation. Temporary. Less
External position = closed

Error code = 65
Material = Heat Sink Sensor (Open / Short)
LED01G = 6 times (red)
LED02G = 5 times (green)
Error Case = Open / Short Circuit
External position = closed

Error code = 67
Content = Outdoor BLDC Fan Locke
LED01G = 6 times (red)
LED02G = 7 times (green)
Case of error = fan motor / circuit problem
External position = closed

Error code = 105
Compound = compound. Error (main board fan board)
LED01G = 6 times (red)
LED02G = 5 times (green)
Case of error = poor / loss of communication
External position = closed

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