LG AC Error Code List

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LG AC Error Code List

LG Corporation Company is a very successful company in electrical goods. It was founded on 5 January 1947 in Busan, South Korea. It was founded by Koo In-Hwoi and the Headquarters of the company is located in Seoul, South Korea.

LG Electroinics, LG Uplus, LG Chem, LG CNS and many more are the popular subsidiaries of the company. If you are using the LG air conditioner then you should go through the LG Split AC Error Code List pdf so that you understand the errors.

LG Split AC Error Code List PDF 2023

Indoor Unit Faults

Error Code Possible Cause
1 Indoor unit room temperature sensor error
2 Indoor unit inlet pipe sensor error
4 Float switch error (optional)
5 Communication error between indoor unit and outdoor units
6 Indoor unit outlet pipe sensor error
9 Indoor unit EPROM error
10 Indoor unit BLDC motor fan lock
12 Indoor unit middle pipe sensor error

‍Outdoor Unit Faults

Error Code Possible Cause
21 DC Peak (IPM Fault); Compressor DC voltage was too high
22 Current Transformed (CT2) error; Alternating current (AC) input too high
23 DC Link Low Volt
25 AC Low/High Volt
26 DC Comp Position Error (not providing rotation), Locking
27 PSC Fault; Current to inverter compressor between AC and DC converter circuit too high
28 Inverter compressor DC voltage is too high
29 Inverter compressor amperage is too high
31 Current-to-current transformer (CT) thermistor is too low
32 Inverter Compressor Discharge Pipe (D-Pipe) Overheat
40 CT Sensor Error; Thermistor is disconnected or shorted out
41 D-Pipe Sensor INV is disconnected or shorted out
44 Outdoor Air Sensor is disconnected or shorted out
45 Middle thermistor of outdoor unit condenser coil is disconnected or shorted out
46 Outdoor unit suction line thermistor is disconnected or shorted out
48 Outdoor unit coil outlet (liquid line) thermistor is disconnected or shorted out
53 Communication failure from outdoor unit to indoor unit
60 Outdoor unit printed circuit board (PCB) EPROM check sum error
61 Outdoor unit condenser coil temperature is too high
62 Outdoor unit inverter compressor PCB heat sink temperature is too high
63 Condenser coil pipe thermistor temperature is too low
65 Heat sink thermistor has disconnected or has shorted out
67 Outdoor brushless direct current (BLDC) fan motor lock error

LG Inverter Split AC Error Code List

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 indoor and outdoor units
c6 or ch6 Excessive current at inverter DC power circuit
c7 or ch7 Excessive compressor current
c8 or ch8 Indoor fan not rotating
c9 or ch9 Outdoor fan not rotating
ca or ch10 Faulty discharge thermistor
cc EEPROM error
 cd Inverter module error
po System in power mode ( not a fault )
lo System in test mode ( not a fault )

You can download the LG AC Error Code List PDF using the link given below.

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LG AC Error Code List

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