Expanded exact-code directory
LG air conditioner error codes
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LG air conditioner code CH 00: meaning and exact next steps
CH 00 means a fault the unit wants inspected — LG's own framing. LG notes the error may be a temporary one caused by power instability or other electrical factors. This answer applies only to LG room, wall-mount, standing, ceiling-type and inverter air conditioners. Several codes are installation conditions rather than failures, and LG routes those to the installing technician rather than to service.
Open record LG air conditioner · exact codeLG air conditioner code CH 04: meaning and exact next steps
CH 04 means a drainage issue — LG's own wording: a malfunction of the indoor unit drain, or a condensate tank that is too full. On a ceiling-type unit LG states CH04 means condensate formed inside the indoor unit is not being drained. This answer applies only to LG room, wall-mount, standing, ceiling-type and inverter air conditioners. Several codes are installation conditions rather than failures, and LG routes those to the installing technician rather than to service.
Open record LG air conditioner · exact codeLG air conditioner code CH 05, E0, CH 53: meaning and exact next steps
CH 05, E0, CH 53 means a communication error between the indoor and outdoor units of inverter air conditioners — LG's own wording. This answer applies only to LG room, wall-mount, standing, ceiling-type and inverter air conditioners. Several codes are installation conditions rather than failures, and LG routes those to the installing technician rather than to service.
Open record LG air conditioner · exact codeLG air conditioner code CH 07: meaning and exact next steps
CH 07 means conflicting operating modes — LG's own wording. On a 2-in-1 heating and cooling system it appears when the standing and wall-mount units are set to different modes; on ceiling types, when units in different rooms run in conflicting modes. This answer applies only to LG room, wall-mount, standing, ceiling-type and inverter air conditioners. Several codes are installation conditions rather than failures, and LG routes those to the installing technician rather than to service.
Open record LG air conditioner · exact codeLG air conditioner code CH 10, E6, CH 67, EF: meaning and exact next steps
CH 10, E6, CH 67, EF means a fan fault — LG's own split: CH10 and E6 are the INDOOR unit fan, CH67 and EF are the OUTDOOR unit fan. This answer applies only to LG room, wall-mount, standing, ceiling-type and inverter air conditioners. Several codes are installation conditions rather than failures, and LG routes those to the installing technician rather than to service.
Open record LG air conditioner · exact codeLG air conditioner code CH 237, CH 238: meaning and exact next steps
CH 237, CH 238 means a power-configuration condition on models made after 2021 — LG's own explanation: the communication line configuration changed and each unit now has a separate power cord, so BOTH the indoor and outdoor units must be connected to power. This answer applies only to LG room, wall-mount, standing, ceiling-type and inverter air conditioners. Several codes are installation conditions rather than failures, and LG routes those to the installing technician rather than to service.
Open record LG air conditioner · exact codeLG air conditioner code CH 38, F4: meaning and exact next steps
CH 38, F4 means the air conditioner is low on refrigerant — LG's own wording. LG states the warning exists to protect the appliance from potential damage. This answer applies only to LG room, wall-mount, standing, ceiling-type and inverter air conditioners. Several codes are installation conditions rather than failures, and LG routes those to the installing technician rather than to service.
Open record LG air conditioner · exact codeLG air conditioner code CH 54: meaning and exact next steps
CH 54 means a reverse phase detection error — LG's own term. LG notes it may occur after a temporary power outage or electrical work. This answer applies only to LG room, wall-mount, standing, ceiling-type and inverter air conditioners. Several codes are installation conditions rather than failures, and LG routes those to the installing technician rather than to service.
Open record LG air conditioner · exact codeLG air conditioner code CH 61, P4, P6, P7, P8, CH 34: meaning and exact next steps
CH 61, P4, P6, P7, P8, CH 34 means overheating — LG's own wording: the outdoor unit overheating during cooling, or the indoor unit overheating during heating. This answer applies only to LG room, wall-mount, standing, ceiling-type and inverter air conditioners. Several codes are installation conditions rather than failures, and LG routes those to the installing technician rather than to service.
Open record LG air conditioner · exact codeLG air conditioner code CH 66: meaning and exact next steps
CH 66 means an issue with the communication line or the piping connection between the indoor and outdoor units — LG's own wording. LG describes it as a detection feature on inverter models. This answer applies only to LG room, wall-mount, standing, ceiling-type and inverter air conditioners. Several codes are installation conditions rather than failures, and LG routes those to the installing technician rather than to service.
Open record LG air conditioner · exact codeLG air conditioner code CH 90, CH 91, F4: meaning and exact next steps
CH 90, CH 91, F4 means a fault raised during the test run phase to prevent damage to the appliance — LG's own wording. LG notes some models display this as F4. This answer applies only to LG room, wall-mount, standing, ceiling-type and inverter air conditioners. Several codes are installation conditions rather than failures, and LG routes those to the installing technician rather than to service.
Open record LG air conditioner · exact codeLG air conditioner code CH 93: meaning and exact next steps
CH 93 means a communication problem between the indoor and outdoor units — LG's own wording. LG states CH93 typically occurs during the test run when communication is unstable, and that on models released after 2021 it can also appear for another reason. This answer applies only to LG room, wall-mount, standing, ceiling-type and inverter air conditioners. Several codes are installation conditions rather than failures, and LG routes those to the installing technician rather than to service.
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