LG Refrigerator Error Codes: Full List & Meanings

Every LG refrigerator error code we have verified against LG's own support pages, with its official meaning. Codes vary by model, so confirm in your owner's manual. Support: LG USA Support (lg.com/us/support).

Codes by system

Heating

All LG refrigerator error codes

Codes marked "Reset only" or "Service" have no separate page because the manufacturer publishes no owner fix beyond a reset or a service call.

Code	Official meaning	System	Owner action
FF	There's a freezer fan motor issue, often ice build-up blocking the fan. Also: Er FF, E FF	Heating	Owner checks
FS	LG lists FS as: freezer sensor. This needs professional diagnosis unless noted.	Sensors	Service
rS	LG lists rS as: refrigerator sensor. This needs professional diagnosis unless noted.	Sensors	Service
dS	LG lists dS as: freezer defrost sensor. This needs professional diagnosis unless noted. Also: F dS, r dS	Sensors	Service
rT	LG lists rT as: external sensor. This needs professional diagnosis unless noted.	Sensors	Service
dH	LG lists dH as: defrost fault (ice, thermal fuse, heater or PCB). This needs professional diagnosis unless noted. Also: FdH, dHF	Sensors	Service
CF	LG lists CF as: condenser fan motor (sealed system). This needs professional diagnosis unless noted. Also: E CF, C	Sensors	Service
CH	LG lists CH as: high-side cycle leakage (possible refrigerant leak), licensed technician only. This needs professional diagnosis unless noted.	Sensors	Service
OF F	LG lists OF F as: Demo mode (cooling off); hold REFRIGERATOR + ICE PLUS for 5 s with a door open. This needs professional diagnosis unless noted.	Status / reminder	Service

Symptoms

Sources

https://www.lg.com/us/support/help-library/lg-refrigerator-error-code-list--20155159406537 (official)

Last reviewed: October 20, 2026. ErrorCodePro is not affiliated with LG.