Air Conditioner
LG
Updated Jul 23, 2026
LG AC CH67 Error — Outdoor Fan Motor Fault & Fix
CH67
LG · Air ConditionerCH67 (also shown as EF on some models) means the outdoor fan motor is not running or is lo…
Quick answer
CH67 (also shown as EF on some models) means the outdoor fan motor is not running or is locked. Without the outdoor fan, the condenser cannot reject heat and the compressor will overheat.
What CH67 means
The outdoor fan blows air across the condenser coil to dissipate heat from the refrigerant. CH67 appears when the fan motor is not spinning — either because it is jammed, the motor has failed, or the motor is not receiving power from the outdoor PCB.
LG's official guidance advises checking for debris or snow buildup around the fan first.
Do not run the AC with CH67 showing. Without the outdoor fan, the condenser pressure spikes rapidly, potentially damaging the compressor.
How to fix it
- Power off at the breaker.
- Inspect the fan visually. Look through the top grille of the outdoor unit — is there debris, a bird nest, ice, or snow blocking the blade?
- Clear any obstruction. Remove debris carefully. If the fan is frozen in winter, let it defrost naturally — do not force it.
- Try spinning the blade by hand (with power off). It should turn smoothly with slight resistance. If it feels stiff or stuck, the motor bearings may be seized.
- Check the motor connector inside the outdoor unit's electrical compartment (qualified personnel only). Reseat the plug.
- Replace the fan motor if it is seized or does not start when powered. Match the motor to your LG model number.
What does the CH67 code mean?
CH67 indicates the outdoor fan motor is not operating. The motor is locked, failed, or not receiving power from the outdoor PCB.
Common causes
- Debris blocking the fan blade (leaves, plastic bags, bird nests)
- Ice or snow buildup in winter
- Seized fan motor (bearing failure)
- Loose motor connector on the outdoor PCB
- Faulty outdoor PCB fan relay or driver circuit
- Fan motor capacitor failure (non-inverter fan motors)
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How to fix the CH67 error
Power off at the breaker
Do not run the compressor without the outdoor fan.
Visual inspection
Look through the outdoor unit grille for debris or ice blocking the fan.
Clear any obstruction
Remove leaves, plastic, bird nests, or ice carefully.
Spin the fan by hand
Should turn smoothly. Stiff or stuck means seized bearings.
Reseat the motor connector
Inside the electrical compartment (qualified personnel).
Replace the motor
If seized or burned out, replace with a matching LG part.
Safety first: The outdoor fan blade can start unexpectedly if the unit is in auto-restart mode. Always isolate power at the breaker before reaching into the unit.
Part you may need: Outdoor fan motor
Some LG models use a DC brushless outdoor fan motor with a built-in driver. Confirm the motor type before ordering.
Frequently asked questions
Can I oil the outdoor fan motor?
LG outdoor fan motors are typically sealed-bearing units. If seized, replacement is the correct fix — oiling rarely helps.
CH67 in winter?
Ice on the fan is common during defrost cycles. Let the ice melt naturally. If CH67 persists after defrost, the motor may be faulty.
✎ Written by
REZAUL Karim (Riad)
REZAUL Karim (Riad) is the founder of ErrFixHub and a hands-on electronics and home-appliance repair specialist with over 15 years of experience diagnosing and fixing air conditioners, washing machines, refrigerators, inverters and other household appliances. He built ErrFixHub to turn cryptic error codes into clear, step-by-step fixes anyone can follow — cross-checking every code against manufacturer documentation and real repair-bench experience.
