LG CH-code family — What the numbers mean

What this error means

LG faults display as CH + a number: low numbers cover sensors and communication, others cover fan motors, refrigerant conditions, and protection stops. The exact map is model-specific, but the triage is universal: record the code, power cycle once, and match the code to your model's manual before anyone opens a panel.

Symptoms

• Any CH-number on the display
• Unit stopping under load

Try this first (safe DIY steps)

1. Record the exact CH number and your model number — together they identify the fault precisely
2. Power cycle at the breaker for 3–5 minutes
3. Clean filters; verify indoor and outdoor units both have power
4. Check your model's manual (or our database as it grows) for the specific code

Safety: power off before any physical intervention. Never bypass covers or interlocks — fuser areas run hot enough to burn.

When to call a technician

Any recurring CH code — most map to sensor, motor, or refrigerant work.