LG Error Code CH21

LG Error Code CH21 often relates to inverter or compressor overload protection. This may be caused by electrical faults, compressor strain, dirty coils, or refrigerant issues.

This is an important code because it can indicate compressor stress.

✅ Hycool Air Conditioning Sydney can diagnose LG CH21 faults safely and restore reliable performance. If CH21 appears, call Hycool now.