LG Air Conditioner Error Code CH62
The power electronics that drive the compressor are overheating. Heat builds up when the outdoor unit cannot breathe, so clearing its airflow is the first fix; a repeat code points at the inverter board itself.
Also shown as: 62
Applies to: Residential wall-split and multi-split systems
Common causes
- Outdoor unit airflow blocked
- Fan not moving enough air
- Heat sink fins clogged with dust
- Inverter board fault
What to check, in order
- Check the outdoor unit and clear away anything blocking the fan or coil: leaves, covers, boxes, or a fence panel fitted too close.
- On a hot day, let the unit cool down switched off for at least 30 minutes before one restart.
- If the code returns with clear airflow, the inverter board needs professional testing.
Clear the code and test
- Fix what the checks above found first — a filter cleaned, an obstruction removed, the breaker restored. Clearing the code without fixing the cause only brings it back.
- Restore power at the breaker and switch the unit on with the remote.
- Run the unit in cooling or heating for ten to fifteen minutes and watch whether the code returns; some codes only appear after the compressor has run for a while.
- If the unit runs with no code, the fault is cleared. If the code returns, write down the code and whether the indoor or outdoor unit shows it before calling a technician — it speeds up the diagnosis.
When to call a professional
Most cases are solved by the checks above. Book a technician if any of these apply:
- The code comes back after you have run the checks and a test cycle.
- You smell burning, see sparks or scorch marks, or the breaker trips.
- Water is leaking and you cannot stop it.
- The fix needs panels opened beyond what your manual describes, or a part tested with a meter, and you are not set up for that.
When you call, give the brand, the code CH62, your model number (on a label on the side of the indoor unit) and the checks you already ran. It shortens the visit.
Parts that may be involved
Outdoor control board (inverter PCB)
Parts are model-specific. Find your model number first — usually on a label on the side of the indoor unit — and match the part to that number before ordering.
Questions people ask about CH62
What does CH62 mean on a LG air conditioner?
CH62 means: Outdoor inverter heat sink temperature too high. The power electronics that drive the compressor are overheating. Heat builds up when the outdoor unit cannot breathe, so clearing its airflow is the first fix; a repeat code points at the inverter board itself.
Can I fix LG CH62 myself?
Start yourself: the checks on this page cover the causes you can reach without opening the machine up. If they point to a faulty part, testing or replacing it is usually a technician job.
How do I clear LG CH62?
Fix what the checks above found first — a filter cleaned, an obstruction removed, the breaker restored. Clearing the code without fixing the cause only brings it back. Restore power at the breaker and switch the unit on with the remote. Run the unit in cooling or heating for ten to fifteen minutes and watch whether the code returns; some codes only appear after the compressor has run for a while.
Sources checked
The meaning and checks for this code were checked against the sources above in November 2026. Codes vary by model and region; if your manual lists a different meaning for your exact model, follow the manual.