Home › Air Conditioners › LG › CH32 / CH33 / CH36

LG Air Conditioner CH32 / CH33 / CH36 Error Code

Outdoor refrigerant or compressor protection. Here is what it means and how to clear it, easiest fix first.

CH32 / CH33 / CH36
May need a pro

LG puts these codes in the same group as CH38: refrigerant or compressor protection faults picked up by the outdoor unit. The trigger could be a one-off power problem, but it could also be a refrigerant shortage or a fault in the compressor, the circuit that drives it, or other electronics in the outdoor unit.

LG does not publish a separate meaning for each of these codes on its US help pages, and meanings can differ by model series. Check your installation or service manual for the exact fault.

Safety first: unplug the air conditioner (or switch off its breaker) before touching filters, hoses or panels. If you smell burning or gas, or see water near the outlet, stop and call a professional.

How to fix LG CH32 / CH33 / CH36

  1. Reset the power at the breaker

    Switch off the breaker that feeds the air conditioner (some systems have separate breakers for the indoor and outdoor units, so switch off both). Wait about five minutes, switch the power back on and restart the unit to see if the code clears.

  2. Check outdoor airflow

    With the power off, make sure nothing is piled against the outdoor unit and that its coil isn't clogged with leaves or debris. Clear anything you can by hand without opening the unit.

When to call a technician

If the code returns after a reset, stop using the system and book a technician; the outdoor unit's electrical and refrigerant parts are not homeowner repairs.

Parts that commonly cause CH32 / CH33 / CH36

Order parts by your exact model number so they fit.

Other LG air conditioner codes

Frequently asked questions

What does CH32 / CH33 / CH36 mean on a LG air conditioner?

LG puts these codes in the same group as CH38: refrigerant or compressor protection faults picked up by the outdoor unit. The trigger could be a one-off power problem, but it could also be a refrigerant shortage or a fault in the compressor, the circuit that drives it, or other electronics in the outdoor unit.

Can I fix LG CH32 / CH33 / CH36 myself?

Only the basic checks. You can safely try the steps above, but CH32 / CH33 / CH36 usually points to a part or fault that needs a technician.

What if CH32 / CH33 / CH36 keeps coming back?

A code that returns after a reset and the checks above usually means a part is wearing out. Note when CH32 / CH33 / CH36 appears (which cycle, how often) and have your model number ready; it helps a technician bring the right part on the first visit.

Last reviewed 2026-10-19. Codes and steps can vary by model; check your owner's manual.

References