Error code reference

LG Air Conditioner Error Code 33

Discharge temperature of constant speed compressor at main outdoor unit is excessively high; system off due to rising constant speed compressor discharge temperature.

SourceLG Air Conditioner - Service Manual: ARUB Series (R410A)p. 254, 274

Diagnostic procedure

The full 33 procedure

Step 1 is visible so you can confirm you are on the right page. The remaining steps, the ones that tell you whether to actually replace a part, unlock with any pass.

MyPros+ · DiagnosticsStep 1 preview
1
First diagnostic step
Refer to CH32 procedure: check refrigerant, sensor, LEV, and liquid injection.

SourceLG Air Conditioner - Service Manual: ARUB Series (R410A)p. 254, 274

More steps, wiring diagram references, and verified part numbers
Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.
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Where this code is documented

78 manuals in the MyPros+ library document this code for LG air conditioner.

Models covered by the manuals that document this code

More models are covered than are listed here.

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