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Error code reference
LG Air Conditioner Error Code 182
Communication error between Main and Sub MICOM of External PCB - failure receiving signal.
SourceLG Air Conditioner Outside Unit - Service Manual: ARNU/URNU Seriesp. 131
Diagnostic procedure
The full 182 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
Press the reset button; check communication LED between Main and Sub MICOM.
SourceLG Air Conditioner Outside Unit - Service Manual: ARNU/URNU Seriesp. 131
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
1 manual in the MyPros+ library documents this code for LG air conditioner.
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