Error code reference

LG Air Conditioner Error Code 47

Constant speed compressor discharge pipe temperature sensor fault: sensor measurement abnormal (open/short).

SourceLG Air Conditioner - Service Manual: Heat Recovery Outdoor Unit R410A (ARUB80LT2)p. 128

Diagnostic procedure

The full 47 procedure

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MyPros+ · DiagnosticsStep 1 preview

First diagnostic step

Check sensor connection to PCB; check sensor resistance (error if >5MΩ open or <2kΩ short).

SourceLG Air Conditioner - Service Manual: Heat Recovery Outdoor Unit R410A (ARUB80LT2)p. 128

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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

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

Models covered by the manuals that document this code

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The full 47 procedure

Where this code is documented

Models covered by the manuals that document this code

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