Error code reference

LG Air Conditioner Error Code 2001

Pipe detection error (HR unit): after auto operation, number of indoor units detected differs from number of communicating indoor units.

SourceLG Air Conditioner - Service Manual: R410A Refrigerantp. 102, 141

Diagnostic procedure

The full 2001 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
Check periodic blinking of the HR unit green LED (transmission LED).

SourceLG Air Conditioner - Service Manual: R410A Refrigerantp. 102, 141

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.

Models covered by the manuals that document this code

More models are covered than are listed here.

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