Error code reference

LG Air Conditioner Error Code E201

Communication error between indoor and outdoor units (installation number setting error, repeated indoor unit address, indoor unit communication cable error).

SourceLG System Air Conditioner Outdoor Unit - Full Service Manual (AM100/120/140/160 Series)p. 4-8, 4-16

Diagnostic procedure

The full E201 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
Compare indoor unit installation quantity setup switch setting with actual number of indoor units installed.

SourceLG System Air Conditioner Outdoor Unit - Full Service Manual (AM100/120/140/160 Series)p. 4-8, 4-16

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

4 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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