Error code reference

Samsung Air Conditioner Error Code E2

Tracking error - communication check failure where the number of indoor units detected during tracking does not match the installed indoor unit number setting switch.

SourceSamsung Air Conditioner - Service Manual: Troubleshooting (AVMWH020CA0XAG)p. 6-58, 6-59

Diagnostic procedure

The full E2 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 the setting switch setup value for indoor unit installation number on outdoor unit PCB with the actual indoor unit installation number.

SourceSamsung Air Conditioner - Service Manual: Troubleshooting (AVMWH020CA0XAG)p. 6-58, 6-59

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

15 manuals in the MyPros+ library document this code for Samsung air conditioner.

Models covered by the manuals that document this code

More models are covered than are listed here.

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