Error code reference

Samsung Heat Pump Error Code E155

Communication error between indoor and outdoor unit during tracking (pre-tracking failure or different unit number between set units and indoor units).

SourceSamsung Heat Pump - Service Manual: Troubleshooting (AVXWHH071EA)p. 11-9, 11-38

Samsung codes Samsung heat pump codes

Diagnostic procedure

The full E155 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

First diagnostic step

Compare setting switch's indoor unit installation number with actual indoor units; press reset key (K3) and re-track.

SourceSamsung Heat Pump - Service Manual: Troubleshooting (AVXWHH071EA)p. 11-9, 11-38

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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

11 manuals in the MyPros+ library document this code for Samsung heat pump.

Models covered by the manuals that document this code

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The full E155 procedure

Where this code is documented

Models covered by the manuals that document this code

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