Error code reference

Samsung Heat Pump Error Code E331

High pressure sensor OPEN/SHORT error (SHORT below 0.4V, OPEN over 4.2V; detected when compressor ready to operate).

SourceSamsung Heat Pump - Service Manual: Troubleshooting Guide (AVMWH032CA0G)p. 220, 251

Diagnostic procedure

The full E331 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

Check sensor wiring and connector.

SourceSamsung Heat Pump - Service Manual: Troubleshooting Guide (AVMWH032CA0G)p. 220, 251

Unlock with pass

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

2 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 E331 procedure

Where this code is documented

Models covered by the manuals that document this code

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