Error code reference

Samsung Heat Pump Error Code E204

Compressor down by sump temperature protection control - sump temperature maintained over 95°C for over 5 minutes.

SourceSamsung Heat Pump - Service Manual: Troubleshooting (AVXWHH071EA)p. 11-9, 11-17

Diagnostic procedure

The full E204 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

Press error reset key (K3); connect S-net; check loading/unloading of digital compressor and PWM valve.

SourceSamsung Heat Pump - Service Manual: Troubleshooting (AVXWHH071EA)p. 11-9, 11-17

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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

10 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 E204 procedure

Where this code is documented

Models covered by the manuals that document this code

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