Error code reference

Samsung Heat Pump Error Code sx

Heating operation forbidden when outdoor temperature is over 30°C, or charging refrigerant in heating when outdoor unit is over 15°C (flickering display).

SourceSamsung Heat Pump - Service Manual: Troubleshooting Guide (AVMWH032CA0G)p. 182, 217

Samsung codes Samsung heat pump codes

Diagnostic procedure

The full sx 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

Verify outdoor temperature; this is a protection feature, not a product defect.

SourceSamsung Heat Pump - Service Manual: Troubleshooting Guide (AVMWH032CA0G)p. 182, 217

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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

9 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 sx procedure

Where this code is documented

Models covered by the manuals that document this code

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