Error code reference

Samsung Heat Pump Error Code E406

Suction temperature sensor breakaway - difference between initial and current suction temperature remains less than 2°C for 30 minutes.

SourceSamsung Heat Pump - Service Manual: Troubleshooting (RVXVHT140GC)p. 12-17

Samsung codes Samsung heat pump codes

Diagnostic procedure

The full E406 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 if suction sensor and sensor holder are correctly attached; verify resistance value.

SourceSamsung Heat Pump - Service Manual: Troubleshooting (RVXVHT140GC)p. 12-17

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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

8 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 E406 procedure

Where this code is documented

Models covered by the manuals that document this code

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