Error code reference

Samsung Heat Pump Error Code E506

Low pressure detection error at initial compressor start (low pressure below compressor down pressure before pump down).

SourceSamsung Heat Pump - Troubleshooting Guide: Outdoor Unit Error Codes (RMBH100GAM0SER)p. 260

Samsung codes Samsung heat pump codes

Diagnostic procedure

The full E506 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

Measure pressure with manifold gauge at system stop; check low pressure sensor value via S-net; if values match, refrigerant has leaked - discharge, vacuum, and recharge.

SourceSamsung Heat Pump - Troubleshooting Guide: Outdoor Unit Error Codes (RMBH100GAM0SER)p. 260

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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

1 manual in the MyPros+ library documents this code for Samsung heat pump.

Models covered by the manuals that document this code

RMBH100GAM0SER

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The full E506 procedure

Where this code is documented

Models covered by the manuals that document this code

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