Error code reference

Samsung Heat Pump Error Code E1

System down due to communication error after completion of tracking - communication not available for 2 minutes during operation between indoor and outdoor unit.

SourceSamsung Heat Pump - Service Manual: Troubleshooting (RVMH100FAM0G)p. 182, 199

Samsung codes Samsung heat pump codes

Diagnostic procedure

The full E1 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 reset key (K3) and check display; check for duplicated indoor unit PCB addresses; measure communication line with scope for DC±0.7V waveform.

SourceSamsung Heat Pump - Service Manual: Troubleshooting Guide (AVMBH020CA0XAG)p. 182, 199

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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

75,000+ service documents · 20,000+ error codes · 100+ brands

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The full E1 procedure

Where this code is documented

Models covered by the manuals that document this code

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