Error code reference

Samsung Heat Pump Error Code E104

Compressor down by low pressure protection control - low pressure sensor value below 2.6 kg/cm2 during cooling or below 1.4 kg/cm2 during heating.

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

Samsung codes Samsung heat pump codes

Diagnostic procedure

The full E104 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

Connect S-net and Manifold Gauge, then verify service valve is fully open.

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

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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

12 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 E104 procedure

Where this code is documented

Models covered by the manuals that document this code

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