Error code reference

Samsung Heat Pump Error Code U200

Communication error between outdoor unit main and sub MICOM or communication error between outdoor units.

SourceSamsung Heat Pump - Service Manual: Troubleshooting Guide (AVXCMH036EA)p. 12-46

Diagnostic procedure

The full U200 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

Error reset (Key 3); check power supply (12V, 5V); check outdoor communication cable for cuts.

SourceSamsung Heat Pump - Service Manual: Troubleshooting Guide (AVXCMH036EA)p. 12-46

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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

2 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 U200 procedure

Where this code is documented

Models covered by the manuals that document this code

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