Error code reference

Samsung Air Conditioner Error Code Cx

Error of electronic expansion valve open in outdoor unit (x = indoor unit address 0-F, detected more than once).

SourceSamsung Cassette Air Conditioner - Service Manual (CH094EAM/UH094EAM)p. 27

Samsung codes Samsung air conditioner codes

Diagnostic procedure

The full Cx procedure

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MyPros+ · DiagnosticsStep 1 preview

First diagnostic step

Check if room temperature sensor connector is departed from PCB; measure resistance across both terminals.

SourceSamsung Air Conditioner - Service Manual: Troubleshooting (AVMKH020CA1)p. 182, 214

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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

3 manuals in the MyPros+ library document this code for Samsung air conditioner.

Models covered by the manuals that document this code

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The full Cx procedure

Where this code is documented

Models covered by the manuals that document this code

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