Error code reference

Samsung Air Conditioner Error Code 257

Fixed scroll compressor 2 discharge temperature sensor error (Open/Short) - error level over 4.95V (-30C) or below 0.5V (151C).

SourceSamsung Air Conditioner - Service Manual: PCB Setup & Troubleshootingp. 4-27, 4-59

Samsung codes Samsung air conditioner codes

Diagnostic procedure

The full 257 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

Check connection part of fixed scroll compressor 2 discharge temp sensor circuit; check wire breaking and connector PCB connection status.

SourceSamsung Air Conditioner - Service Manual: PCB Setup & Troubleshootingp. 4-27, 4-59

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More steps, wiring diagram references, and verified part numbers

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Where this code is documented

1 manual in the MyPros+ library documents this code for Samsung air conditioner.

Models covered by the manuals that document this code

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The full 257 procedure

Where this code is documented

Models covered by the manuals that document this code

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