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Error code reference

Samsung Air Conditioner Error Code 425

Outdoor compression ratio error / 3-phase reverse phase or phase fail detection - when 3-phase L1(R)-L2(S)-L3(T) order is reversed or a phase has no power.

SourceSamsung Air Conditioner - Service Manual: PCB Setup & Troubleshootingp. 4-28, 4-30, 4-75

Samsung codesSamsung air conditioner codes
Diagnostic procedure

The full 425 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
1
First diagnostic step
Check 3-phase connection error; check if there is any problem with 3-phase detection part circuit; use 3-phase tester to verify phase order.

SourceSamsung Air Conditioner - Service Manual: PCB Setup & Troubleshootingp. 4-28, 4-30, 4-75

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Where this code is documented

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

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