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Error code reference
Samsung Air Conditioner Error Code 128
Indoor unit heat exchanger IN sensor dislocation error.
SourceSamsung Air Conditioner - Service Manual: PCB Setup & Troubleshootingp. 4-25, 4-37, 4-94
Diagnostic procedure
The full 128 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 if the in sensor of IU's heat exchanger is dislocated; check if the holder is attached.
SourceSamsung Air Conditioner - Service Manual: PCB Setup & Troubleshootingp. 4-25, 4-37, 4-94
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
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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