Error code reference

Samsung Air Conditioner Error Code E486

Error due to over voltage/low voltage of outdoor fan PCB.

SourceSamsung Air Conditioner - Service Manual: Indoor Unit (AM Series)p. 4-106

Diagnostic procedure

The full E486 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 Inverter PCB CN15 and Fan PCB CN11 DC-Link voltage connection wire.

SourceSamsung Air Conditioner - Service Manual: Indoor Unit (AM Series)p. 4-106

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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