Error code reference

Samsung Air Conditioner Error Code E445

CCH malfunction and sump sensor miswiring error - CCH connector not connected to PCB or sump sensor detached from compressor.

SourceSamsung System Air Conditioner Indoor Unit - Full Service Manual (AM FN Series)p. 4-31, 4-94

Diagnostic procedure

The full E445 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 CCH connector is connected to PCB; check if sump sensor is attached to lower part of compressor; check CCH resistance (500-700 ohms).

SourceSamsung System Air Conditioner Indoor Unit - Full Service Manual (AM FN Series)p. 4-31, 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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