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Error code reference
Haier Washer Error Code Er12
Water level abnormity during drying cycle, possibly caused by broken drain pump, abnormal drain pump wiring, excessive water flowing adapter, or broken PCB.
SourceHaier HWD1600 Washer Dryer Combo - Service Manual
Diagnostic procedure
The full Er12 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 drain pump operation and wiring connections.
SourceHaier HWD1600 Washer Dryer Combo - Service Manual
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 Haier washer.
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