E20
Iberna
Drain Pump or Motor Circuit Error
Dishwasher shows E20 and may stop with water in the tub or base, sometimes after a drain attempt.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Failed drain pump motor, Blocked pump impeller, Wiring fault to pump, Control board triac failure
How to Fix / Troubleshooting
Safety first: Unplug the dishwasher and prepare for water spillage when accessing the pump.
- Check for blockages: Remove the sump filter and inspect the drain pump area for debris. Clear any obstructions.
- Access pump: Remove the base panel and locate the drain pump. Disconnect hoses and check the impeller for damage or seizure.
- Test pump electrically: Measure coil resistance; an open circuit indicates a failed pump. Replace the pump if faulty.
- Inspect wiring: Ensure the harness from the control board to the pump is intact and connectors are secure.
If the pump and wiring are good, the control board’s pump driver may be defective and require replacement.
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Repair Difficulty
Hard
4/5
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