E20
Gaggenau
Circulation Pump Motor Fault
Dishwasher displays E20 and may exhibit issues with circulation or unusual pump noise.
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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
Seized circulation pump, foreign object in the impeller, motor winding failure, wiring fault to the pump.
How to Fix / Troubleshooting
Safety: Disconnect power and water supply. Be prepared for residual water in the base.
Steps:
- Listen during wash: A loud humming sound without water movement suggests a jammed or failed pump.
- Access pump: Remove the base cover to access the circulation pump assembly.
- Check for obstructions: Remove the pump housing and inspect the impeller for glass, bones, or other debris. Remove any foreign objects found.
- Test motor: Measure the resistance of the motor windings and compare it to specifications. A short circuit or open circuit indicates a faulty motor.
- Replace pump assembly: If the motor is defective or the impeller is damaged, replace the complete circulation pump assembly with the correct Gaggenau part.
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Repair Difficulty
Hard
4/5
Required Part
Circulation Pump Assembly
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