General motor error; the drum may not turn or turns erratically; E20 displayed.
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.
Possible Causes
How to Fix / Troubleshooting
Safety first: Unplug the appliance. Motor and inverter testing involves hazardous voltages; proceed only if qualified.
Step-by-step checks:
- 1. Inspect motor and wiring:
- Remove the rear panel and check the motor connector for burns or looseness.
- Inspect the harness from the motor to the inverter/power module.
- 2. Basic motor tests:
- For BLDC motors, measure winding resistances; they should be similar between phases.
- For universal motors, check continuity and insulation.
- 3. Inverter module:
- Look for visible damage (burn marks, bulging components).
- Replace the inverter or main control if confirmed faulty.
When to call a technician: Motor and inverter faults should generally be handled by an authorized Siemens technician.
Repair Difficulty
Required Part
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