E23
Siemens
Drain Pump Control Circuit Fault
Drain pump triac or control fault; E23 displayed, pump may run continuously or not at all
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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
Shorted drain pump, Shorted triac on control board, Wiring short to pump, Moisture damage on control PCB
How to Fix / Troubleshooting
Safety first: Unplug the appliance before any work. Do not run the machine with suspected electrical shorts.
Step-by-step checks:
- 1. Test the drain pump:
- Disconnect the pump and measure coil resistance.
- If very low resistance or short to earth, replace the pump.
- 2. Inspect wiring:
- Check the harness from control to pump for chafing or shorts to chassis.
- 3. Control board inspection:
- Examine the pump triac area for burns or cracks.
- If damaged, replace the power module.
When to call a technician: Board-level faults and triac replacement require professional tools and skills.
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Repair Difficulty
Professional Required
5/5
Required Part
Power Module (Drain Pump Circuit)
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