E23
Siemens Drain Pump Control Circuit Fault

Drain pump triac or control fault; E23 displayed, the 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 the control board, Wiring short to the pump, Moisture damage on the 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 its coil resistance.
    • If very low resistance or a short to earth, replace the pump.
  • 2. Inspect wiring:
    • Check the harness from the control to the pump for chafing or shorts to the 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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