E03
Siemens Drain Pump / Drainage Fault

Washer-dryer does not drain; water remains in drum and E03 is displayed

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Possible Causes

Blocked drain pump filter, Foreign object in drain pump impeller, Blocked drain hose or standpipe, Defective drain pump motor

How to Fix / Troubleshooting

Safety first: Unplug the appliance. Water may spill when opening the filter; keep towels and a shallow tray ready.

Step-by-step checks:

  • 1. Clean the drain pump filter:
    • Locate the service flap at the bottom front of the machine.
    • Open it and pull out the emergency drain hose (if fitted); drain water into a tray.
    • Unscrew the pump filter cap slowly to release remaining water.
    • Remove lint, coins, buttons, and other debris from the filter and pump cavity.
  • 2. Inspect the pump impeller:
    • Look inside the pump housing and gently turn the impeller with your fingers.
    • If it is jammed or very stiff, remove any trapped objects (e.g., bra wires, hairpins).
    • If the impeller is loose on the shaft or wobbly, the pump may need replacement.
  • 3. Check the drain hose:
    • Ensure the drain hose is not kinked or crushed behind the machine.
    • Disconnect the hose from the standpipe or sink trap and flush it with water to clear blockages.
    • Check the sink trap for clogs if connected there.
  • 4. Test the drain pump (advanced):
    • Remove the rear or bottom panel to access the pump.
    • Inspect wiring and connectors for burns or loose contacts.
    • Measure pump coil resistance; if open or shorted, replace the pump.

When to call a technician: If the pump receives power but does not run, or if the control module is not sending power, professional service is advised.

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Repair Difficulty

Easy 2/5

Required Part

Drain Pump
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