F11
Ariston
Drain Pump Circuit Failure
Washer-dryer attempts to drain but pump does not run; F11 displayed.
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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
Open-circuit drain pump, loose or burned pump connector, broken wiring between pump and control board, failed pump triac/relay on control board
How to Fix / Troubleshooting
Safety: Unplug the machine and prepare for residual water drainage.
Diagnosis:
- Check pump operation: Enter a drain or spin cycle and listen. If the pump is silent and F11 appears, proceed with electrical checks.
- Inspect pump connector: Access the pump from the front lower panel or rear (model dependent). Ensure the connector is secure and not burned.
- Measure pump resistance: With the machine unplugged, disconnect the pump and measure coil resistance. If open or very low, replace the pump.
- Wiring continuity: Check continuity from the pump connector back to the control board.
- Control board: If pump and wiring are good, the pump driver on the PCB may be faulty, requiring board replacement.
Note: Always clear the pump filter of debris when replacing or testing the pump.
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Repair Difficulty
Medium
3/5
Required Part
Drain Pump Assembly
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