F11
Miele
Heat Pump Compressor / Inverter Fault
Heat-pump dryer stops heating; display shows F11.
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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
Failed compressor, defective inverter module, sensor feedback error in heat pump circuit, wiring fault between compressor and control
How to Fix / Troubleshooting
Safety first: Unplug the dryer. Heat pump systems contain high-pressure refrigerant; do not open sealed refrigeration components.
Basic user-level checks:
- Ensure condenser and filters are completely clean to avoid overloading the heat pump.
- Listen during operation: if the compressor never starts (no humming or vibration) while the fan runs, a compressor or inverter fault is likely.
- Inspect visible wiring and connectors to the compressor and inverter module for damage or loose connections.
- Do not attempt to open or repair the sealed system yourself. Contact a Miele-authorized technician for pressure, leak, and electrical tests on the heat pump circuit.
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Repair Difficulty
Professional Required
5/5
Required Part
Heat Pump Compressor / Inverter Module
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