F24
Miele
Heater Relay / Triac Fault
Dishwasher stops with F24; often associated with heating issues or sudden program interruption.
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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
Stuck heater relay on control board, Shorted heater triac, Wiring short between control board and heater, Moisture damage on control PCB
How to Fix / Troubleshooting
Safety: Unplug the appliance. Do not continue using the dishwasher with a suspected heater control fault due to fire risk.
- Inspect wiring: Remove the control panel and check the harness from the board to the heater for signs of overheating or melted insulation.
- Check PCB: Examine the control board for burnt spots, cracked solder joints, or corrosion.
- Do not bypass: Never bypass heater safety circuits or relays.
- Replace board: If visible damage is present or F24 persists after wiring checks, replace the electronic control module. This repair is best performed by a qualified technician.
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Repair Difficulty
Professional Required
5/5
Required Part
Electronic Control Board (Heater Relay Section)
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