F19
Miele
Heating Time Exceeded
F19 displayed; dishwasher may not heat water or takes excessively long to complete cycles.
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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
Scaled or failed circulation heater, Defective NTC temperature sensor, Relay fault on electronic control board, Poor water circulation through heater
How to Fix / Troubleshooting
Safety: Disconnect power. Heating components can retain dangerous voltages and remain hot after use.
- Run service wash: If limescale is suspected, run a hot intensive program with a dishwasher descaler to improve heater efficiency.
- Check circulation: Ensure spray arms and filters are clean so water flows properly through the heater.
- Access heater: Remove the bottom panel to access the circulation pump/heater assembly. Inspect for signs of burning or leaks.
- Electrical tests: Measure heater resistance and NTC sensor values with a multimeter. Replace the heater assembly or NTC if readings are out of specification. If both are good, the main control board may have a faulty heater relay.
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Repair Difficulty
Professional Required
5/5
Required Part
Circulation Heater / NTC Temperature Sensor
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