F14Serious
Miele Washer F14 Error Code
The relay that controls the heater on the main control board is malfunctioning.
Common causes
- Defective control board relay
- Short circuit in heater circuit
- Overheating
How to fix it
- Turn off power
- Visually inspect control board for burn marks
- Check heater and NTC before assuming board fault
⚠ When to call a pro: If heater and NTC are fine, control board replacement required.
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Always unplug the appliance (and turn off the water for washers/dishwashers) before inspecting. These guides are for information only and are not a substitute for a professional repair.