Miele F20 / Heating fault explained, with the manual's power-off restart sequence and when to call.
Model compatibility
Miele reuses codes across series and model years, so F20, Heating fault may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.
Plain language
What thiscode means
F20 means a heating fault; Thermostop may be active or the heating has a technical fault.
Two readings of F20
The message can mean the Thermostop function is running, or that the heating has a technical fault. Thermostop holds the programme until the set temperature is reached and pauses the time left display meanwhile; the programme then carries on.
At a glance
Code
F20, Heating fault
What it means
F20 means a heating fault; Thermostop may be active or the heating has a technical fault.
What you can check
Switch the machine off at the wall and pull the plug, or disconnect the fuse. Wait at least 2 minutes, reconnect, switch on and start the program again. If Thermostop is active, the program simply resumes once the set temperature is reached.
When to call a technician
If F20 is still showing after the power reset, book a service visit, since the heating itself probably has a technical fault.
Restart procedure
Miele’s order of steps for the heating fault:
Cut the power: switch off at the wall and pull the plug, or disconnect the fuse.
Leave it for at least 2 minutes.
Reconnect and switch the machine on.
Start the programme again.
Still showing
Contact Miele Customer Service or book a repair appointment online.
Compare
F2 is the open sensor circuit code, F210 concerns suds circulation, and F252 means dirty door contacts at the hinge.
Miele washer service for the metro areas we cover
For help in the Miami, New York, Houston, Los Angeles and San Diego metro areas, phone (844) 459-5005. Have F20, the model number and the result of the restart ready.
Do not attempt repairs involving electrical components, gas, water lines, refrigerant or sealed systems. Unplug the appliance if it is safe to reach the outlet, and leave internal diagnostics to a qualified technician.
Get started
Seeing this code on your Miele appliance?
Book a specialist Miele service visit for a clear estimate and approval before any repair. Experienced technicians, clear diagnostics, and workmanship coverage on completed repairs.
