Miele Washing Machine Fault Code F4 Meaning and Possible Fixes
Miele Washing Machine Fault Code F4
If your Miele washing machine displays fault code F4, the appliance has detected an open circuit in the drying temperature sensor. This is a technical fault that requires professional attention.
View all Miele washing machine fault codes
What the F4 Fault Code Means
The F4 fault code indicates that the NTC drying temperature sensor circuit has developed an open circuit — meaning the electrical connection to the sensor has been broken. This sensor monitors temperature during the drying phase on washer-dryers and some washing machine models. Without a functioning sensor the machine cannot safely continue and will stop the programme.
Common Reasons This Fault Appears
Failed NTC drying temperature sensor
The sensor itself may have failed and is no longer completing the electrical circuit, which can happen due to age, heat damage or water ingress.
Broken or disconnected wiring
A break in the wiring between the drying temperature sensor and the control board will cause an open circuit and trigger this fault.
Loose connector
A connector that has worked loose from the sensor or the control board can interrupt the circuit and produce the F4 fault code.
Safe Checks You Can Try
Restart the washing machine
Switch the machine off at the mains and leave it unplugged for at least 2 minutes. Reconnect the power, switch back on and restart the programme. If the fault was caused by a temporary glitch this may clear it.
Miele advises that if the fault persists after a reset, the appliance cannot be repaired without professional assistance.
If You Need Spare Parts
If you are confident carrying out the repair yourself, compatible Miele washing machine parts are available on Amazon with next day delivery.
Always check your model number before ordering to ensure compatibility.
When To Contact A Professional
Miele advises that fault F4 is a technical fault that cannot be resolved without professional assistance. An engineer will need to test and replace the drying temperature sensor or associated wiring.
Internal components should only be inspected or repaired by trained professionals.
Related Miele Washing Machine Fault Codes
You may also encounter related issues indicated by Miele Washing Machine Fault Code F3 and Miele Washing Machine Fault Code F10.
Fault codes may vary slightly between different Miele washing machine models, so always consult the manufacturer documentation for your specific appliance.
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