F13
Miele
Heating Time-Out / Insufficient Temperature Rise
Display shows F13; machine reports heating or temperature rise fault
Advertisements
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.
Advertisements
Possible Causes
Scaled heater block reducing heat transfer, failed heating element, faulty temperature sensor, low mains voltage
How to Fix / Troubleshooting
Safety first: Unplug the machine and allow it to cool before internal work.
User-level actions:
- Run a full descaling cycle with Miele descaling tablets to remove limescale from the heater and water paths.
- Ensure the machine is not installed in a very cold environment.
Technical inspection:
- Access the brew heater/thermoblock.
- Measure the resistance of the heating element and compare to Miele specifications.
- Check the NTC temperature sensor and wiring for damage.
Resolution:
- Replace a failed heating element or heavily scaled heater block.
- Replace a defective NTC sensor if readings are out of range.
- If both heater and sensor are good, the control board may be misreading temperature and should be evaluated by a technician.
Advertisements
Repair Difficulty
Hard
4/5
Required Part
Brew Heater / Thermoblock Assembly
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements