Miele · Professional Troubleshooting Guide
The heater relay is stuck, similar to F07, but this error specifically points to potential issues with the pressure switch, the heater itself, or module connections.
Click steps to track your progress.
Turn off the washer dryer's power supply immediately.
Allow the appliance to cool down completely.
Ensure there are no blockages in the drain or inlet systems.
Check that the earth connection to the appliance is good and secure.
Reset the appliance by turning off power for 30 seconds and then restoring it.