Miele · Professional Troubleshooting Guide
The oven has detected that its internal temperature has exceeded 305 degrees Celsius during regular use, indicating an overheating condition.
Click steps to track your progress.
Turn off the oven's power supply immediately at the circuit breaker.
Allow the oven to cool down completely, leaving the door slightly ajar if safe to do so.
Once cool, restore power and check if the error clears.
Avoid using the oven until the issue is resolved to prevent potential damage or fire hazard.