Induction cooktop shows E9 and becomes inoperative or erratic.
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.
Possible Causes
How to Fix / Troubleshooting
Safety first: Turn off power at the breaker before any internal work.
- Extended power reset: Turn off the breaker for at least 15 minutes to allow capacitors to discharge and the control to fully reset. Restore power and test.
- Check for recent repairs: If a control board was recently replaced, verify that the correct Thermador part number was installed and that any required configuration steps were performed.
- Surge protection: If E9 followed a storm or outage, consider installing a surge protector on the appliance circuit after repair.
Persistent E9 usually indicates a failed control board. Replace the user interface board or main power/control board as specified in the Thermador service documentation for your model.
Repair Difficulty
Required Part
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