The cooktop will not start and the display reads U400. This is the same condition Thermador describes for E9000 and E9010 on both its electric and induction platforms: the voltage coming into the cooktop is outside…
The cooktop will not start and the display reads U400. This is the same condition Thermador describes for E9000 and E9010 on both its electric and induction platforms: the voltage coming into the cooktop is outside the range it is designed to run on. The unit stops to protect itself, so look at the supply, not the surface.
1. Switch the cooktop off and avoid repeated restarts. 2. Do not remove covers or touch wiring. 3. Notice whether lights or other big appliances dim or act strangely. 4. Ask an electrician or the utility provider to check the voltage at the circuit.
Thermador documents both for the same voltage problem. Which one appears can depend on the control platform of the specific cooktop, so they are not two different problems. So there is only one underlying problem to chase.
It is possible. A loose or mismatched circuit is one of the listed causes, which is why an electrician should confirm the supply before the cooktop is blamed.
Normally yes. The code reflects the incoming voltage, so when the supply is back in range the cooktop can resume without a repair. No parts are usually involved.
Our technician checks it in your home and hands you a written price before touching anything.