Thermador E9 error code

The machine can’t detect the water tank — refill and reseat it; a persistent error points to the tank sensor.

Because a code points to a likely area rather than an exact part, we run a full on-site diagnosis to confirm the real cause — testing the components above and the wiring and controls behind them. You get a clear, flat-rate quote before any work begins, and most E9 faults are resolved on the first visit with quality parts and a parts-and-labor warranty.