Thermador Cooktop Error Code E0245

Error code E0245 on a Thermador induction cooktop indicates that the power board (PB) has detected a fault during its self-check of the induction module's heat sink temperature sensor. The heat sink temperature sensor is a thermistor mounted directly on or near the induction module's heat sink assembly. Its job is to report real-time thermal data back to the power board so the board can regulate power output and prevent the induction components from overheating. When the power board cannot read a valid signal from this sensor, it triggers E0245 and shuts down the affected induction zone to protect the electronics.

The power board is responsible for both powering the induction module and continuously monitoring its operating conditions, including heat sink temperature. If the sensor circuit falls outside the expected resistance or voltage parameters, the board flags this as a critical error. The root cause may be a failed sensor, a wiring fault between the sensor and the board, or a failure within the power board's own sensor-reading circuitry. Because the diagnostic process starts with replacing the power board rather than the sensor independently, the power board is considered the most likely failed component, though wiring and connector integrity should be inspected first.

This error typically appears at startup or during operation and will prevent normal use of the cooktop until the fault is resolved. Resetting the unit may temporarily clear the code, but if the underlying hardware fault persists, E0245 will return. A qualified technician should inspect the wiring harness between the heat sink sensor and the power board, check for damaged connectors or pinched wires, and ultimately replace the power board if no external wiring fault is found.