Thermador Cooktop Error Code E033C

E033C indicates a fault in the NTC selection circuit within the right ADB (relay board) of your Thermador induction cooktop. The NTC selection circuit routes temperature sensor signals from the right-side induction zones to the cooktop's control system. This error is classified as an internal ADB component failure, and the right relay board typically needs to be replaced to resolve it.

It is not advisable to continue using the cooktop when E033C is active. This fault affects the temperature monitoring circuit for the right-side induction zones, which means thermal protection for those zones may not be functioning correctly. Operating the cooktop in this condition could pose a risk of overheating without proper safeguard intervention.

Repair costs for E033C will vary depending on the specific cooktop model and your location, but you should expect to factor in both the cost of the replacement right ADB relay board and labor for a service technician. Parts alone for an ADB relay board on a Thermador induction cooktop typically fall in the range of $150 to $400, with total repair costs including labor often ranging from $250 to $600 or more.

Replacing the right ADB relay board requires disconnecting the cooktop from power, accessing internal components, and handling wiring harnesses connected to the board. While a skilled DIYer comfortable with appliance repair may be able to perform this replacement, it is recommended to have a qualified appliance technician handle the repair due to the electrical complexity of induction cooktops and the need to correctly identify the right board.

A power reset, such as turning off the breaker for a few minutes and restoring power, may temporarily clear the error display. However, because E033C points to an internal hardware fault on the ADB, the error will almost certainly return during normal operation until the faulty board is replaced. Resetting is not a repair for this code.