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Error code reference

Thermador Cooktop Error Code E0246

Power board error checking induction module component: input relay

Thermador codesThermador cooktop codes

Power board error checking induction module component: input relay — same as E0232.

First step from the service manual

See error E0232 troubleshooting steps.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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  • Step-by-step tests with expected resistance, voltage, and continuity values
  • Wiring diagram references and connector pinouts from the OEM service manual
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What E0246 means on a Thermador cooktop

Error code E0246 on a Thermador induction cooktop indicates a power board fault related to the input relay within the induction module. The power board continuously monitors the state and performance of the induction module's internal components, including the input relay responsible for controlling power flow into the induction circuit. When the board detects an anomaly in how this relay is operating, switching, or responding, it triggers E0246 to alert the technician that a control or component-level failure has been detected in that circuit.

This error is functionally equivalent to E0232, meaning both codes point to the same root cause and share the same diagnostic and repair pathway. The input relay is a critical switching component that opens and closes to allow or interrupt the high-voltage power supply feeding the induction coil driver circuit. Failure can stem from a relay that is stuck open, stuck closed, or intermittently failing due to contact wear or coil degradation. In some cases, the fault lies not in the relay itself but in the power board circuitry that monitors or drives the relay.

Because this error mirrors E0232, all diagnostic steps developed for that code apply directly here. Technicians should inspect the induction module connections, evaluate the power board for visible damage such as burnt components or failed solder joints, and test the relay for proper switching behavior. If the relay tests within spec, the power board itself may require replacement.

Source: manufacturer service documentation.

Common causes of E0246

  1. 01

    Failed input relay on the induction module

    Part replacement

    The input relay may have worn contacts or a failed coil, causing it to stick open or closed. Testing the relay for proper switching behavior and continuity will confirm this failure.

  2. 02

    Power board circuit fault

    Part replacement

    The power board circuitry that monitors or drives the input relay may have failed, even if the relay itself tests correctly. Look for burnt components, failed capacitors, or damaged solder joints on the board.

  3. 03

    Loose or corroded connector between power board and induction module

    Wiring / connection

    A poor connection at the harness linking the power board to the induction module can cause the board to misread relay status and trigger this error. Inspect and reseat all connectors in this circuit.

  4. 04

    Intermittent induction module failure

    Part replacement

    The induction module itself may be sending incorrect feedback signals to the power board due to internal degradation. This often presents as an error that appears inconsistently before becoming permanent.

See the test procedure for each cause

Frequently asked questions about E0246

What does E0246 mean on a Thermador cooktop?
E0246 indicates a power board error related to checking the input relay within the induction module. The power board has detected a fault in how the relay is operating or responding within the induction circuit. This code is functionally identical to E0232 and uses the same diagnostic steps.
Can I fix E0246 myself without a technician?
Some basic checks, such as reseating connectors between the power board and induction module, can be performed by a knowledgeable DIYer. However, diagnosing and replacing the input relay or power board involves working near high-voltage components and requires proper safety precautions and test equipment. Most homeowners should have a qualified technician handle this repair.
Is it safe to use my cooktop while E0246 is displayed?
No. E0246 indicates a fault in the power control circuit for the induction module, and continued use could pose a safety risk or cause further damage to the control electronics. The cooktop should be powered off and left unused until the fault is diagnosed and repaired.
Will resetting the cooktop clear error E0246?
A power reset by switching off the circuit breaker for 30 to 60 seconds may temporarily clear the error, but it will return if the underlying fault with the input relay or power board has not been corrected. A reset alone does not fix the component-level failure causing this code.
How much does it cost to repair error E0246 on a Thermador cooktop?
Repair costs vary depending on which component has failed. Replacing a relay or repairing a power board connection may fall in the lower cost range, while a full power board or induction module replacement on a Thermador unit can cost considerably more, typically ranging from a few hundred to several hundred dollars including parts and labor. Getting a diagnostic estimate from a certified technician is the best starting point.

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