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Error code reference

Thermador Oven Error Code F-25

Caused by close contact to the control panel for more than 60 seconds, such as someone leaning against the…

Thermador codesThermador oven codes

Caused by close contact to the control panel for more than 60 seconds, such as someone leaning against the controls or objects hanging in front of controls.

First step from the service manual

Touch OFF or turn power off at the circuit breaker, wait 3 minutes and turn it back on.

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

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What F-25 means on a Thermador oven

The F-25 error code on a Thermador oven is a sustained keypad contact fault. The control board monitors the touch panel for continuous or prolonged input signals. When any key or zone on the control panel registers uninterrupted contact for more than 60 seconds, the system interprets this as an abnormal condition and triggers the F-25 code. This is a protective feature designed to prevent unintended oven operation caused by accidental input.

The component involved is the capacitive or membrane touch control panel and its interface with the main control board. Under normal use, a key press is brief and deliberate. When something presses against the panel continuously, such as a person leaning on the controls, a dish towel draped over the front, a pot handle resting against the panel, or a child pushing repeatedly on the surface, the controller detects the prolonged signal and shuts down input to prevent unintended changes to oven settings or temperature.

In some cases, the fault is not caused by an external object but by a failing touch panel itself. A keypad with a damaged membrane, moisture intrusion behind the panel, or a stuck key contact can produce the same persistent signal that triggers F-25. If the error returns immediately after a reset with nothing near the controls, the touch panel or its ribbon cable connection to the control board should be inspected.

Source: manufacturer service documentation.

Common causes of F-25

  1. 01

    Object pressing against the control panel

    Wiring / connection

    A dish towel, grocery bag, pot handle, or other item resting against the touch panel for over 60 seconds will trigger F-25. Check the area in front of and around the controls for anything making contact.

  2. 02

    Person leaning on or against the controls

    Wiring / connection

    Accidentally leaning against the panel while working at the counter is one of the most common triggers. The sustained pressure is detected as a continuous key press by the control board.

  3. 03

    Moisture or grease under the touch panel membrane

    Part replacement

    Spills or steam that work their way beneath the membrane keypad can create a persistent electrical contact at one or more key positions. Look for discoloration, bubbling, or sticky areas on the panel surface.

  4. 04

    Damaged or stuck membrane key

    Part replacement

    A physically damaged area of the touch panel membrane can cause a key to register as continuously pressed even without external contact. If F-25 returns immediately after a successful reset, this is a likely cause.

  5. 05

    Loose or faulty ribbon cable connection

    Part replacement

    The ribbon cable connecting the touch panel to the control board can cause erratic or continuous key signals if it is loose, kinked, or partially damaged. This would require inspecting the connection behind the control panel.

See the test procedure for each cause

Frequently asked questions about F-25

What does F-25 mean on a Thermador oven?
F-25 indicates that the control panel registered continuous contact at one or more touch zones for more than 60 seconds. The oven triggers this fault as a protective measure to prevent unintended operation. It can be caused by an object resting against the panel, someone leaning on the controls, or a defective touch keypad.
Will resetting the oven clear the F-25 error?
A reset will often clear F-25 if the cause was a temporary obstruction like an object pressed against the panel. Touch the OFF key or turn off the circuit breaker, wait 3 minutes, then restore power. If nothing is pressing on the controls and the code returns right away, the touch panel itself may be faulty and will need further inspection.
Is the F-25 error on a Thermador oven a safety concern?
F-25 is itself a safety feature, not a hazard indicator. The oven disables input when it detects a prolonged key contact to prevent the appliance from being changed to an unsafe setting accidentally. As long as the oven is not running unintended cycles, F-25 does not present an immediate danger, but a defective keypad that keeps triggering the code should be addressed promptly.
How do I fix the F-25 error on my Thermador oven?
Start by clearing the area around the control panel and removing anything that could be making contact with it. Then press the OFF key or switch off the circuit breaker for at least 3 minutes before restoring power. If the error clears and does not return, the issue was likely an external obstruction. If it persists, inspect the touch panel for moisture damage, stuck keys, or a loose ribbon cable connection to the control board.
How much does it cost to repair a Thermador oven showing F-25?
If the error is caused by an external object against the panel, there is no repair cost at all. If the touch panel membrane is damaged or defective, replacement parts typically range from around $75 to $250 or more depending on the model, with labor adding another $100 to $200 if a technician is needed. A faulty control board, while less common for this code, would be a higher expense.

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