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Error code reference

Thermador Range Error Code F24

Touch input key stuck; keyboard disconnected (Sago control).

Thermador codesThermador range codes

Touch input key stuck; keyboard disconnected (Sago control).

First step from the service manual

Check all connections; ensure no objects near touch panel pads; replace control display PCB, if persists replace touch panel.

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

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What F24 means on a Thermador range

The F24 error code on a Thermador range indicates a fault within the touch input system, specifically signaling either a stuck or continuously activated touch key on the control panel, or a disconnected keyboard. This code is associated with the Sago control architecture, which uses capacitive touch panel pads rather than mechanical buttons. When the control board detects a key that remains in an active state beyond expected parameters, or loses communication with the touch panel entirely, it triggers F24 to alert the technician to a hardware-level input failure.

The most common causes fall into two categories: physical interference at the touch panel surface and electrical connection failures. Spills, debris, or even objects resting against the control panel face can simulate a continuous key press, causing the capacitive sensor to register a stuck input. On the electrical side, the ribbon cable or connector linking the touch panel to the control display PCB may have loosened, corroded, or failed, cutting off the signal path entirely.

Diagnosis begins by inspecting all wiring connections between the touch panel and the control display PCB, ensuring connectors are fully seated and free of corrosion or damage. The panel surface should be cleared of any moisture or foreign material that might be activating a pad. If the error persists after these checks, the control display PCB is the first component to replace. Should the fault continue after PCB replacement, the touch panel itself is the next candidate for replacement.

Source: manufacturer service documentation.

Common causes of F24

  1. 01

    Foreign material or moisture on touch panel

    Wiring / connection

    Spills, grease buildup, or moisture resting on the capacitive touch panel surface can simulate a continuously pressed key. Clean and dry the panel surface thoroughly and check if the error clears.

  2. 02

    Disconnected or loose keyboard connector

    Wiring / connection

    The ribbon cable or plug connecting the touch panel to the control display PCB may have come loose, triggering the disconnected keyboard condition. Inspect all connectors and reseat them firmly.

  3. 03

    Faulty control display PCB

    Part replacement

    The control display PCB may have failed internally and is misreading touch input states or failing to communicate with the panel. Replacing this board is the recommended next step if connections check out.

  4. 04

    Failed or damaged touch panel

    Part replacement

    The capacitive touch panel itself may have a defective pad or internal damage causing it to report a stuck key signal. If replacing the control PCB does not resolve the error, the touch panel assembly requires replacement.

  5. 05

    Object resting against the control panel

    Wiring / connection

    A utensil, towel, or other object placed against the touch panel face can continuously activate a pad. Remove anything in contact with the control surface and check if the fault clears.

See the test procedure for each cause

Frequently asked questions about F24

What does F24 mean on a Thermador range?
F24 indicates a touch input key stuck fault or a disconnected keyboard condition within the Sago control system. The range has detected that a capacitive touch pad is continuously registering as active, or that communication between the touch panel and the control display PCB has been lost. This prevents normal touch input operation and requires inspection of the panel surface, wiring connections, and potentially one or both control components.
Will resetting the range clear the F24 error?
A power reset by turning off the circuit breaker for 30 to 60 seconds may temporarily clear the F24 code if the cause was a transient signal issue. However, if the underlying cause is a stuck key due to debris, a loose connector, or a failed component, the error will return. A reset is a reasonable first step, but persistent F24 faults require hands-on diagnosis.
Is it safe to use my Thermador range while F24 is displayed?
Operating the range with an active F24 fault is not recommended. A stuck or unresponsive touch input can cause unpredictable behavior in control response, and the range may not accept commands reliably. It is best to discontinue use until the fault is diagnosed and resolved to avoid potential safety concerns.
How do I fix the F24 error on my Thermador range?
Start by clearing the control panel surface of any moisture, debris, or objects that may be pressing against the touch pads. Next, check all wiring connections between the touch panel and the control display PCB, reseating any loose connectors. If the error persists, replace the control display PCB first. If the fault continues after PCB replacement, the touch panel assembly itself will need to be replaced.
How much does it cost to repair a Thermador range F24 error?
Repair costs vary depending on which component requires replacement. If only professional labor is needed to reseat a connector, costs may range from roughly $75 to $150 for a service call. Replacing the control display PCB typically adds $150 to $400 or more in parts depending on the model. A touch panel replacement can add a similar or higher parts cost, so total repair bills for component replacement can range from $250 to $600 or beyond.

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