Thermador Range Error Code F114

F114 indicates that the lower oven temperature exceeded 950 degrees Fahrenheit in a runaway condition, meaning the oven could not regulate or stop the heat rise. This is a safety fault that shuts down the oven to prevent damage. It points to a problem with the lower temperature sensor, the Power Board, or the wiring and connections between those components.

Resetting the range by cycling the power may temporarily clear the F114 code, but the fault will return if the underlying problem is not fixed. The oven should not be considered safe to operate just because the code has been cleared. Proper diagnosis of the sensor, P24 connector, Power Board, and element wiring is necessary to resolve the fault permanently.

Repair costs depend on which component has failed. A replacement lower oven temperature sensor typically runs in the range of $20 to $60 for the part, while a Power Board replacement can cost anywhere from $150 to $400 or more depending on the model. Adding professional labor, total repair costs commonly fall between $200 and $600, though complex wiring repairs or multiple failed components can push costs higher.

No, the range should not be used while F114 is active. A runaway temperature condition above 950 degrees Fahrenheit poses a serious risk of damage to the oven cavity, surrounding cabinetry, and potentially a fire hazard. The oven should remain off until the root cause is identified and repaired.

Start by inspecting the P24 connector on the Power Board for corrosion or loose pins. Next, measure the resistance of the lower oven temperature sensor, which should read approximately 1080 ohms at room temperature. If the sensor is within spec, the Power Board is likely faulty and should be replaced. Wiring between the Power Board and the heating element should also be checked for damage or continuity issues.