Unlike Sub-Zero or Wolf, a Thermador oven speaks in numbered F-codes, which makes diagnosis more direct once you know the family. An F-code is the control flagging a specific fault it has detected, usually in a sensor, the keypad, or the control itself. Some clear on a power cycle; the ones that return point to a part.
The Common Thermador F-Codes
| Code | Typical Meaning | What We Do |
|---|---|---|
| F1 | Control or keypad fault | Power cycle, then test the control |
| F2 | Oven over-temperature | Test sensor and relay, check for stuck contacts |
| F3 | Oven temperature sensor open or shorted | Ohm-test the sensor, replace if out of range |
| F7 | Stuck key on the touch panel | Clean the panel, service or replace if it persists |
Reading Them in Practice
An F3 is one of the most common and one of the most fixable: the oven temperature sensor has drifted out of its expected resistance range, so we ohm-test it against specification and replace it if it fails. An F2 over-temperature can be a sensor problem or a relay that is sticking closed and letting the element run, which needs testing before assuming the worst. F1 and F7 point to the control and keypad.
When to Call
A code that returns after a power cycle, an over-temperature F2, or an oven that will not heat needs a technician with a meter, because a sticking relay is a safety concern. Our Thermador maintenance guide helps keep sensors clean, and our refrigeration guide covers Thermador cooling.
Thermador Oven Showing an F-Code?
Book a diagnosis before it recurs. Diagnostic and travel fees, if applicable, are confirmed before the appointment and before repair approval.