Reading the F-Code System
Thermador and its GE-era relatives use F-codes to report oven faults, which is genuinely helpful because the number narrows the problem before a technician even arrives. The codes group into a few families: control and keypad faults, over-temperature conditions, sensor faults, and stuck keys. Knowing which family you are in tells you roughly what to expect.
Note that newer Thermador models may use E-style codes instead, so always record the exact code and format as it appears on your display.
What Each Common Code Means
F1 generally indicates a control board or keypad fault, where the electronics are not reading correctly. F2 indicates the oven has exceeded a safe temperature, which can stem from a stuck relay or a sensor fault and should not be ignored. F3 and F4 indicate the oven temperature sensor is reading open or shorted, so the control cannot get a valid temperature. F7 indicates a touch key is stuck, telling the control a button is pressed when it is not.
A single code from a one-time glitch may clear with a power reset, but a code that returns names a real fault, and the part it points to should be tested and replaced.
Code Reference
| Code | Meaning | Typical Fix |
|---|---|---|
| F1 | Control or keypad fault | Test and replace control or keypad |
| F2 | Oven over-temperature | Diagnose relay or sensor fault |
| F3 / F4 | Sensor open or shorted | Replace oven temperature sensor |
| F7 | Stuck touch key | Repair or replace touch panel |
AN F2 Over-Temp Code Deserves Prompt Attention
F2 means the oven ran hotter than it should have. Because a stuck relay can keep heating the oven, do not ignore a repeated F2; have it diagnosed.
Book a Repair with a Specialist
Diagnostic and travel fees, if applicable, are confirmed before the appointment and before repair approval.