Thermador Oven
Error Codes

F1 Element Supervisor Triggered High The bake or broil program begins, then the elements cut out almost immediately and F1 appears on the display. View -> F1-E0 Internal Control Board Failure High The control display does not respond to button presses and may show garbled text or unfamiliar symbols. View -> F2 Oven Temperature Too Hot High The clean program finishes its high-heat phase but the cavity does not cool down within the expected timeframe. View -> F3 Open Oven Sensor (RTD) High The display indicates preheating in progress but the cavity does not warm up and the elements never glow. View -> F4 Shorted Oven Sensor High The display shows preheating in progress but the cavity remains at room temperature. View -> F5 Element Supervisor Disabled High The bake or convection program appears to be running but no heat develops — the elements never draw current because the supervisor has disabled them. View -> F7 Touch Panel or Stuck Key Medium The oven starts a cooking program or changes settings without anyone pressing the controls. View -> F8 Shorted Meat Probe Detected Medium The error appears mid-bake without any meat probe plugged into the cavity socket, suggesting the board is detecting a phantom probe signal. View -> F9 Door Latch Position Error Medium Pressing Self Clean produces F9 instead of activating the door lock motor. View -> F10 Power Board Incompatibility High The error first showed up right after a technician replaced either the relay board or the display board, strongly suggesting a revision mismatch. View -> F11 Internal Board Communication Error High As soon as the oven powers on, F11 appears and no cooking, cleaning, or timer function can be accessed. View -> F13 Power Board Not Calibrated High The error shows up on the first power-up following a board replacement, because the new board shipped without model-specific calibration loaded. View -> F14 Display PCB EEPROM Error High The oven loses the time of day every time the breaker is cycled or power is interrupted, because the EEPROM cannot retain the stored value. View -> F20 Humidity Switch or Cancel Key Fault Medium The upper oven display shows F20 and ignores all button presses, while the lower oven may still function normally on double-oven C/CM/CJ models. View -> F30 Upper Oven Sensor Shorted High The upper oven display indicates preheating but the elements never draw current — the control has disabled them because the shorted sensor would report impossibly low temperatures. View -> F31 Upper Oven Sensor Open High The upper oven display shows preheat active but no heat develops — the open sensor circuit has caused the control to disable all upper cavity elements. View -> F32 Upper Oven Self-Clean Overheat High The upper oven clean program starts and runs for some time, then F32 interrupts it and the upper oven shuts down before the cleaning phase is done. View -> F33 Upper Oven Cooking Overheat High Baked items emerge burnt on the exterior while the oven display never showed a temperature warning — the sensor was under-reading while the cavity was actually much hotter. View -> F34 Cooling Fan Air Switch Failure High Normally a soft whirring is audible from the front grille area when the oven is hot. With F34 the oven is silent. View -> F40 Upper Meat Probe Shorted Medium The error appears mid-bake without any meat probe plugged into the upper oven cavity socket — the relay board is detecting a phantom short on the upper probe input. View -> F50 Upper Door Latch Signal Shorted High Pressing Self Clean on the upper oven produces F50 immediately instead of activating the door lock motor, because the control cannot confirm the latch status before beginning a high-temperature clean. View -> F60 Lower Oven Sensor Shorted High The lower oven indicates it is preheating but the cavity does not warm up — the shorted sensor has caused the control to disable lower oven heating to prevent a thermal runaway. View -> F61 Lower Oven Sensor Open High The lower oven display shows preheat active but no heat develops in the lower cavity — the open sensor circuit has triggered an immediate heating lockout on that cavity. View -> F62 Lower Oven Over-Temp in Clean High The clean program starts normally on the lower cavity but cancels with F62 well before the high-heat phase completes. View -> F70 Lower Meat Probe Shorted Medium The error appears mid-bake without any probe plugged into the lower oven socket — the relay board is detecting a phantom short on the lower probe input. View -> F80 Lower Door Latch Signal Shorted High Pressing Self Clean for the lower oven produces F80 immediately instead of activating the door lock motor — the control must confirm latch status before permitting a high-temperature cycle. View -> F81 Lower Door Stuck Unlocked High Selecting Self Clean on the lower oven activates the latch motor briefly, but the latch cannot reach the locked position within the allotted time, so the control aborts with F81. View -> F82 Lower Door Position Error Medium The lower oven begins a self-clean cycle — the door locks and temperature starts rising — but the control aborts with F82 partway through because a position switch reports an unexpected state. View -> F83 Lower Door Stuck Locked High The self-clean program completed and the lower oven has cooled to normal temperature, but the door handle does not release and the door cannot be pulled open — the latch remains in the locked position. View -> F84 Lower Latch Input Shorted to Ground High Pressing Self Clean for the lower oven immediately produces F84 — the control detects a grounded lower latch input before even activating the latch motor. View -> FC Communication Error Medium The error appears as soon as the breaker is turned on, before any cooking program is started. View -> FF A-to-D Converter Failure High Before locking out, the display briefly flickers between implausible temperature values — far too high or far too low for the actual cavity conditions. View ->