Bertazzoni Ranges FAULT-TEMP Error: Temp sensor probe failure
What Does FAULT-TEMP Mean? FAULT-TEMP is a synthetic indicator-light fault on older Bertazzoni Professional Series ranges — primarily the F30PROXV and PRO486 families — that do not display numeric error codes. The HEATING indicator light flashes while the buzzer sounds, telling you the oven’s RTD temperature probe has stopped delivering a valid signal to the […]
Quick Assessment
Answer to continue safely
Is it safe to keep using?
No. With a failed temperature sensor the control board cannot regulate oven temperature safely. Shut off the oven and discontinue use until the probe is replaced by a qualified technician.
Can I reset the code?
Yes. A 2-minute power-cycle (circuit breaker off then on) clears the fault flag from the control board. The fault will return immediately if the underlying probe failure is not repaired.
When to stop immediately?
Stop if you notice: Oven overheats significantly above the set temperature, Smoke or burning smell from the oven cavity during the fault.
Symptoms You May Notice
Oven stops heating mid-cook or never reaches set temperature
The oven cavity fails to reach the dialled temperature and cuts heating entirely, leaving food undercooked. The fault is repeatable across all bake and convection modes.
HEATING indicator light flashes with intermittent buzzer
The front-panel HEATING LED pulses on and off while an audible alarm sounds, indicating the control board has detected an out-of-range probe signal.
Cooling fans run with oven switched off
The convection cooling fans continue to operate after the function selector is moved to off, as the control board uses them to protect the cavity when a temperature fault is active.
Possible Causes
RTD probe open circuit or internal break
The resistance temperature detector inside the oven cavity has fractured internally, producing an open-circuit reading that falls well outside the normal 1080–1100 ohm room-temperature specification.
Requires ProfessionalDamaged or corroded wiring harness connector
The connector joining the probe lead to the control board can corrode or pull apart from repeated heat cycling, breaking the signal path and triggering the same fault as a failed probe.
Requires ProfessionalSafe Checks You Can Do
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1
Power-cycle the range
Switch off the dedicated 240 V circuit breaker for the range and leave it off for at least 2 full minutes to allow the control board to discharge completely, then restore power and test.
If the HEATING LED resumes flashing within the first heating cycle, the probe itself has failed and a power-cycle will not resolve it.
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2
Inspect probe connector at rear of oven cavity
With the range fully unplugged from mains power, open the oven door and look along the rear wall for the probe connector. Check whether it is fully seated and undamaged without disassembling any panels.
Do not attempt to measure probe resistance without a calibrated multimeter and service documentation — an incorrect reading may lead to unnecessary parts replacement.
When to Call a Professional
Contact a qualified technician if:
- Fault returns within minutes of a power-cycle reset
- Probe connector is visibly burned or corroded
- Oven temperature is uncontrolled — far above or below the set point
Need Professional Help?
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