Bertazzoni Ranges FAULT-FAN Error: Cooling fan motor failure
What Does FAULT-FAN Mean? FAULT-FAN is an indicator-light fault on older Bertazzoni Professional Series ranges that lack a numeric display. When the cooling fan motor fails to start, the control board immediately flashes the PRE-HEATING indicator and sounds the buzzer rather than allowing the oven to heat. This is a protective lockout — without active […]
Quick Assessment
Answer to continue safely
Is it safe to keep using?
No. Operating the oven without a functioning cooling fan will overheat the control board and cavity liner. Shut off the range and discontinue use until the fan motor is replaced.
Can I reset the code?
Yes. A 2-minute circuit breaker power-cycle clears the fault flag, but the fault will return immediately on the next activation attempt if the fan motor has not been repaired.
When to stop immediately?
Stop if you notice: Control panel is hot to the touch during attempted operation, Burning smell from behind the control panel or inside the oven cavity.
Symptoms You May Notice
Oven refuses to start and PRE-HEATING light flashes with buzzer
Selecting any bake or broil function causes the PRE-HEATING LED to flash immediately with an audible alarm rather than beginning a normal preheat cycle, as the control board detects the cooling fan has not started.
Fault indicator reappears within 10 seconds of oven activation
Even after a power-cycle reset the fault returns almost immediately when any cooking function is selected, because the fan motor cannot spin up to the minimum speed required by the board's tachometer circuit.
Control panel feels unusually hot to the touch
Without the cooling fan drawing air over the control electronics, heat from the oven cavity migrates toward the front panel, making the control area warm or hot during attempted operation.
Possible Causes
Cooling fan motor seized or burned out
The motor windings have failed electrically or the rotor has seized mechanically, preventing the fan blades from turning and stopping all airflow over the control board and cavity liner.
Requires ProfessionalThermal fuse on fan circuit blown
Sustained overheating from a previous fault or blocked ventilation can blow the thermal fuse wired in series with the fan motor, cutting power to the motor even though the motor itself may still be functional.
Requires ProfessionalSafe Checks You Can Do
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1
Power-cycle the range at the breaker
Switch the dedicated 240 V circuit breaker off for 2 full minutes, then restore power. Listen carefully when you next select a cooking function — a healthy fan produces a faint hum within the first few seconds.
If you hear no fan noise at all after power-up, the motor or its thermal fuse has failed and the range should not be used.
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2
Check rear ventilation clearance
Confirm the range has the minimum rear and side clearances specified in the installation guide — typically 2 inches rear and flush sides. Objects pushed against the rear of the unit can block the cooling air intake.
Blocked ventilation accelerates motor thermal fuse failure and can cause the fault to recur even after a fan replacement if clearances are not corrected.
When to Call a Professional
Contact a qualified technician if:
- No fan noise is audible at any point after power restoration
- Fault returns within 10 seconds of every activation attempt after reset
- Visible burn marks on the fan motor or wiring harness
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