Bertazzoni Cooktops FAULT Error: Cooling fan failure
What Does FAULT Mean on a Bertazzoni Induction Cooktop? FAULT on a Bertazzoni induction cooktop is a thermal protection alarm. The control board has lost confidence in the cooling fan — either the motor has stopped spinning or the tachometer feedback signal is absent — and has locked out every induction zone to prevent the […]
Quick Assessment
Answer to continue safely
Is it safe to keep using?
No. A FAULT alarm means the thermal protection system has activated. Do not attempt to use the cooktop until the cooling fan has been inspected and repaired by a qualified technician.
Can I reset the code?
Yes. Turning both selectors to OFF may clear the alarm if the root cause was a transient voltage event. If FAULT returns immediately or on the next use, the fan requires professional service.
When to stop immediately?
Stop if you notice: FAULT returns immediately after reset attempt, Fan cannot be heard running when cooktop is powered on.
Symptoms You May Notice
All induction zones stop working simultaneously and refuse to respond to the controls
Without confirmed airflow over the IGBT modules, the firmware locks out every zone to prevent thermal destruction of the power electronics. No zone can be activated while FAULT is displayed.
Cooling fan is inaudible when the cooktop is powered on
Under normal operation the cooling fan spins as soon as power is applied. Absence of fan noise is a strong indicator that the motor has seized or its wiring circuit is open.
Word FAULT appears on the display after a period of use or immediately on startup
If FAULT appears after heavy cooking, the fan likely seized under thermal load. Immediate FAULT on startup suggests a wiring or tachometer feedback fault.
Possible Causes
Cooling fan motor failure
The internal DC fan has seized, lost speed, or lost power. Without airflow the firmware locks out all zones as a thermal safety measure to prevent IGBT destruction.
Requires ProfessionalFan wiring harness or tachometer feedback open circuit
A broken wire or disconnected connector to the cooling fan prevents the control board from receiving the fan speed feedback signal. The absence of the tachometer pulse is interpreted as a fan failure.
Requires ProfessionalSafe Checks You Can Do
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1
Attempt a soft reset
Turn both zone control selectors to the OFF position simultaneously. Wait 60 seconds. If FAULT clears, monitor whether it returns during the next use.
A one-time FAULT that clears on reset can be caused by a brief voltage spike rather than a physical fan failure. If it does not return, note the occurrence and watch for recurrence.
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2
Check for ventilation blockage
Verify that the cabinet space beneath the cooktop is not blocked by stored items or a cabinet back panel that restricts airflow.
Bertazzoni induction cooktops require the minimum clearance specified in the installation manual. Even partial blockage causes the fan to work harder and can accelerate motor wear.
When to Call a Professional
Contact a qualified technician if:
- Cooling fan motor draws no current on DC supply test
- Tachometer output from fan is absent during powered test
- Fan blade is seized on motor shaft and requires fan assembly replacement
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