F4 reports a failed mainboard temperature sensor on a Bertazzoni induction hob.
Model compatibility: Bertazzoni reuses codes across series and model years, so F4 may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.
Plain language
What this code means
F4 means the mainboard temperature sensor has failed, shown with E on the zone indicator.
F4 and the mainboard
The mainboard handles power to the cooking zones, and it has a temperature sensor of its own so the hob knows when the electronics are heating. F4 is the code for that sensor failing, with E on the zone indicator.
The entry
Bertazzoni’s remedy reads: replace the mainboard. It contains no earlier step, and no reset, cool-down or cable check is given for F4. The mainboard itself is named as the part, not the sensor as a separate item.
Who does the work
Replacing the board means lifting the glass and handling the wiring, which the manual asks owners not to do. It directs them to the supplier for further service.
Until then
Switch the hob off at its supply.
Keep pans and liquids away from it.
Have the model number and the code ready.
Short answers
Does a hot glass plate cause F4? No. Heat readings belong to E1 and E2.
Related codes
E2: the IGBT sensor reading high, which clears after cooling
F1: a display board link failure that may also end in a new mainboard
For an F4 on a Bertazzoni cooktop in Los Angeles, ring (310) 987-4514 to plan the mainboard job, with the model number in hand. The cooktop repair page lists the appliance work.
Important safety warning. Do not attempt repairs involving electrical components, gas, water lines, refrigerant or sealed systems. Unplug the appliance if it is safe to reach the outlet, and leave internal diagnostics to a qualified technician.
Seeing this code on your Bertazzoni appliance?
Book a specialist visit for a clear estimate and approval before any repair.
