VERIFIED
Which board
The mainboard is the circuit board that switches power to the cooking zones. It carries its own temperature sensor so that the hob can tell when the electronics are warming up. F4 says that sensor has failed. The zone indicator shows an E as well.
The remedy as printed
One line: replace the mainboard. There is no step before it. The manual does not list a reset, a cool-down or a cable check for this code, so none is offered here.
What this implies
The manual’s remedy is to replace the mainboard. The job needs the glass lifted and the hob’s wiring handled, which Bertazzoni asks owners not to do; the manual says to contact the supplier for further service.
Meanwhile
- Turn the hob off at its supply.
- Keep pans and liquids off it so nobody tries to use a zone with a failed safety sensor.
- Have the model number and the code ready for the call.
Common questions
Why replace a whole board for a sensor? The table names the mainboard itself as the part to replace, so the sensor is not listed as a separate item.
Is F4 caused by a hot glass plate? No. Heat-related readings have their own codes, E1 and E2, with a restart after cooling.
Compare
- E2: the IGBT sensor reading high, which cools down and restarts
- F1: the display board link, which also ends in a possible mainboard replacement
- F3: the same kind of failure at the coil
Mainboard replacement service in San Francisco
For an F4 on a Bertazzoni cooktop, call (415) 692-0756 and a technician can plan the mainboard job. Give the model number when you call.
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.
