Bertazzoni KG Hood Light: B blinking after 40 hours for mesh filter cleaning

What Light B flashing (motor off) means

On Bertazzoni KG hoods, such as the KG30CONX and KG36CONX, the hood goes into alarm mode after 40 hours of use and light B, the first-speed light, flashes while the motor is off. This tells you the mesh filters must be cleaned. To reset it, press B and C together with the motor off. The owner sees the first-speed light blinking on an idle hood, and the hood itself still works.

Common causes of Light B flashing (motor off)

40 hours of use reached since the last reset
Mesh filters loaded with grease
The reminder not reset after a cleaning

✓ One safe check you can try

1. With the motor off, take out the mesh filters. 2. Wash them in warm soapy water or the dishwasher and let them dry completely. 3. Put them back in the hood. 4. Press B and C together to reset the alarm. 5. If light B still flashes, call us.

! Why to stop there

Greasy mesh over a cooktop is a fire hazard.
Resetting without cleaning hides the need.
Wiring above the hood is live.

Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.

→Same appliance

Other Range Hood codes

A key flashing (2 s / 0.5 s)Bertazzoni KPH Hood Light: A key blinking slowly or quickly for filter service Display C flashing alternating with F / with C and FBertazzoni KG Hood Display: C blinking with F or C and F for filter service Light C flashing (motor off)Bertazzoni KG Hood Light: C blinking after 120 hours for charcoal filter replacement Red LED steady (filter alarm)Bertazzoni KIN30 PRO X Hood Insert Light: steady red LED filter alarm S1 LED steady / flashingBertazzoni KMC Chimney Hood LED: S1 steady or flashing for filter saturation

Light B flashing (motor off)Light B flashing (motor off) questions

Why is light B blinking?

After 40 hours of use the hood goes into alarm mode and asks for the mesh filters to be cleaned. The first-speed light blinks while the motor is off.

How do I reset it?

With the motor off, press B and C together once the filters are clean and back in place. The blinking stops and the 40 hours start again.

Is it different from the carbon filter alert?

Yes. Light C blinking after 120 hours is the carbon filter alert for recirculating installs, and that one is reset with B and D together.