Bertazzoni KPH Hood Light: A key blinking slowly or quickly for filter service

What A key flashing (2 s / 0.5 s) means

On Bertazzoni KPH36XT, KPH48XT, KPH362XT and KPH482XT range hoods, the A key blinks to ask for filter care. A slow flash every 2 seconds means the anti-grease filters must be washed. A fast flash every 0.5 seconds means the active carbon filters must be replaced. Holding the A key for about 5 seconds resets the reminder. The owner sees only the blinking key; the hood keeps working.

Common causes of A key flashing (2 s / 0.5 s)

Anti-grease filters saturated after the cleaning interval (2 second flash)
Active carbon filters worn out in a recirculating setup (0.5 second flash)
The reminder simply not reset after a service

✓ One safe check you can try

1. Note the flash speed: slow means wash, fast means replace. 2. Remove the metal grease filters and wash them in warm soapy water or the dishwasher, then dry fully. 3. Replace carbon filters with the matching type if the flash is fast. 4. Refit the filters and hold the A key for about 5 seconds to reset. 5. If the key keeps flashing after a reset, call us.

! Why to stop there

Oily filters raise the fire risk over a cooktop.
Carbon filters have to match the model.
Electrical work 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.

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Other Range Hood codes

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A key flashing (2 s / 0.5 s)A key flashing (2 s / 0.5 s) questions

What do the two flash speeds mean?

A flash every 2 seconds means the anti-grease filters need washing. A flash every 0.5 seconds means the active carbon filters need replacing. Learn to count the speed before you decide which service is due.

How do I stop the blinking?

Hold the A key for about 5 seconds after servicing the filters. The reminder clears and the hood starts counting again for the next interval.

Do I have carbon filters?

Only if the hood recirculates air instead of venting outside. If it ducts outdoors, the fast flash does not apply to you and the wash reminder is the one you will see.