A stainless baffle grease filter half slid out of the underside of an under-cabinet range hood, a small filter symbol glowing on the hood's control strip.

Bertazzoni A key flashing fast: KPH charcoal filters are due

On a KPH hood set up to recirculate, the control tracks charcoal filter use as well.

(844) 398-3217

Mon–Sat, 8am–8pm

  • Filter reminders
  • Range hood filter and baffle service
  • Source: Bertazzoni

Book a visit

Three short steps, about a minute.

or call (844) 398-3217

What A key flashing every 0.5 seconds
actually means.

On a KPH hood set up to recirculate, the control tracks charcoal filter use as well. When that interval is up, the A key flashes quickly, roughly every half second.

Bertazzoni range hood display · also shown as fast flashing A key

What to do when A key flashing every 0.5 seconds shows on the range hood

Before you book,
in this order.

Each step comes from Bertazzoni's own guidance for A key flashing every 0.5 seconds on its range hoods. Follow it to the end: the last card says whether this is a visit.

01

Remove the grease filters to reach the charcoal filters.

02

Replace the charcoal filters, or wash them if your kit is the washable type.

03

Refit everything and hold A for about five seconds until it stops flashing.

04

If the fast flash returns straight away, book a visit.

Still there?

It usually turns into range hood filter and baffle service. Book with the code and the model number.

What not to do

The fast flash does not point to a problem with the blower or the lights. It only matters on recirculating KPH hoods; the slow flash is the grease filter reminder.

What you may
notice with it.

The range hood problems A key flashing every 0.5 seconds tends to arrive with. Answer these at the range hood before anyone is booked.

All problems

Where A key flashing every 0.5 seconds usually leads

Range hood filter and baffle service.

Mesh or baffle filters, charcoal pads and the grease channel · lowest.

In Bertazzoni's own words

When the A key flashes with a 0.5 second frequency the active carbon filters must be replaced
Bertazzoni KPH36XT 36-inch wall hood user and installation manual Bertazzoni KPH36XT 36-inch wall hood user and installation manual

Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Bertazzoni KPH36XT, KPH48XT, KPH362XT and KPH482XT wall hoods. The manual lists charcoal filter code 901612 and replacement at least every four months.

Bertazzoni A key flashing every 0.5 seconds range hood repair,
where we come out.

The same visit in every metro below: the code, the model number, and a diagnosis before any part is ordered.

All service areas
A family cooking together under a stainless range hood in a bright kitchen.
For the heart of your home.

Questions
about A key flashing every 0.5 seconds.

Can I clear A key flashing every 0.5 seconds myself?
Remove the grease filters to reach the charcoal filters. If it comes back, it needs a visit.
How can I tell the two A key flashes apart on my Bertazzoni?
Count them: about one flash every two seconds is the grease filter reminder, about two flashes a second is the charcoal one.
Which charcoal filter fits a Bertazzoni KPH hood?
The KPH manual lists code 901612 for the non-regenerable charcoal filters.
My Bertazzoni KPH hood is ducted outside. Why the fast flash?
The control may still count charcoal time. Reset it with A; if it keeps returning, book a visit to check the setup.

Back to your everyday

Still showing A key flashing every 0.5 seconds?

Three things make the booking useful: the letters or blink pattern exactly as they showed, the full model number from the label behind the filters, and whether the fan still moves air on every speed. With those, the technician arrives with half the answer already worked out.

(844) 398-3217 Schedule a repair