The control strip on the front edge of a stainless chimney range hood, one small timer symbol lit beside the fan keys, steam fading above the burners below.

Zephyr
showing A then 1

Clean Air switches the hood on every 4 hours for 10 minutes to move air through the home.

(844) 398-3217

Mon–Sat, 8am–8pm

  • Mode, not a failure
  • No repair needed
  • Source: Zephyr

Book a visit

Three short steps, about a minute.

or call (844) 398-3217

Before you book,
in this order.

Each step comes from Zephyr's own guidance for A then 1 on its range hoods. Follow it to the end: the last card says whether this is a visit.

01

If you want it, leave it; the fan stops again after 10 minutes.

02

To switch it off, with the hood off hold the on/off button about 5 seconds until the display goes from A to a dash.

03

If the fan still starts by itself with Clean Air off, try a power reset at the breaker for 5 to 10 minutes, then book a visit if it continues.

Cleared?

The code is gone and the blower pulls steam up on every speed again without a new part. If it returns this week, or the filter reminder keeps coming back right after a cleaning, mention it in the booking.

What not to do

A then 1 is not a numbered error code, and it does not point to a stuck relay. A fan that runs nonstop, not in 10-minute bursts, is a different problem.

What you may
notice with it.

The range hood problems A then 1 tends to arrive with. Answer these at the range hood before anyone is booked.

All problems

No repair indicated

Nothing to repair.

The hood is doing something it was told to do, not wearing out: a delay-off timer that keeps the blower running for some minutes after the burners go off, a heat sentry that starts the fan by itself when it senses a hot pan, a Sabbath setting that locks the keys and dims the lights, or a link to the cooking surface that sets the speed on its own. No part is needed; a key sequence from the manual, or simply waiting, ends it.

In Zephyr's own words

This means the Clean Air feature is activated.
Zephyr Help Center: Range Hood Troubleshooting Zephyr Help Center: How Do I Enable Or Disable The Clean Air Feature?

Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Zephyr hoods with a single-character display and the Clean Air feature; the help center gives the on/off steps.

Zephyr A then 1 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 then 1.

Can I clear A then 1 myself?
If you want it, leave it; the fan stops again after 10 minutes.
Why does my Zephyr hood turn on in the middle of the night?
Clean Air is likely on. It runs the fan for 10 minutes every 4 hours whether or not anyone is cooking.
How do I turn off Clean Air on a Zephyr?
With the hood off, press and hold on/off for about 5 seconds until the display changes from A to a dash.
Does Clean Air wear out my Zephyr blower?
It adds run time at a low speed, which is light duty. If the noise bothers you at night, switching the feature off is the simple answer.

Back to your everyday

Still showing A then 1?

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