Smeg two keys flashing: 24-hour air exchange is on
The 24h air exchange runs the hood at minimum speed for ten minutes every hour, for up to 24 hours.
Mon–Sat, 8am–8pm
- Mode, not a failure
- No repair needed
- Source: Smeg
Book a visit
Three short steps, about a minute.
or call (844) 398-3217
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What 24h keys flashing
actually means.
The 24h air exchange runs the hood at minimum speed for ten minutes every hour, for up to 24 hours. Two keys flash for as long as it is active.
Smeg range hood display · also shown as 24h air exchange
What to do when 24h keys flashing shows on the range hoodKind of codeMode, not a failure
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.
Usually leads toNo repair
Leave it on if you want the kitchen aired through the day.
Shows up asReading a Range Hood Error Code or Blinking Light
A range hood error code may appear as letters and numbers on a display, a light that blinks in a pattern, a filter reminder that will not clear, or a beep with the fan refusing to start.
MakeSmeg
A Smeg hood with a fan that won't start or lamps that won't light is seen in your kitchen, and the visit begins at its switch.
SourceSmeg user interface guide for touch-panel hoods (KBTU)
Smeg KBTU touch-panel hoods (guide 91477B656) and KPRU 9-button touch panels (guide 91477A860).
Before you book,
in this order.
Each step comes from Smeg's own guidance for 24h keys flashing on its range hoods. Follow it to the end: the last card says whether this is a visit.
Leave it on if you want the kitchen aired through the day.
Touch any key other than the light key to switch it off.
If the fan runs non-stop instead of ten minutes an hour, book a visit.
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
The flashing pair is not a filter alarm, which flashes the speed keys. It is not a stuck fan either; the hood rests between runs.
What you may
notice with it.
The range hood problems 24h keys flashing 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.
Smeg
range hoods.
A Smeg hood with a fan that won't start or lamps that won't light is seen in your kitchen, and the visit begins at its switch.
Smeg range hood repairMore Smeg codes
Mode, not a failure on other makes
Wall-mount range hood
The chimney hood fixed to a bare stretch of wall above the burners, its canopy catching the rising smoke while a telescoping cover hides the duct that climbs to the ceiling.
Under-cabinet range hood
The slim hood screwed to the bottom of the wall cabinet over the burners, venting up through that cabinet or back through the wall, or cleaning the air and returning it to the room.
Range hood insert
The working core of a custom hood: a steel liner or power pack carrying the blower, filters, lights and controls, fitted inside a hood built of wood, plaster or metal by a cabinetmaker.
In Smeg's own words
To start the 24 hour function, press and hold the button for 3 seconds.
Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Smeg KBTU touch-panel hoods (guide 91477B656) and KPRU 9-button touch panels (guide 91477A860).
Smeg 24h keys flashing 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 areasTampa BayFL · 31 areas
Miami / South FloridaFL · 47 areas
New York MetroNY · 75 areas
HoustonTX · 36 areas
ChicagoIL · 50 areas
Los AngelesCA · 95 areas
San DiegoCA · 31 areas
Questions
about 24h keys flashing.
Can I clear 24h keys flashing myself?
Why does my Smeg hood run for ten minutes every hour?
How do I stop it on my Smeg?
Does the 24h mode stop by itself on a Smeg?
Back to your everyday
Still showing 24h keys flashing?
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.