Bosch custom insert CHARCOAL FILTER key lit: time for new carbon filters
Custom inserts that recirculate air use charcoal filters as well as metal ones.
Mon–Sat, 8am–8pm
- Filter reminders
- Range hood filter and baffle service
- Source: Bosch
Book a visit
Three short steps, about a minute.
or call (844) 398-3217
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What CHARCOAL FILTER lit
actually means.
Custom inserts that recirculate air use charcoal filters as well as metal ones. Bosch counts 120 hours for the charcoal and then lights its key. Unlike the metal filters, charcoal is replaced, not cleaned.
Bosch range hood display · also shown as CHARCOAL FILTER button illuminated
What to do when CHARCOAL FILTER lit shows on the range hoodKind of codeFilter reminders
The hood has counted enough hours of fan time to ask for its filters: the mesh or baffle grease filters want a wash, or on a recirculating hood the charcoal filters want replacing. Most hoods count hours rather than measure grease, so the light comes on whether the filters are clean or not, and it stays on until it is reset with the key the manual names. A reminder that returns straight after a reset, or a hood that still pulls weakly with fresh filters, is worth a visit.
Usually leads toRange hood filter and baffle service
Cleaning or replacing what catches grease and odor: mesh and baffle filters, charcoal pads on recirculating hoods, and the grease channel.
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.
MakeBosch
Bosch range hoods and downdraft vents get a home visit in which the touch controls and the fan's timed shut-off are checked before anything is opened.
SourceBosch Custom Insert Hoods User Manual HUI34253UC, HUI30253UC, HUI36253UC, HUI80553UC, HUI86553UC
Bosch custom insert hoods HUI30253UC, HUI34253UC, HUI36253UC, HUI80553UC and HUI86553UC in recirculating installations.
Before you book,
in this order.
Each step comes from Bosch's own guidance for CHARCOAL FILTER lit on its range hoods. Follow it to the end: the last card says whether this is a visit.
Get replacement charcoal filters that match your insert model.
With the insert off and cool, swap in the new charcoal filters.
Hold CHARCOAL FILTER for three seconds until it beeps to reset the 120-hour count.
Book a visit if the key lights up again far sooner than expected.
Still there?
It usually turns into range hood filter and baffle service. Book with the code and the model number.
What not to do
This key has nothing to do with the grease filters' 40-hour reminder. If your insert is ducted outdoors and never had charcoal fitted, the key lighting up suggests a setting to look at rather than a filter to buy.
What you may
notice with it.
The range hood problems CHARCOAL FILTER lit tends to arrive with. Answer these at the range hood before anyone is booked.
All problems
Where CHARCOAL FILTER lit usually leads
Range hood filter and baffle service.
Bosch
range hoods.
Bosch range hoods and downdraft vents get a home visit in which the touch controls and the fan's timed shut-off are checked before anything is opened.
Bosch range hood repairMore Bosch codes
Filter reminders 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.
Island range hood
The hood that hangs from the ceiling over burners set into a kitchen island, open on all four sides, with its duct and wiring hidden inside a chimney that drops from above.
In Bosch's own words
After 120 hours of operation, the CHARCOAL FILTER button will illuminate indicating that the
Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Bosch custom insert hoods HUI30253UC, HUI34253UC, HUI36253UC, HUI80553UC and HUI86553UC in recirculating installations.
Bosch CHARCOAL FILTER lit 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 CHARCOAL FILTER lit.
Can I clear CHARCOAL FILTER lit myself?
Can I rinse the charcoal filters from my Bosch insert?
Why do both filter keys light on my Bosch insert?
My Bosch insert vents outside. Should the charcoal key ever light?
Back to your everyday
Still showing CHARCOAL FILTER lit?
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.