Zephyr C flashing: replace the charcoal filters on a recirculating hood
When a Zephyr is installed without a duct to the outside, charcoal filters clean the air before it returns to the kitchen.
Mon–Sat, 8am–8pm
- Filter reminders
- Range hood filter and baffle service
- Source: Zephyr
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What C
actually means.
When a Zephyr is installed without a duct to the outside, charcoal filters clean the air before it returns to the kitchen. The recirculating reminder has to be switched on, after which the control counts 120 hours and flashes C. Charcoal cannot be washed, so the filters are replaced.
Zephyr range hood display · also shown as flashing C, charcoal filter change reminder
What to do when C 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.
MakeZephyr
Zephyr hoods with unresponsive touch controls, dim lamps or a fan that drifts on without being asked are checked at your home.
SourceZephyr Firenze (ZFI-M90S) use, care and installation guide
Zephyr Essentials Firenze touch control, with the reminder enabled by holding a button 5 seconds while the hood is off.
Before you book,
in this order.
Each step comes from Zephyr's own guidance for C on its range hoods. Follow it to the end: the last card says whether this is a visit.
Order the charcoal filter listed in your manual and fit it once the hood is off and cool.
Do not wash or dishwasher the old charcoal filters; Zephyr says they must be replaced.
With the hood off, hold the button for about 5 seconds until C leaves the display to start a new 120-hour cycle.
If your hood is ducted outside and C keeps appearing, the recirculating reminder was switched on by mistake; your manual shows how to switch it off.
Still there?
It usually turns into range hood filter and baffle service. Book with the code and the model number.
What not to do
C is not a clogged duct or a blower problem, and a ducted hood does not need charcoal at all. The mesh grease filters have their own reminder, the flashing F.
What you may
notice with it.
The range hood problems C tends to arrive with. Answer these at the range hood before anyone is booked.
All problems
Where C usually leads
Range hood filter and baffle service.
Zephyr
range hoods.
Zephyr hoods with unresponsive touch controls, dim lamps or a fan that drifts on without being asked are checked at your home.
Zephyr range hood repairMore Zephyr 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 Zephyr's own words
indicate by a flashing C when charcoal filter replacements are needed.
Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Zephyr Essentials Firenze touch control, with the reminder enabled by holding a button 5 seconds while the hood is off.
Zephyr C 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 C.
Can I clear C myself?
Can I clean Zephyr charcoal filters instead of replacing them?
Why does my ducted Zephyr ask for charcoal filters?
How often will the C come back on my Zephyr?
Back to your everyday
Still showing C?
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.