--- title: "Bosch \"replace charcoal filter\": the recirculating wall hood needs new carbon" description: "What replace charcoal filter means on Bosch \"replace charcoal filter\": the recirculating wall hood needs new carbons, what to check before booking, and when it…" url: "https://rangehooderepair.center/error-codes/bosch-replace-charcoal-filter/" --- # Bosch "replace charcoal filter": the recirculating wall hood needs new carbon When a Bosch wall hood returns air to the kitchen instead of ducting it outside, an activated carbon filter holds the odors. ## What replace charcoal filter actually means. When a Bosch wall hood returns air to the kitchen instead of ducting it outside, an activated carbon filter holds the odors. The display counts 120 hours for it, four times the grease filter interval, and then asks for a new one. The count only matters once the display has been switched to circulating-air mode. Bosch range hood display · also shown as Replace charcoal filter What to do when replace charcoal filter shows on the range hood ### Kind of code Filter 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 to Range 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 as Reading 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. ### Make Bosch 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. ### Source Bosch Hood Use and Care Manual HCP30651UC, HCP36651UC, HCP80641UC, HCP86641UC Bosch wall hoods HCP30651UC, HCP36651UC, HCP80641UC, HCP86641UC and HCB50651UC, HCB56651UC in circulating-air mode. ## Before you book, in this order. Each step comes from Bosch's own guidance for replace charcoal filter on its range hoods. Follow it to the end: the last card says whether this is a visit. 01 Buy the matching activated carbon filter for your model from the accessory list in the manual. 02 With the hood off and cool, fit the new carbon filter. 03 Press and hold the minus key for five seconds to reset the reminder. 04 Book a visit if the reminder returns long before another 120 hours have passed. ### Still there? It usually turns into [range hood filter and baffle service](https://rangehooderepair.center/services/range-hood-filter-and-baffle-service/). Book with the code and the model number. ### What not to do Replace charcoal filter is not the grease filter message, and washing the carbon filter does not bring it back. On a hood ducted outdoors the message should not appear at all once the display is set to exhaust mode. ## What you may notice with it. The range hood problems replace charcoal filter tends to arrive with. Answer these at the range hood before anyone is booked. [All problems](https://rangehooderepair.center/problems/) Before you call ### [Reading a Range Hood Error Code or Blinking Light](https://rangehooderepair.center/problems/range-hood-error-code/) [All 7 causes, cheapest first](https://rangehooderepair.center/problems/range-hood-error-code/) It also comes with - [**Range Hood Runs but Barely Pulls Smoke**](https://rangehooderepair.center/problems/range-hood-weak-suction/) Problem ### Reading a Range Hood Error Code or Blinking Light 7 causes, cheapest first Where replace charcoal filter usually leads ## Range hood filter and baffle service. **Mesh or baffle filters, charcoal pads and the grease channel · lowest.** Book a visit [What the job involves](https://rangehooderepair.center/services/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 repair](https://rangehooderepair.center/brands/bosch/) More Bosch codes [clean grease filter](https://rangehooderepair.center/error-codes/bosch-clean-grease-filter/) [Auto](https://rangehooderepair.center/error-codes/bosch-auto/) [End](https://rangehooderepair.center/error-codes/bosch-end/) [Snd](https://rangehooderepair.center/error-codes/bosch-snd/) [Able](https://rangehooderepair.center/error-codes/bosch-able/) [GREASE FILTER lit](https://rangehooderepair.center/error-codes/bosch-grease-filter-key-lit/) [CHARCOAL FILTER lit](https://rangehooderepair.center/error-codes/bosch-charcoal-filter-key-lit/) [CONNECT and 2 flashing](https://rangehooderepair.center/error-codes/bosch-connect-2-flashing/) [Two short beeps](https://rangehooderepair.center/error-codes/bosch-two-short-beeps/) [Filter key flashes slowly at switch-off](https://rangehooderepair.center/error-codes/bosch-filter-key-flashing/) [Fan key backlight flashes slowly](https://rangehooderepair.center/error-codes/bosch-fan-key-flashing/) Filter reminders on other makes [Bertazzoni F](https://rangehooderepair.center/error-codes/bertazzoni-f/) [BEST Fan LED bar flashes slowly for 30 seconds after the fan is turned off](https://rangehooderepair.center/error-codes/best-fan-led-bar-flashing-after-off/) [BlueStar Timer icon blinking, blower off](https://rangehooderepair.center/error-codes/bluestar-timer-icon-fan-off/) [Dacor Low button blinking](https://rangehooderepair.center/error-codes/dacor-low-button-blinking/) [Elica Grease Filter](https://rangehooderepair.center/error-codes/elica-grease-filter/) [Faber Filter alarm LED on (steady)](https://rangehooderepair.center/error-codes/faber-filter-alarm-led-on/) [Falmec Red LED steady on with the fan off](https://rangehooderepair.center/error-codes/falmec-red-led-steady/) [Fisher & Paykel Filter button lit](https://rangehooderepair.center/error-codes/fisher-and-paykel-filter-button-lit/) [All 58 codes of this kind](https://rangehooderepair.center/error-codes/#family-filter) Bosch builds this ### 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. Bosch builds this ### 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. Bosch builds this ### 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 > Activated carbon filter: “replace charcoal filter” appears on the display panel. [Bosch Hood Use and Care Manual HCP30651UC, HCP36651UC, HCP80641UC, HCP86641UC](https://media3.bsh-group.com/Documents/8001369736_A.pdf) [Bosch Hood Use and Care Manual HCP30651UC, HCP36651UC, HCP80641UC, HCP86641UC](https://media3.bsh-group.com/Documents/8001369736_A.pdf) [Bosch Hood Use and Care Manual HCP30651UC, HCP36651UC, HCP80641UC, HCP86641UC](https://media3.bsh-group.com/Documents/8001369736_A.pdf) Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Bosch wall hoods HCP30651UC, HCP36651UC, HCP80641UC, HCP86641UC and HCB50651UC, HCB56651UC in circulating-air mode. ## Bosch replace charcoal filter 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. 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Buy the matching activated carbon filter for your model from the accessory list in the manual. If it comes back, it needs a visit. ### My Bosch hood vents outside. Why does it say replace charcoal filter? The display may still be set for circulating air. Switching it back to exhaust mode, the Able and None setting, stops the charcoal count. ### How long does the carbon filter last in a Bosch wall hood? Bosch's display asks for a new one after 120 hours of fan use. Kitchens with strong cooking smells may want to change it sooner. ### Which key resets the charcoal message on a Bosch hood? Hold the minus key for five seconds, with the new filter in place. --- **[Read on the site: Bosch "replace charcoal filter": the recirculating wall hood needs new carbon](https://rangehooderepair.center/error-codes/bosch-replace-charcoal-filter/)** **[Book a visit with RangeHoodeRepair.center](https://rangehooderepair.center/schedule/)**