--- title: "Falmec blue light flashing: the 24-hour air cycle is on" description: "What ON/OFF blue LED flashing means on Falmec blue light flashing: the 24-hour air cycle is ons, what to check before booking, and when it is not a failure at…" url: "https://rangehooderepair.center/error-codes/falmec-blue-led-flashing/" --- # Falmec blue light flashing: the 24-hour air cycle is on Holding the on/off key for more than 3 seconds starts a 24-hour cycle that runs the fan for an hour, rests for three, and repeats. ## What ON/OFF blue LED flashing actually means. Holding the on/off key for more than 3 seconds starts a 24-hour cycle that runs the fan for an hour, rests for three, and repeats. The blue LED flashes while it is active. It ends when you turn the motor off or after 24 hours. Falmec range hood display · also shown as 24h cycle What to do when ON/OFF blue LED flashing shows on the range hood ### Kind of code Mode, 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 to No repair Leave it on if you want the kitchen air refreshed through the day. ### 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 Falmec Falmec hoods are inspected where they hang, including the brackets and fasteners that carry their weight. ### Source Falmec Massimo Pro NRS instructions booklet (USA) Massimo Pro NRS (FNMAS28W6SS, FNMAS34W6SS) touch keypad. ## Before you book, in this order. Each step comes from Falmec's own guidance for ON/OFF blue LED flashing on its range hoods. Follow it to the end: the last card says whether this is a visit. 01 Leave it on if you want the kitchen air refreshed through the day. 02 Turn the motor off with its key to end it. 03 If the fan starts by itself with the blue light steady or off, 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 A fan starting on its own with the blue light flashing is the cycle, not a stuck relay. A steady blue light is just the normal motor-on indication at speed 1. ## What you may notice with it. The range hood problems ON/OFF blue LED flashing 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 Fan Won't Turn Off**](https://rangehooderepair.center/problems/range-hood-fan-wont-turn-off/) Problem ### Reading a Range Hood Error Code or Blinking Light 7 causes, cheapest first 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. [How to read what your range hood is telling you](https://rangehooderepair.center/problems/range-hood-error-code/) ## Falmec range hoods. Falmec hoods are inspected where they hang, including the brackets and fasteners that carry their weight. [Falmec range hood repair](https://rangehooderepair.center/brands/falmec/) More Falmec codes [Red LED steady on with the fan off](https://rangehooderepair.center/error-codes/falmec-red-led-steady/) [TIMER (red LED flashing)](https://rangehooderepair.center/error-codes/falmec-red-led-flashing/) ["+" LED flashing (speed 4)](https://rangehooderepair.center/error-codes/falmec-plus-led-flashing/) [All keys flash](https://rangehooderepair.center/error-codes/falmec-all-keys-flash/) Mode, not a failure on other makes [Bertazzoni C](https://rangehooderepair.center/error-codes/bertazzoni-c/) [BEST Fan LED bar flashes slowly and fan speed cannot be changed](https://rangehooderepair.center/error-codes/best-heat-sentry-fan-light-flashing/) [BlueStar Timer icon blinking, blower running](https://rangehooderepair.center/error-codes/bluestar-timer-icon-fan-on/) [Bosch End](https://rangehooderepair.center/error-codes/bosch-end/) [Café Low, Med and High LEDs rolling blink](https://rangehooderepair.center/error-codes/cafe-low-med-high-rolling-blink/) [Dacor Timer LED blinking](https://rangehooderepair.center/error-codes/dacor-timer-led-blinking/) [Elica Snd](https://rangehooderepair.center/error-codes/elica-snd/) [Faber Intensive speed drops back after 6 or 10 minutes](https://rangehooderepair.center/error-codes/faber-intensive-speed-timer/) [All 77 codes of this kind](https://rangehooderepair.center/error-codes/#family-mode) Falmec 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. Falmec 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. Falmec 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 Falmec's own words > ON/OFF (blue led flashing) If pressed for more than 3 seconds, it activates the 24h cycle [Falmec Massimo Pro NRS instructions booklet (USA)](https://storage.onpage.it/b2f22b3b75818fa762b59d06a6aaf57f74036802/110033107_Massimo_Pro_NRS-USA_web.pdf) [Falmec Massimo Pro NRS instructions booklet (USA)](https://storage.onpage.it/b2f22b3b75818fa762b59d06a6aaf57f74036802/110033107_Massimo_Pro_NRS-USA_web.pdf) Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Massimo Pro NRS (FNMAS28W6SS, FNMAS34W6SS) touch keypad. ## Falmec ON/OFF blue LED 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. 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Leave it on if you want the kitchen air refreshed through the day. ### Why does my Falmec turn on every few hours? The 24-hour cycle is on. It runs the fan for 1 hour, then pauses 3 hours, for a day. ### How do I stop the Falmec 24-hour cycle? Turn the motor off with its key; the cycle also ends on its own after 24 hours. ### Did I turn on the 24-hour cycle by accident? Probably, if the on/off key was held for more than 3 seconds. --- **[Read on the site: Falmec blue light flashing: the 24-hour air cycle is on](https://rangehooderepair.center/error-codes/falmec-blue-led-flashing/)** **[Book a visit with RangeHoodeRepair.center](https://rangehooderepair.center/schedule/)**