--- title: "Bertazzoni T4 flashing: intensive speed on a KMC hood" description: "What T4 flashing means on Bertazzoni T4 flashing: intensive speed on a KMC hoods, what to check before booking, and when it is not a failure at all." url: "https://rangehooderepair.center/error-codes/bertazzoni-t4-flashing/" --- # Bertazzoni T4 flashing: intensive speed on a KMC hood T4 is the top, timed speed on the KMC hoods. ## What T4 flashing actually means. T4 is the top, timed speed on the KMC hoods. Its light flashes while it runs, and after six minutes the hood returns to the speed set before; if it was started with the blower off, the hood switches off at the end. Bertazzoni range hood display · also shown as T4 LED blinking What to do when T4 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 Let the six minutes run out, or press another speed key to change it sooner. ### 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 Bertazzoni A Bertazzoni range hood that has stopped pulling steam is inspected in your kitchen, beginning with the rating label hidden behind its grease filters. ### Source Bertazzoni KMC30X 30-inch canopy hood installation, use and care manual Bertazzoni KMC30X, KMC36X and KMC48X canopy hoods. ## Before you book, in this order. Each step comes from Bertazzoni's own guidance for T4 flashing on its range hoods. Follow it to the end: the last card says whether this is a visit. 01 Let the six minutes run out, or press another speed key to change it sooner. 02 If the hood turned off after intensive speed, that is normal when it was started from off. 03 If T4 flashes but the blower does not speed up, book a visit to check the blower. ### 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 flashing T4 is not an alarm about the motor or the keypad. The hood switching off at the end of intensive speed is also by design when it was started from off. ## What you may notice with it. The range hood problems T4 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 Stuck on One Speed**](https://rangehooderepair.center/problems/range-hood-stuck-on-one-speed/) 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/) ## Bertazzoni range hoods. A Bertazzoni range hood that has stopped pulling steam is inspected in your kitchen, beginning with the rating label hidden behind its grease filters. [Bertazzoni range hood repair](https://rangehooderepair.center/brands/bertazzoni/) More Bertazzoni codes [F](https://rangehooderepair.center/error-codes/bertazzoni-f/) [C F](https://rangehooderepair.center/error-codes/bertazzoni-c-f/) [C](https://rangehooderepair.center/error-codes/bertazzoni-c/) [4](https://rangehooderepair.center/error-codes/bertazzoni-4/) [A key flashing every 2 seconds](https://rangehooderepair.center/error-codes/bertazzoni-a-slow/) [A key flashing every 0.5 seconds](https://rangehooderepair.center/error-codes/bertazzoni-a-fast/) [F and C keys flashing](https://rangehooderepair.center/error-codes/bertazzoni-f-c-keys/) [S1 steady](https://rangehooderepair.center/error-codes/bertazzoni-s1/) [S1 flashing](https://rangehooderepair.center/error-codes/bertazzoni-s1-flashing/) [T2 flashing](https://rangehooderepair.center/error-codes/bertazzoni-t2-flashing/) [T1 flashing](https://rangehooderepair.center/error-codes/bertazzoni-t1-flashing/) [Light B flashing](https://rangehooderepair.center/error-codes/bertazzoni-b-light-flashing/) [All 14 Bertazzoni codes](https://rangehooderepair.center/error-codes/#codes-bertazzoni) Mode, not a failure on other makes [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/) [Falmec TIMER (red LED flashing)](https://rangehooderepair.center/error-codes/falmec-red-led-flashing/) [All 75 codes of this kind](https://rangehooderepair.center/error-codes/#family-mode) Bertazzoni 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. Bertazzoni 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. Bertazzoni 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 Bertazzoni's own words > T4 Flashing Turns the Motor on at Intensive. [Bertazzoni KMC30X 30-inch canopy hood installation, use and care manual](https://us.bertazzoni.com/downloads/7977/4374/libr.KMC30X.pdf?act=download) [Bertazzoni KMC30X 30-inch canopy hood installation, use and care manual](https://us.bertazzoni.com/downloads/7977/4374/libr.KMC30X.pdf?act=download) Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. 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Let the six minutes run out, or press another speed key to change it sooner. ### Why did my Bertazzoni hood switch off on its own after a few minutes? Intensive speed was probably started with the blower off. After six minutes it ends and the hood goes off. ### How long does intensive speed last on a Bertazzoni KMC? Six minutes, then it drops back to the previous speed. ### Can I keep the intensive speed on longer on my Bertazzoni? Press T4 again when it ends. There is no setting to make it run continuously. --- **[Read on the site: Bertazzoni T4 flashing: intensive speed on a KMC hood](https://rangehooderepair.center/error-codes/bertazzoni-t4-flashing/)** **[Book a visit with RangeHoodeRepair.center](https://rangehooderepair.center/schedule/)**