--- title: "BEST WPP1 speed 4 flashing and stuck on speed 3: Heat Sentry is protecting the hood" description: "What Speed 4 button flashing, speed 3 lit means on BEST WPP1 speed 4 flashing and stuck on speed 3: Heat Sentry is protecting the hoods, what to check before…" url: "https://rangehooderepair.center/error-codes/best-speed-4-flashing/" --- # BEST WPP1 speed 4 flashing and stuck on speed 3: Heat Sentry is protecting the hood On the WPP1, Heat Sentry reacts to excess heat inside the hood by taking the blower off speed 4 for 10 minutes and holding it at speed 3. ## What Speed 4 button flashing, speed 3 lit actually means. On the WPP1, Heat Sentry reacts to excess heat inside the hood by taking the blower off speed 4 for 10 minutes and holding it at speed 3. During that time speed 4 flashes and speed 3 stays lit. The same device can start the blower during a fire on the burners even if the hood was off. BEST range hood display · also shown as Heat Sentry on WPP1, speed 4 will not select What to do when Speed 4 button flashing, speed 3 lit 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 Look under the hood for flames; if a pan is burning, turn off the burner, cover it with a lid and leave it, never use water, and leave and call 911 if fire spreads into the hood or cabinets. ### 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 BEST BEST hood inserts and chimney hoods get a visit that traces the airflow from the filters up to wherever the blower is mounted. ### Source BEST WPP1 series chimney hood installation instructions WPP1 series chimney hoods with the four-speed push-button control and the IQ Blower System. ## Before you book, in this order. Each step comes from BEST's own guidance for Speed 4 button flashing, speed 3 lit on its range hoods. Follow it to the end: the last card says whether this is a visit. 01 Look under the hood for flames; if a pan is burning, turn off the burner, cover it with a lid and leave it, never use water, and leave and call 911 if fire spreads into the hood or cabinets. 02 Otherwise reduce the heat and let the hood run at speed 3 for the 10-minute period. 03 If you must stop the blower, BEST says to do it from the main electrical panel, since the blower button will not. 04 If speed 4 keeps flashing on light cooking, book a visit to check the heat device and the airflow. ### 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 This is not a failed speed-4 motor winding, since the blower returns to speed 4 after the protective period. A speed light that flashes after you pressed delay-off is the timer, not Heat Sentry. ## What you may notice with it. The range hood problems Speed 4 button flashing, speed 3 lit 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/) - [**Range Hood Fan Won't Turn Off**](https://rangehooderepair.center/problems/range-hood-fan-wont-turn-off/) - [**Grease Fire Under or Inside a Range Hood**](https://rangehooderepair.center/problems/range-hood-grease-fire/) 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/) ## BEST range hoods. BEST hood inserts and chimney hoods get a visit that traces the airflow from the filters up to wherever the blower is mounted. [BEST range hood repair](https://rangehooderepair.center/brands/best/) More BEST codes [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/) [Fan LED bar flashes slowly and fan speed cannot be changed](https://rangehooderepair.center/error-codes/best-heat-sentry-fan-light-flashing/) [All 4 blower speed lights flash for 30 seconds](https://rangehooderepair.center/error-codes/best-four-speed-lights-flashing/) [Calibration button light blinks continuously](https://rangehooderepair.center/error-codes/best-calibration-light-blinking/) [Speed indicator LED flashing after pressing delay-off](https://rangehooderepair.center/error-codes/best-speed-light-flashing-delay-off/) [WiFi LED flashing](https://rangehooderepair.center/error-codes/best-wifi-led-flashing/) Mode, not a failure on other makes [Bertazzoni C](https://rangehooderepair.center/error-codes/bertazzoni-c/) [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 77 codes of this kind](https://rangehooderepair.center/error-codes/#family-mode) BEST 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. BEST 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. BEST builds this ### Range hood insert The working core of a custom hood: a steel liner or power pack carrying the blower, filters, lights and controls, fitted inside a hood built of wood, plaster or metal by a cabinetmaker. ## In BEST's own words > only speed 3 can be used; the speed 4 button will flash while the speed 3 button will light up. [BEST WPP1 series chimney hood installation instructions](https://bestrangehoods.com/api/media/file/WPP1-Installation-Guide-1a8e5346-a29e-4652-9f8e-bd92c0e60e81.pdf) [BEST WPP1 series chimney hood installation instructions](https://bestrangehoods.com/api/media/file/WPP1-Installation-Guide-1a8e5346-a29e-4652-9f8e-bd92c0e60e81.pdf) Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. WPP1 series chimney hoods with the four-speed push-button control and the IQ Blower System. ## BEST Speed 4 button flashing, speed 3 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. 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Look under the hood for flames; if a pan is burning, turn off the burner, cover it with a lid and leave it, never use water, and leave and call 911 if fire spreads into the hood or cabinets. ### Why can't I use speed 4 on my BEST WPP1? Heat Sentry has blocked it for 10 minutes after sensing high heat inside the hood. Speed 3 remains available and speed 4 returns afterward. ### Is a flashing speed 4 on the WPP1 dangerous? It means the hood got very hot, so check for flame first. If the cooking is under control, it is a protective pause rather than a breakdown. ### How do I switch off a BEST WPP1 during Heat Sentry? The blower button will not do it. BEST says to turn the power off at the main electrical panel if the blower has to stop. --- **[Read on the site: BEST WPP1 speed 4 flashing and stuck on speed 3: Heat Sentry is protecting the hood](https://rangehooderepair.center/error-codes/best-speed-4-flashing/)** **[Book a visit with RangeHoodeRepair.center](https://rangehooderepair.center/schedule/)**