--- title: "Breezaire HI: the sensor is reading above 99°F" description: "What HI means on Breezaire HI: the sensor is reading above 99°Fs, what to check before booking, and when it is not a failure at all." url: "https://winecellarrepair.center/error-codes/breezaire-hi/" --- # Breezaire HI: the sensor is reading above 99°F HI flashes when the temperature input goes above 99°F. ## What HI actually means. HI flashes when the temperature input goes above 99°F. A cellar anywhere near that hot would normally have tripped the overheat shutdown first, so we test the sensor, its connection and the position of any bottle probe before anything else. Breezaire wine cellar cooling unit display · also shown as Hi What to do when HI shows on the wine cellar cooling unit ### Kind of code Sensors and probes The controller has lost a sensible reading from one of its probes: the one sampling the cellar air, the one on the evaporator coil, or on a remote probe the lead that runs out to a rack. With no number it can trust, the unit may chill the room well below 55°F, stop and start every few minutes, or run on without end. A probe unplugged during a rack install, pinched behind a board or sitting in a draft from the door is ruled out before a new one is ordered. ### Usually leads to Cellar controller and sensor repair Getting the controller, its display and its probes to read the cellar truthfully and call for cooling at the right time. ### Shows up as Cellar Cooling Unit Error Code A cellar cooling unit error code appears as letters or digits on the controller, a flashing reading, a blinking light on the unit, or an alarm tone, sometimes while the cellar still holds its temperature. ### Make Breezaire Visits to cellars cooled by a Breezaire unit, starting with a thermometer among the racks and a hand at the exhaust grille. ### Source Breezaire Sentry III Plus Controller owner's manual Sentry III and Sentry III Plus controllers on WKL through-the-wall units and WKSL split systems. Older WKS splits built before mid-2010 used a manual thermostat and show none of these codes. ## Before you book, in this order. Each step comes from Breezaire's own guidance for HI on its wine cellar cooling units. Follow it to the end: the last card says whether this is a visit. 01 Check the cellar with a separate thermometer to see whether the room is actually hot. 02 If a bottle probe is fitted, make sure it has not ended up near the warm exhaust side or a light fixture. 03 Do a manual reset by holding WARMER for at least 5 seconds and see whether the reading comes back to normal. 04 If HI stays, book a visit to test the sensor. ### Still there? It usually turns into [cellar controller and sensor repair](https://winecellarrepair.center/services/cellar-controller-and-sensor-repair/). Book with the code and the model number. ### What not to do HI is not the AL warning, which flashes when a working sensor sees the cellar above your alarm point. If the room really is hot and the unit has stopped, the display shows OH. ## What you may notice with it. The wine cellar cooling unit problems HI tends to arrive with. Answer these at the wine cellar cooling unit before anyone is booked. [All problems](https://winecellarrepair.center/problems/) Before you call ### [Cellar Cooling Unit Error Code](https://winecellarrepair.center/problems/cellar-cooling-unit-error-code/) [All 8 causes, cheapest first](https://winecellarrepair.center/problems/cellar-cooling-unit-error-code/) It also comes with - [**Wine Cellar Too Warm**](https://winecellarrepair.center/problems/cellar-too-warm/) Problem ### Cellar Cooling Unit Error Code 8 causes, cheapest first Where HI usually leads ## Cellar controller and sensor repair. **Air or coil probe, display, transformer or control board · moderate.** Book a visit [What the job involves](https://winecellarrepair.center/services/cellar-controller-and-sensor-repair/) ## Breezaire wine cellar cooling units. Visits to cellars cooled by a Breezaire unit, starting with a thermometer among the racks and a hand at the exhaust grille. [Breezaire wine cellar cooling unit repair](https://winecellarrepair.center/brands/breezaire/) More Breezaire codes [E1](https://winecellarrepair.center/error-codes/breezaire-e1/) [AL](https://winecellarrepair.center/error-codes/breezaire-al/) [OH](https://winecellarrepair.center/error-codes/breezaire-oh/) [Er](https://winecellarrepair.center/error-codes/breezaire-er/) [LO](https://winecellarrepair.center/error-codes/breezaire-lo/) Sensors and probes on other makes [CellarCool E1](https://winecellarrepair.center/error-codes/cellarcool-e1/) [CellarPro P1](https://winecellarrepair.center/error-codes/cellarpro-p1/) [WhisperKOOL E1](https://winecellarrepair.center/error-codes/whisperkool-e1/) [Wine Guardian !3](https://winecellarrepair.center/error-codes/wine-guardian-alarm-3/) [Wine-Mate P1](https://winecellarrepair.center/error-codes/wine-mate-p1/) [All 10 codes of this kind](https://winecellarrepair.center/error-codes/#family-sensor) Breezaire builds this ### Through-the-wall cellar cooling unit A self-contained box set into an opening in the cellar wall: its cold face blows into the wine room, and its warm face breathes out into the room next door. Breezaire builds this ### Split-system cellar cooling An evaporator inside or beside the cellar and a condensing unit outside or in another room, joined by an insulated copper line set and charged on site. ## In Breezaire's own words > if above 99°F (37°C) it will flash “HI”. [Breezaire Sentry III Plus Controller owner's manual](https://breezaire.com/wp-content/uploads/2023/06/SENTRY-III-Owners-Manual.pdf) [Breezaire Sentry III Plus Controller owner's manual](https://breezaire.com/wp-content/uploads/2023/06/SENTRY-III-Owners-Manual.pdf) [Breezaire Service and Tech Help](https://breezaire.com/service-tech-help/) Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Sentry III and Sentry III Plus controllers on WKL through-the-wall units and WKSL split systems. Older WKS splits built before mid-2010 used a manual thermostat and show none of these codes. ## Breezaire HI wine cellar cooling unit 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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Check the cellar with a separate thermometer to see whether the room is actually hot. If it comes back, it needs a visit. ### Can a Breezaire show HI while the cellar is cool? Yes, because HI only means the input is over 99°F. A thermometer in the room settles whether the problem is the reading or the room. ### Could a bottle probe cause HI on a Breezaire? A probe cord routed past the warm side of the unit or near a hot fixture can read far above the room. Moving it and checking the display again is a quick first test. ### Should the Sentry III controller be replaced for HI? Not before the sensor is tested. Breezaire sells the controller and shows how to swap it, but a bad sensor or connection is a simpler place to start. --- **[Read on the site: Breezaire HI: the sensor is reading above 99°F](https://winecellarrepair.center/error-codes/breezaire-hi/)** **[Book a visit with WineCellarRepair.center](https://winecellarrepair.center/schedule/)**