--- title: "Wine Guardian low humidity alarm: the cellar air is drier than its limit" description: "What Flashing humidity with (!) below the low limit means on Wine Guardian low humidity alarm: the cellar air is drier than its limits, what to check before…" url: "https://winecellarrepair.center/error-codes/wine-guardian-low-humidity-alarm/" --- # Wine Guardian low humidity alarm: the cellar air is drier than its limit The low humidity alarm flashes the humidity number with the (!) symbol when relative humidity drops below setting 4 and clears when it rises back above it. ## What Flashing humidity with (!) below the low limit actually means. The low humidity alarm flashes the humidity number with the (!) symbol when relative humidity drops below setting 4 and clears when it rises back above it. A cooling unit dries the air as it runs, so a unit running long hours, a very dry season or a humidifier that has stopped can bring it on. Wine Guardian wine cellar cooling unit display · also shown as Low humidity alarm What to do when Flashing humidity with (!) below the low limit shows on the wine cellar cooling unit ### Kind of code Humidity The unit or its hygrometer reads the cellar's air as too dry for the corks or too damp for the labels and the walls. Cooling pulls water out of the air, so a unit that runs long in a leaky room tends to dry it out, while a gap in the vapor barrier, damp ground or a clogged drain can push it the other way. A humidifier or humidity kit, where one is fitted, is checked along with the door seal and the room before a sensor is blamed. ### Usually leads to Cellar humidity control repair Bringing a wine cellar back into its humidity window, roughly 50 to 70 percent, by fixing the humidifier, the fan settings, the drain or the room. ### Shows up as Wine Cellar Humidity Too Low Wine cellar humidity too low shows up on a hygrometer reading under 50 %, in capsules that feel papery, in labels curling at the edges, and after years in a faint fill line dropping in the neck of older bottles. ### Make Wine Guardian Wine Guardian systems examined at the cellar, the ductwork and the equipment space when the air stops holding its temperature or its moisture. ### Source Wine Guardian Remote Interface Operation Guide Wine Guardian Remote Interface controller, used with through-the-wall, ducted, ducted split, ductless split and ceiling-mounted units; the Sentinel-series ducted manuals (Dec 2022) list the same alarms. ## Before you book, in this order. Each step comes from Wine Guardian's own guidance for Flashing humidity with (!) below the low limit on its wine cellar cooling units. Follow it to the end: the last card says whether this is a visit. 01 If a Wine Guardian humidifier is connected, check that it has water and power and that its setpoint is where you want it. 02 Check whether the unit runs almost without stopping; long run times dry the room. 03 If the room stays dry with the humidifier working, book a visit to look at the fan settings and the room. ### Still there? It usually turns into [cellar humidity control repair](https://winecellarrepair.center/services/cellar-humidity-control-repair/). Book with the code and the model number. ### What not to do Low humidity is not a failure of the cooling unit by itself. Without a humidifier, the Wine Guardian only displays humidity and cannot raise it. ## What you may notice with it. The wine cellar cooling unit problems Flashing humidity with (!) below the low limit 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 ### [Wine Cellar Humidity Too Low](https://winecellarrepair.center/problems/cellar-humidity-too-low/) [All 4 causes, cheapest first](https://winecellarrepair.center/problems/cellar-humidity-too-low/) It also comes with - [**Cellar Cooling Unit Running Constantly**](https://winecellarrepair.center/problems/cellar-unit-running-constantly/) - [**Cellar Cooling Unit Error Code**](https://winecellarrepair.center/problems/cellar-cooling-unit-error-code/) Problem ### Wine Cellar Humidity Too Low 4 causes, cheapest first Where Flashing humidity with (!) below the low limit usually leads ## Cellar humidity control repair. **Humidifier module, humidity probe or settings · low to moderate.** Book a visit [What the job involves](https://winecellarrepair.center/services/cellar-humidity-control-repair/) ## Wine Guardian wine cellar cooling units. Wine Guardian systems examined at the cellar, the ductwork and the equipment space when the air stops holding its temperature or its moisture. [Wine Guardian wine cellar cooling unit repair](https://winecellarrepair.center/brands/wine-guardian/) More Wine Guardian codes [!1](https://winecellarrepair.center/error-codes/wine-guardian-alarm-1/) [!2](https://winecellarrepair.center/error-codes/wine-guardian-alarm-2/) [!3](https://winecellarrepair.center/error-codes/wine-guardian-alarm-3/) [!4](https://winecellarrepair.center/error-codes/wine-guardian-alarm-4/) [Flashing temperature with (!)](https://winecellarrepair.center/error-codes/wine-guardian-high-temperature-alarm/) [Flashing temperature with (!) below the low limit](https://winecellarrepair.center/error-codes/wine-guardian-low-temperature-alarm/) [Flashing humidity with (!)](https://winecellarrepair.center/error-codes/wine-guardian-high-humidity-alarm/) [- - -](https://winecellarrepair.center/error-codes/wine-guardian-dashes/) Humidity on other makes [CellarCool EA](https://winecellarrepair.center/error-codes/cellarcool-ea/) [WhisperKOOL EA](https://winecellarrepair.center/error-codes/whisperkool-ea/) Wine Guardian 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. Wine Guardian builds this ### Ducted cellar cooling unit A self-contained cooling unit placed outside the cellar, in a mechanical room, attic or basement, that sends chilled air in and takes return air back through insulated ducts. Wine Guardian 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 Wine Guardian's own words > Flashing humidity number along with (!) symbol will remain on screen until humidity rises above the Low Humidity Alarm set point (Setting 4). [Wine Guardian Remote Interface Operation Guide](https://wineguardian.com/wp-content/uploads/2013/09/Remote_Interface_Controller_Guide_5.4.22-1.pdf) [Wine Guardian Remote Interface Operation Guide](https://wineguardian.com/wp-content/uploads/2013/09/Remote_Interface_Controller_Guide_5.4.22-1.pdf) Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Wine Guardian Remote Interface controller, used with through-the-wall, ducted, ducted split, ductless split and ceiling-mounted units; the Sentinel-series ducted manuals (Dec 2022) list the same alarms. ## Wine Guardian Flashing humidity with (!) below the low limit 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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If a Wine Guardian humidifier is connected, check that it has water and power and that its setpoint is where you want it. If it comes back, it needs a visit. ### Does every Wine Guardian control humidity? Only when a Wine Guardian humidifier is attached. Otherwise the remote reads humidity and alarms on it but cannot add moisture. ### Why is my Wine Guardian cellar dry in winter? Cold outside air holds little moisture, and heated houses are dry. A cellar that runs long hours dries further, so the season and the run time together cause the drop. ### Is a low humidity alarm urgent? Not in the short term. Over months, dry air can shrink corks, so plan a fix rather than leaving it. --- **[Read on the site: Wine Guardian low humidity alarm: the cellar air is drier than its limit](https://winecellarrepair.center/error-codes/wine-guardian-low-humidity-alarm/)** **[Book a visit with WineCellarRepair.center](https://winecellarrepair.center/schedule/)**