--- title: "Wine Guardian !1: the high-pressure switch has stopped the system" description: "What !1 means on Wine Guardian !1: the high-pressure switch has stopped the systems, what to check before booking, and when it is not a failure at all." url: "https://winecellarrepair.center/error-codes/wine-guardian-alarm-1/" --- # Wine Guardian !1: the high-pressure switch has stopped the system !1 means the manual-reset high-pressure switch has opened. ## What !1 actually means. !1 means the manual-reset high-pressure switch has opened. It protects the compressor when head pressure climbs, which almost always follows poor airflow across the condenser: a filter packed with dust, a blocked grille or a crushed duct. The system stays off, and the code stays on the screen, until someone presses the reset button on the switch. Wine Guardian wine cellar cooling unit display · also shown as (!1) What to do when !1 shows on the wine cellar cooling unit ### Kind of code Compressor and pressure The sealed system has stepped outside safe limits: a high-pressure switch opened because the heat had nowhere to go, a low-pressure switch opened because refrigerant is short, or the compressor would not start or kept tripping its own overload. Very often the cause is the exhaust side, a closet or garage too hot or too small for the unit, before it is the compressor. Handling refrigerant takes EPA Section 608 certification, and the unit's age weighs heavily on the decision. ### Usually leads to Cellar compressor and sealed system repair Getting the heart of the cellar unit pumping again, from the start capacitor, relay and contactor that give out first to a compressor or a sealed-system restriction. ### Shows up as Wine Cellar Too Warm A wine cellar too warm shows up slowly: the room smells of the house instead of cool stone, a bottle picked from a middle rack feels barely cooler than your hand, and the wall thermometer has crept from the mid 50s into the 60s over a week. ### 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 Shown on the Remote Interface of air-cooled and water-cooled Wine Guardian units. ## Before you book, in this order. Each step comes from Wine Guardian's own guidance for !1 on its wine cellar cooling units. Follow it to the end: the last card says whether this is a visit. 01 Turn the system off at the remote or local controller and keep the cellar door closed so the room holds its temperature longer. 02 Look at the condenser side for a clogged inlet filter, a blocked grille or a collapsed duct; the filter is washable and slides out from the face of the coil. 03 Only after the blockage is cleared, reset the red button as your model's manual shows (behind the condenser-side cover on through-the-wall units, near the compressor on ducted and split units), then restart. 04 If !1 comes back within a day, or you cannot find a blockage, leave the unit off and book a visit; note whether the cellar is passing 65°F. ### Still there? It usually turns into [cellar compressor and sealed system repair](https://winecellarrepair.center/services/cellar-compressor-and-sealed-system-repair/). Book with the code and the model number. ### What not to do !1 is not a sensor or controller problem, and resetting the switch over and over does not fix it. If the cause is a failing condenser fan or an overcharged circuit, the switch will keep tripping until that part is repaired. ## What you may notice with it. The wine cellar cooling unit problems !1 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 Too Warm](https://winecellarrepair.center/problems/cellar-too-warm/) [All 6 causes, cheapest first](https://winecellarrepair.center/problems/cellar-too-warm/) It also comes with - [**Cellar Cooling Unit Exhaust Overheating**](https://winecellarrepair.center/problems/cellar-unit-exhaust-overheating/) - [**Cellar Cooling Unit Not Turning On**](https://winecellarrepair.center/problems/cellar-unit-not-turning-on/) - [**Cellar Cooling Unit Error Code**](https://winecellarrepair.center/problems/cellar-cooling-unit-error-code/) The collection is exposed ### Wine Cellar Too Warm 6 causes, cheapest first Where !1 usually leads ## Cellar compressor and sealed system repair. **Start capacitor, contactor, compressor or sealed-system restriction · moderate to highest.** Book a visit [What the job involves](https://winecellarrepair.center/services/cellar-compressor-and-sealed-system-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 [!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/) [Flashing humidity with (!) below the low limit](https://winecellarrepair.center/error-codes/wine-guardian-low-humidity-alarm/) [- - -](https://winecellarrepair.center/error-codes/wine-guardian-dashes/) 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 > !1 = High Pressure Switch Fault [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) [Wine Guardian help: Resetting the High Pressure Switch (Wayback copy)](https://web.archive.org/web/20220926001917/https://wineguardian.com/help/resetting-the-high-pressure-switch/) Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Shown on the Remote Interface of air-cooled and water-cooled Wine Guardian units. ## Wine Guardian !1 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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Turn the system off at the remote or local controller and keep the cellar door closed so the room holds its temperature longer. If it comes back, it needs a visit. ### Is it safe to reset the Wine Guardian high-pressure switch myself? Pressing the button is simple, but it is only safe after the airflow problem is found and cleared. The switch sits near the compressor or behind a condenser-side cover, so switch the unit off first and do not reach into a running fan. ### Why does my Wine Guardian keep tripping !1 after a reset? Something is still holding the pressure up: a dirty filter or coil, a blocked duct, or a condenser fan that is not running. Repeated trips need a technician with gauges. ### Will my wine be at risk while !1 is on the screen? Yes, slowly. With the compressor off the cellar drifts toward the temperature of the surrounding space, so keep the door shut and watch the reading until the unit is cooling again. --- **[Read on the site: Wine Guardian !1: the high-pressure switch has stopped the system](https://winecellarrepair.center/error-codes/wine-guardian-alarm-1/)** **[Book a visit with WineCellarRepair.center](https://winecellarrepair.center/schedule/)**