--- title: "WhisperKOOL AL1: the wine is colder than the low alarm limit" description: "What AL1 means on WhisperKOOL AL1: the wine is colder than the low alarm limits, what to check before booking, and when it is not a failure at all." url: "https://winecellarrepair.center/error-codes/whisperkool-al1/" --- # WhisperKOOL AL1: the wine is colder than the low alarm limit AL1 is the low temperature alarm on the bottle probe, set at the same spread as AH1 for each model (4°F on most current manuals, 8°F on some). ## What AL1 actually means. AL1 is the low temperature alarm on the bottle probe, set at the same spread as AH1 for each model (4°F on most current manuals, 8°F on some). It usually means the unit has kept cooling longer than it should, or that the cellar sits in a cold space. WhisperKOOL coolers do not heat, so a cold room has to be warmed from outside the unit. WhisperKOOL wine cellar cooling unit display · also shown as “AL1” What to do when AL1 shows on the wine cellar cooling unit ### Kind of code Temperature and alarms The controller saw the cellar go past a high or low limit and raised an alarm, sometimes holding the worst reading it logged while the house was empty. The reason can be as small as the cellar door left ajar after a tasting or a long outage, a room gaining heat from new lights or a sunny glass wall, or as serious as cooling that has stopped. Keep the door shut and read a thermometer on a middle rack before touching anything; the alarm is a warning about the collection, not yet a diagnosis. ### Usually leads to Cellar cooling load and room check Measuring the cellar as the cooling unit sees it: insulation, vapor barrier, door, glass and the heat load, to show whether the unit can ever keep up. ### Shows up as Wine Cellar Too Cold A wine cellar too cold feels like stepping into a walk-in: the thermometer sits in the 40s, bottles come out beaded with water, and the unit keeps running long after the room should have been satisfied. ### Make WhisperKOOL WhisperKOOL systems serviced where they are installed, whether the cellar is warming, the coil is frosting or the unit never rests. ### Source WhisperKOOL Platinum Split 4000/8000 owner's manual (01/2022) Shown by both WhisperKOOL controller families: the digital controller on Platinum Split, Ceiling Mount, Extreme tiR and Phantom, and the SC PRO and Slimline LS through-the-wall controller. ## Before you book, in this order. Each step comes from WhisperKOOL's own guidance for AL1 on its wine cellar cooling units. Follow it to the end: the last card says whether this is a visit. 01 Check whether the snowflake is lit; if the unit is cooling while the wine is already cold, turn it off and book a visit. 02 If the cellar is cold because of the season, add gentle heat to the room until the wine returns to the setpoint. 03 Compare the probe with a thermometer in a bottle of water; a calibration offset may be needed. ### Still there? It usually turns into [cellar cooling load and room check](https://winecellarrepair.center/services/cellar-cooling-load-and-room-check/). Book with the code and the model number. ### What not to do AL1 is not a refrigerant problem. If the compressor is off and the room is simply cold, the unit is working as designed. ## What you may notice with it. The wine cellar cooling unit problems AL1 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 Cold](https://winecellarrepair.center/problems/cellar-too-cold/) [All 4 causes, cheapest first](https://winecellarrepair.center/problems/cellar-too-cold/) It also comes with - [**Cellar Cooling Unit Error Code**](https://winecellarrepair.center/problems/cellar-cooling-unit-error-code/) Problem ### Wine Cellar Too Cold 4 causes, cheapest first Where AL1 usually leads ## Cellar cooling load and room check. **Cooling load and room survey · lowest.** Book a visit [What the job involves](https://winecellarrepair.center/services/cellar-cooling-load-and-room-check/) ## WhisperKOOL wine cellar cooling units. WhisperKOOL systems serviced where they are installed, whether the cellar is warming, the coil is frosting or the unit never rests. [WhisperKOOL wine cellar cooling unit repair](https://winecellarrepair.center/brands/whisperkool/) More WhisperKOOL codes [E1](https://winecellarrepair.center/error-codes/whisperkool-e1/) [E2](https://winecellarrepair.center/error-codes/whisperkool-e2/) [E3](https://winecellarrepair.center/error-codes/whisperkool-e3/) [E7](https://winecellarrepair.center/error-codes/whisperkool-e7/) [E10](https://winecellarrepair.center/error-codes/whisperkool-e10/) [EA](https://winecellarrepair.center/error-codes/whisperkool-ea/) [AH1](https://winecellarrepair.center/error-codes/whisperkool-ah1/) [Ad2](https://winecellarrepair.center/error-codes/whisperkool-ad2/) [Ad3](https://winecellarrepair.center/error-codes/whisperkool-ad3/) [COH](https://winecellarrepair.center/error-codes/whisperkool-coh/) [dEF](https://winecellarrepair.center/error-codes/whisperkool-def/) Temperature and alarms on other makes [Breezaire E1](https://winecellarrepair.center/error-codes/breezaire-e1/) [CellarCool AH1](https://winecellarrepair.center/error-codes/cellarcool-ah1/) [CellarPro HA](https://winecellarrepair.center/error-codes/cellarpro-ha/) [KoolR AL](https://winecellarrepair.center/error-codes/koolr-al/) [Wine Guardian Flashing temperature with (!)](https://winecellarrepair.center/error-codes/wine-guardian-high-temperature-alarm/) [Wine-Mate HA](https://winecellarrepair.center/error-codes/wine-mate-ha/) [All 16 codes of this kind](https://winecellarrepair.center/error-codes/#family-temperature) WhisperKOOL 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. WhisperKOOL 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. WhisperKOOL 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 WhisperKOOL's own words > The bottle probe is sensing a temperature that is 8°F below the setpoint [WhisperKOOL Platinum Split 4000/8000 owner's manual (01/2022)](https://whisperkool.com/wp-content/uploads/2022/01/WK-Platinum_Split_4000-8000_OM_NO_UV_220HE_012422.pdf) [WhisperKOOL SC PRO Series owner's manual (12/2022)](https://whisperkool.com/wp-content/uploads/2022/12/WK-SC-Series-OM-22-w-UV-120122.pdf) [WhisperKOOL SC PRO Series owner's manual (12/2022)](https://whisperkool.com/wp-content/uploads/2022/12/WK-SC-Series-OM-22-w-UV-120122.pdf) Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Shown by both WhisperKOOL controller families: the digital controller on Platinum Split, Ceiling Mount, Extreme tiR and Phantom, and the SC PRO and Slimline LS through-the-wall controller. ## WhisperKOOL AL1 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 whether the snowflake is lit; if the unit is cooling while the wine is already cold, turn it off and book a visit. If it comes back, it needs a visit. ### Can a WhisperKOOL warm my cellar if AL1 appears? No. WhisperKOOL cooling units only cool; the manual has you add heat to the room itself. ### Why would a WhisperKOOL keep cooling past its setpoint? A probe out of its bottle, a probe reading wrong or a stuck compressor relay can all do it. That is worth a visit. ### Does AL1 harm the wine in a WhisperKOOL cellar? A few degrees for a short time is not a concern. Bring the room back up steadily. --- **[Read on the site: WhisperKOOL AL1: the wine is colder than the low alarm limit](https://winecellarrepair.center/error-codes/whisperkool-al1/)** **[Book a visit with WineCellarRepair.center](https://winecellarrepair.center/schedule/)**