--- title: "WhisperKOOL E10: the controller's clock battery is dead" description: "What E10 means on WhisperKOOL E10: the controller's clock battery is deads, what to check before booking, and when it is not a failure at all." url: "https://winecellarrepair.center/error-codes/whisperkool-e10/" --- # WhisperKOOL E10: the controller's clock battery is dead E10 is a reminder, not a cooling problem. ## What E10 actually means. E10 is a reminder, not a cooling problem. The digital controller keeps time with a small clock battery, and when it runs down the controller shows E10. WhisperKOOL states that a dead clock battery does not affect how the unit cools. WhisperKOOL wine cellar cooling unit display What to do when E10 shows on the wine cellar cooling unit ### Kind of code Power and controller The unit saw its supply dip, surge or drop out, or the controller has lost contact with the board it drives. The cause is as often a shared circuit, a tripped GFCI outlet, a loose connection or a storm outage as the unit itself. A breaker that will not stay on or a scorched smell means switching the circuit off at the panel, standing dry and away from the unit, and keeping the cellar door closed until the technician arrives. ### Usually leads to Wine cellar cooling diagnostic visit A visit that reads the cellar, the room the heat goes to and the cooling unit itself, and ends with one named cause, whether it is a part or the room. ### Shows up as Cellar Cooling Controller Display Blank A cellar cooling controller display blank shows nothing at all, flickers, shows half a number, or ignores its buttons, sometimes while the unit keeps cooling and sometimes while it stops. ### 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) Digital controller on Platinum Split, Ceiling Mount, Extreme tiR and Phantom models. ## Before you book, in this order. Each step comes from WhisperKOOL's own guidance for E10 on its wine cellar cooling units. Follow it to the end: the last card says whether this is a visit. 01 Confirm the cellar is holding temperature; it should be, since E10 does not touch cooling. 02 Replace the clock battery as your model's manual describes, or have it changed at the next visit. 03 If other codes appear with E10, deal with those first. ### Still there? It usually turns into [wine cellar cooling diagnostic visit](https://winecellarrepair.center/services/diagnostic-visit/). Book with the code and the model number. ### What not to do E10 is not a power supply issue and does not mean the unit lost its settings. It only concerns the clock, which the unit does not need to cool. ## What you may notice with it. The wine cellar cooling unit problems E10 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 Controller Display Blank](https://winecellarrepair.center/problems/cellar-controller-display-blank/) [All 4 causes, cheapest first](https://winecellarrepair.center/problems/cellar-controller-display-blank/) It also comes with - [**Cellar Cooling Unit Error Code**](https://winecellarrepair.center/problems/cellar-cooling-unit-error-code/) Problem ### Cellar Cooling Controller Display Blank 4 causes, cheapest first Where E10 usually leads ## Wine cellar cooling diagnostic visit. Book a visit [What the job involves](https://winecellarrepair.center/services/diagnostic-visit/) ## 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/) [EA](https://winecellarrepair.center/error-codes/whisperkool-ea/) [AH1](https://winecellarrepair.center/error-codes/whisperkool-ah1/) [AL1](https://winecellarrepair.center/error-codes/whisperkool-al1/) [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/) Power and controller on other makes [CellarCool E7](https://winecellarrepair.center/error-codes/cellarcool-e7/) [Wine Guardian !4](https://winecellarrepair.center/error-codes/wine-guardian-alarm-4/) [Wine-Mate CA](https://winecellarrepair.center/error-codes/wine-mate-ca/) [All 6 codes of this kind](https://winecellarrepair.center/error-codes/#family-power) 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 > Clock battery is dead [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 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 Ceiling Mount 4K/8K H.E. owner's manual (10/2023)](https://whisperkool.com/wp-content/uploads/2023/11/WK-Ceiling-Mount-4K_8K-HE-OM-101023.pdf) Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Digital controller on Platinum Split, Ceiling Mount, Extreme tiR and Phantom models. ## WhisperKOOL E10 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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Confirm the cellar is holding temperature; it should be, since E10 does not touch cooling. If it comes back, it needs a visit. ### Do I need to fix E10 on my WhisperKOOL right away? No. The unit cools normally with a dead clock battery; replace it when convenient. ### Will my WhisperKOOL lose its setpoint with E10? WhisperKOOL only ties E10 to the clock. Your setpoint and cooling are not affected. ### Where is the clock battery on a WhisperKOOL controller? It is on the controller electronics; the owner's manual for your model shows how to reach it. If you would rather not open anything, it can be changed during a visit. --- **[Read on the site: WhisperKOOL E10: the controller's clock battery is dead](https://winecellarrepair.center/error-codes/whisperkool-e10/)** **[Book a visit with WineCellarRepair.center](https://winecellarrepair.center/schedule/)**