--- title: "Sub-Zero door alarm — door ajar" description: "What Door alarm chime means on Sub-Zero door alarm — door ajars, what to check before booking, and when it is not a failure at all." url: "https://appliancemaintenance.center/error-codes/sub-zero-door-alarm/" --- # Sub-Zero door alarm — door ajar Sub-Zero's own use-and-care guide has a chime sound once the door has been left ajar for more than 60 seconds, active from the factory, meant to catch a door that has not fully closed before the cabinet warms. ## What Door alarm chime actually means. Sub-Zero's own use-and-care guide has a chime sound once the door has been left ajar for more than 60 seconds, active from the factory, meant to catch a door that has not fully closed before the cabinet warms. Sub-Zero home appliance display What to do when Door alarm chime shows on the home appliance ### Kind of code Temperature The appliance has seen a temperature outside its range and is saying so, and on a maintenance visit the cause is usually outside the sealed system: a door left ajar or a gasket that no longer seals, a condenser coil furred with dust and pet hair, a grille blocked, or a unit squeezed into an alcove with no air around it. Close the door, check the gasket, give the coil air and time, and book coil cleaning; if it will not cool at all, that is a repair. ### Usually leads to Condenser coil cleaning Dust and pet hair brushed and vacuumed off the coil and fan of every cold storage unit in the house. ### Shows up as Door Seal Not Holding: Gaps, Tears and Doors That Drift Open A door seal not holding is a gasket that lets air, heat or water past it: a cold storage door that drifts open, an oven door leaking heat, or a dish care or front-loader door that drips. ### Make Sub-Zero A Sub-Zero lasts decades when its condenser is kept clean, its door seals stay supple and its water filter is changed on schedule, and that is what a visit covers. ### Source Sub-Zero undercounter use and care guide Confirmed in Sub-Zero's undercounter use and care guide; the alarm can be deactivated and reactivated through the same control-panel sequence described in the guide. ## Before you book, in this order. Each step comes from Sub-Zero's own guidance for Door alarm chime on its home appliances. Follow it to the end: the last card says whether this is a visit. 01 Close the door fully and confirm the chime stops. 02 Check that nothing inside, such as a tall container or shelf item, is holding the door open a crack. 03 If the chime continues with the door firmly closed, book a visit to check the door gasket and switch. ### Still there? It usually turns into [condenser coil cleaning](https://appliancemaintenance.center/services/condenser-coil-cleaning/). Book with the code and the model number. ### What not to do The door alarm is not a temperature failure by itself, though a door left open repeatedly will eventually let the cabinet warm; it is also not evidence the gasket has failed unless the chime persists with the door confirmed shut. ## What you may notice with it. The home appliance problems Door alarm chime tends to arrive with. Answer these at the home appliance before anyone is booked. [All problems](https://appliancemaintenance.center/problems/) Before you call ### [Door Seal Not Holding: Gaps, Tears and Doors That Drift Open](https://appliancemaintenance.center/problems/door-seal-not-holding/) [All 6 causes, cheapest first](https://appliancemaintenance.center/problems/door-seal-not-holding/) It also comes with - [**Cold Storage Running Nonstop: Coil Dust, Clearance and Door Seals**](https://appliancemaintenance.center/problems/cold-storage-running-nonstop/) - [**Appliance Maintenance Code or Reminder Light: Filter, Descale, Vent Check**](https://appliancemaintenance.center/problems/appliance-maintenance-code/) Problem ### Door Seal Not Holding: Gaps, Tears and Doors That Drift Open 6 causes, cheapest first Where Door alarm chime usually leads ## Condenser coil cleaning. **Condenser coil and fan cleaned on a refrigerator, freezer, wine or beverage unit or ice maker, drain pan checked · lowest.** Book a visit [What the job involves](https://appliancemaintenance.center/services/condenser-coil-cleaning/) ## Sub-Zero home appliances. A Sub-Zero lasts decades when its condenser is kept clean, its door seals stay supple and its water filter is changed on schedule, and that is what a visit covers. [Sub-Zero home appliance maintenance](https://appliancemaintenance.center/brands/sub-zero/) More Sub-Zero codes [SERVICE flashing](https://appliancemaintenance.center/error-codes/sub-zero-service-flashing/) [CLEAN flashing](https://appliancemaintenance.center/error-codes/sub-zero-clean-flashing/) [REPLACE FILTER lit red](https://appliancemaintenance.center/error-codes/sub-zero-replace-filter/) Temperature on other makes [Gaggenau Continuous audible signal, door open](https://appliancemaintenance.center/error-codes/gaggenau-wine-door-alarm/) [Hestan dA](https://appliancemaintenance.center/error-codes/hestan-outdoor-cooler-da/) [Liebherr Door open alarm](https://appliancemaintenance.center/error-codes/liebherr-door-open/) [True Residential High Temperature Alarm](https://appliancemaintenance.center/error-codes/true-high-temperature-alarm/) Sub-Zero builds this ### Cold storage Upkeep for everything in the house that keeps things cold: refrigerators, freezers, wine and beverage units and ice makers, cleaned and checked before they start struggling. ## In Sub-Zero's own words > A chime indicates the door has been left ajar for more than 60 seconds. The unit is shipped with the door alarm activated. [Sub-Zero undercounter use and care guide](https://www.subzero-wolf.com/-/media/files/united-states/product-downloads/sub-zero-wolf/use-and-care/sub-zero/undercounter-ucg.ashx) Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Confirmed in Sub-Zero's undercounter use and care guide; the alarm can be deactivated and reactivated through the same control-panel sequence described in the guide. ## Sub-Zero Door alarm chime home appliance maintenance, 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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Close the door fully and confirm the chime stops. If it comes back, it needs a visit. ### Can the door alarm be turned off? Yes, using the control-panel sequence Sub-Zero's guide describes, though most households leave it on since it is shipped active as a reminder against a door left ajar. ### Why does my Sub-Zero chime even though the door looks shut? The guide's own troubleshooting for a related light points to checking the door gasket for rips or tears and confirming nothing inside is holding the door off its seal. ### Is 60 seconds the same on every Sub-Zero model? The undercounter guide gives 60 seconds for that line; check the specific model's own guide, since delay times can differ across Sub-Zero's product range. --- **[Read on the site: Sub-Zero door alarm — door ajar](https://appliancemaintenance.center/error-codes/sub-zero-door-alarm/)** **[Book a visit with ApplianceMaintenance.center](https://appliancemaintenance.center/schedule/)**