--- title: "True Residential refrigerator showing Door ajar alarm" description: "What Door ajar alarm means on True Residential refrigerators, what to check before booking, and when it is not a failure at all." url: "https://refrigeratorrepair.center/error-codes/true-door-ajar-alarm/" --- # True Residential refrigerator showing Door ajar alarm The alarm beeps and the notification icons appear when the door has been open too long. ## What Door ajar alarm actually means. The alarm beeps and the notification icons appear when the door has been open too long. On TR-42 and TR-48 columns that is more than 5 minutes. On the 15 inch and 24 inch undercounter units it is 7 minutes. It is an alert you can switch on or off with the ALARM key. True Residential refrigerator display · also shown as door ajar, DOOR ALARM IS ON What to do when Door ajar alarm shows on the refrigerator ### Kind of code Mode, not a failure A setting somebody chose, or an alert it raised on purpose — a showroom mode, a door or power alarm. Nothing has broken and no part is needed. ### Usually leads to No repair Close the door and check that nothing is keeping it from sealing. ### Shows up as Refrigerator Not Cooling The compartment is warm but the appliance still has power and still makes noise. ### Make True Residential Commercial-derived residential refrigeration: columns, undercounter units and glass-door cabinets. ### Source True Residential TR-42 / TR-48 Install Manual, Rev. C, electronic control operation (true-residential.com PDF) 5 minutes on TR-42/TR-48 columns; 7 minutes on the 15 inch and 24 inch undercounter models. ## Before you book, in this order. Each step comes from True Residential's own guidance for Door ajar alarm on its refrigerators. Follow it to the end: the last card says whether this is a visit. 01 Close the door and check that nothing is keeping it from sealing. 02 To silence the buzzer on a column model, press the key the manual shows for stopping the alarm. 03 To turn the feature on or off, press ALARM. The display confirms DOOR ALARM IS ON or DOOR ALARM IS OFF. ### Cleared? Nothing needed repairing. If the refrigerator does not settle back to temperature, that is a separate problem. ### What not to do It does not mean the unit is failing to cool. The high temperature alarm is separate and waits an hour. ## What you may notice with it. The refrigerator problems Door ajar alarm tends to arrive with. Answer these at the refrigerator before anyone is booked. [All problems](https://refrigeratorrepair.center/problems/) Before you call ### [Refrigerator Not Cooling](https://refrigeratorrepair.center/problems/refrigerator-not-cooling/) [All 7 causes, cheapest first](https://refrigeratorrepair.center/problems/refrigerator-not-cooling/) It also comes with - [**Refrigerator Showing an Error Code**](https://refrigeratorrepair.center/problems/refrigerator-error-code/) Food safety applies ### Refrigerator Not Cooling 7 causes, cheapest first No repair indicated ## Nothing to repair. A setting somebody chose, or an alert it raised on purpose — a showroom mode, a door or power alarm. Nothing has broken and no part is needed. [How to read what your refrigerator is telling you](https://refrigeratorrepair.center/problems/refrigerator-error-code/) ## Read these before the visit. Short guides that make the call quicker and the diagnosis cheaper. [All guides](https://refrigeratorrepair.center/guides/) What you can check yourself ### Where the model number hides, and why nothing works without it Error codes ### All 247 codes, by make ## True Residential refrigerators. Commercial-derived residential refrigeration: columns, undercounter units and glass-door cabinets. [True Residential refrigerator repair](https://refrigeratorrepair.center/brands/true/) More True Residential codes [REF](https://refrigeratorrepair.center/error-codes/true-ref/) [Communication Error](https://refrigeratorrepair.center/error-codes/true-communication-error/) [High temperature alarm](https://refrigeratorrepair.center/error-codes/true-high-temperature-alarm/) [Showroom Mode](https://refrigeratorrepair.center/error-codes/true-showroom-mode/) Mode, not a failure on other makes [Samsung OF OF](https://refrigeratorrepair.center/error-codes/samsung-of-of/) [LG OF F](https://refrigeratorrepair.center/error-codes/lg-of-f/) [Whirlpool PO](https://refrigeratorrepair.center/error-codes/whirlpool-po/) [KitchenAid PO](https://refrigeratorrepair.center/error-codes/kitchenaid-po/) [GE PF](https://refrigeratorrepair.center/error-codes/ge-pf/) [Frigidaire PF](https://refrigeratorrepair.center/error-codes/frigidaire-pf/) [Sub-Zero H2 LO](https://refrigeratorrepair.center/error-codes/sub-zero-h2-lo/) [Viking CL](https://refrigeratorrepair.center/error-codes/viking-cl/) [All 82 codes of this kind](https://refrigeratorrepair.center/error-codes/#family-mode) True Residential builds this ### Built-in refrigerator Flush with the cabinets, serviced from the front, and almost always repaired rather than replaced. True Residential builds this ### Refrigerator column Separate refrigerator and freezer towers, each with its own sealed system — so a failure stays on one side. True Residential builds this ### Undercounter refrigerator A single 15 to 24 inch unit under the worktop — front-vented, tightly enclosed, and easily starved of air. ## In True Residential's own words > The door ajar alarm beeps continuously when the door is left open for more than 5 minutes. [True Residential TR-42 / TR-48 Install Manual, Rev. C, electronic control operation (true-residential.com PDF)](https://true-residential.com/wp-content/uploads/2020/01/848062-TR-42-48-C-Install-Manual_REV_C_EN.pdf) [True Residential 15 inch and 24 inch Undercounter Install Guide and User's Manual, "B" & "C" revisions (true-residential.com PDF)](https://true-residential.com/wp-content/uploads/2021/03/975557_TRL-15_24-B-C-Install-Manual_REV_E_EN_FULL-MANUAL.pdf) Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. 5 minutes on TR-42/TR-48 columns; 7 minutes on the 15 inch and 24 inch undercounter models. ## True Residential Door ajar alarm refrigerator 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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Close the door and check that nothing is keeping it from sealing. ### How long can my True door stay open before the alarm beeps? More than 5 minutes on TR-42 and TR-48 columns, and 7 minutes on the 15 inch and 24 inch undercounter units. Closing the door so it seals ends it. It is an alert, not a cooling issue. ### Can I switch off the door ajar alarm on my True? Yes, pressing ALARM toggles it on or off, and the display confirms which. The high temperature alarm is separate and waits for an hour at the limit. Leaving the door alarm on helps catch a door that did not seal. --- **[Read on the site: True Residential refrigerator showing Door ajar alarm](https://refrigeratorrepair.center/error-codes/true-door-ajar-alarm/)** **[Book a visit with RefrigeratorRepair.center](https://refrigeratorrepair.center/schedule/)**