--- title: dor - How the 'Door Open' alarm works description: When a cooler door is open for longer than normal, the SCS Controller can trigger and display an alarm to alert the site manager or staff. --- [Skip to content](https://support.aofrio.com/how-the-door-open-alarm-works#main-content) - [English](https://support.aofrio.com/how-the-door-open-alarm-works) - [Español - México](https://support.aofrio.com/es-mx/cómo-funciona-la-alarma-de-puerta-abierta) - [Português - Brasil](https://support.aofrio.com/pt-br/como-funciona-o-alarme-de-porta-aberta) English Show submenu for translations ![](https://support.aofrio.com/hs-fs/hubfs/e7b764c0-c89a-4e26-92a2-ab6256f23c6a_medium.png?width=100&height=75&name=e7b764c0-c89a-4e26-92a2-ab6256f23c6a_medium.png) Open main navigation Close main navigation - - [English](https://support.aofrio.com/how-the-door-open-alarm-works) - [Español - México](https://support.aofrio.com/es-mx/cómo-funciona-la-alarma-de-puerta-abierta) - [Português - Brasil](https://support.aofrio.com/pt-br/como-funciona-o-alarme-de-porta-aberta) English Show submenu for translations - Contact us Contact us How can we help you? - There are no suggestions because the search field is empty. 1. [Help Center](https://support.aofrio.com/?hsLang=en) 2. [IoT hardware operation & behavior](https://support.aofrio.com/iot-hardware-operation-behavior?hsLang=en) 3. [SCS Controller - Faults & Alarms](https://support.aofrio.com/iot-hardware-operation-behavior?hsLang=en#scs-controller-faults-alarms) January 30, 2025 # dor - How the 'Door Open' alarm works ## When a cooler door is open for longer than normal, the SCS Controller can trigger and display an alarm to alert the site manager or staff. In most situations, simply closing the door again will normally clear the **Door Open (dor)** alarm and return the cooler to normal operation. If the door is loose or 'sagging' it may require further physical adjustment by a refrigeration technician. 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