Written by
Theo Garrison Appliance Care EditorPublished October 27, 2026
VERIFIED
Error codedo
ApplianceRefrigerator
The door alarm
Leave the door of a DCS RF24RE3 or RF24LE3 open longer than five minutes and the refrigerator reacts: the alarm sounds, the display shows do, and the Alarm LED lights.
Stopping it
Shut the door, and the alarm ends.
Want quiet before then? Press any key.
Why a long-open door matters
The manual points out that an extended open door can lead to a high temperature alarm. If that alarm occurs, it says to make sure the perishables are safe.
Related alarms
A high temperature alarm can follow a door left open for long.
Indoor ActiveSmart models report faults differently; for instance code 10 is a refrigerator sensor issue shown by beeps or LEDs, and code 49 is an electronic communication error.
Outdoor refrigerator service in the Bay Area
If do stays on after the door is closed, (415) 969-2271 is the number for San Francisco and Bay Area outdoor refrigerator owners; DCS refrigerator repair explains our service. Have the model number and the steps you tried ready.
Model compatibility: DCS reuses codes across series and model years, so do may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.
Plain language
What this code means
Door open for more than five minutes; the alarm sounds and the Alarm LED lights until the door closes.
Important safety warning. Do not attempt repairs involving electrical components, gas, water lines, refrigerant or sealed systems. Unplug the appliance if it is safe to reach the outlet, and leave internal diagnostics to a qualified technician.
Seeing this code on your DCS appliance?
Book a specialist visit for a clear estimate and approval before any repair.
Dual-tap, left-hinge 24-inch outdoor beer dispenser from the DCS outdoor refrigeration line. Repair help for pouring, cooling and door problems around the…
You submit a request with your appliance model and symptom, we confirm an appointment window, and a technician performs an on-site diagnosis. You then receive a clear estimate and decide whether to proceed before any repair begins.
Yes. We provide an upfront estimate after diagnosis. No parts are ordered or installed until you approve the work, so there are no surprise charges.
Replacement parts are selected for the exact model and confirmed with you before ordering or installation.
Service areas are listed on the Locations page. Contact us with your ZIP code to confirm current coverage for your address.
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