Written by
Theo Garrison Appliance Care EditorPublished October 27, 2026
VERIFIED
Error code22
ApplianceRefrigerator
Sensor in the water tank
The ActiveSmart refrigerators in the RS/RF range do not print their fault codes anywhere, so this entry exists to translate what you hear and see.
A water tank sensor issue is what code 22 reports. Look and listen rather than read: the refrigerator gives a number of alarm beeps or a binary pattern of flashing LEDs.
Applicable refrigerators
DCS RS/RF series, ActiveSmart, indoor integrated.
How to respond
Stop the beeping using the alarm mute button on the ActiveSmart refrigerator.
Call for a service technician to handle the sensor issue.
For San Francisco and Bay Area homes, phone (415) 969-2271, then compare notes with DCS refrigerator repair. Read out the code, the model number and anything you tried, such as muting the alarm.
Model compatibility: DCS reuses codes across series and model years, so 22 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
A water tank sensor issue, reported through alarm beeps or binary LED flashes.
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.
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