Written by
Theo Garrison Appliance Care EditorPublished October 27, 2026
VERIFIED
Error codeE3
ApplianceRefrigerator
Meaning of E3
An RF24D refrigerated drawer that flashes E3 is reporting that the evaporator thermistor, designated sensor B, is reading outside its range. A six-times-per-minute alarm accompanies the flashing.
Reset method
The drawer must lose power and then regain it. The manual lists no alternative.
Persistent E3
The service manual directs a technician to look for disconnected or shorted thermistor wiring and to check the thermistor.
Related codes
E4 is the same kind of fault on the display thermistor, sensor A.
When E3 comes back on a drawer in San Francisco or the Bay Area, ring (415) 969-2271 or open DCS refrigerator repair. Tell us the code and the drawer’s model number.
Model compatibility: DCS reuses codes across series and model years, so E3 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
E3 is an out-of-range fault on the evaporator thermistor, sensor B, of DCS RF24D refrigerated drawers.
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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