Written by
Marcus Hale Appliance Repair Content SpecialistPublished September 11, 2026Updated October 20, 2026
Error codeE3
ApplianceRefrigerator
Quick answer
E3 on a DCS RF24D refrigerated drawer is an out-of-range fault on the evaporator thermistor, sensor B.
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
Evaporator thermistor (sensor B) fault, out-of-range, on RF24D refrigerated drawers.
An E3 on a DCS RF24D refrigerated drawer reports an out-of-range fault on the evaporator thermistor, called sensor B. The display flashes the code and the alarm sounds six times each minute.
Reset
Disconnect the power supply and reconnect it. That is the only reset. When the code returns, the service manual points a technician to disconnected or shorted thermistor wires, or the thermistor itself.
If E3 keeps coming back on a DCS drawer in Los Angeles, call (310) 616-5236. The refrigerator repair page explains more. Tell the technician the code and what you tried.
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.
