Dacor Range, Oven, Cooktop Error Code E3

On the Dacor DTF364SIWS, the E3 code specifically refers to a refrigerator air sensor error. The control board has detected that the air temperature sensor circuit is open, shorted, or disconnected. This prevents the board from receiving accurate temperature data for the refrigerator compartment.

The E3 code is not an immediate safety hazard, but it can affect food safety. If the control board cannot read the air sensor, it may not regulate the refrigerator temperature correctly, which could allow food to reach unsafe temperatures. Address the fault promptly to ensure proper cooling performance.

A power reset may temporarily clear the E3 code, but the error will return if the underlying sensor or wiring fault is still present. The code will continue to appear until the open circuit, short, or disconnected sensor is properly diagnosed and corrected. Resetting without repairing the root cause does not resolve the problem.

In many cases, yes. Start by checking the sensor wiring harness for loose or disconnected connectors, which requires no special tools. If the wiring is intact, use a multimeter to test the thermistor resistance. If the sensor has failed, replacing it is a straightforward repair that many experienced DIYers can handle, though comfort with basic electrical testing is helpful.

If the fix is simply reseating a disconnected connector, there may be no parts cost at all. A replacement air temperature thermistor sensor typically runs in the range of $20 to $75 for parts. If a service technician is needed for diagnosis and repair, expect total costs in the range of $100 to $300 depending on labor rates and parts required.