Dacor Oven Error Code C35

C35 on a Dacor oven means the relay board has detected a shorted ambient temperature thermistor. The ambient thermistor is a resistance-based sensor that monitors internal cabinet or electronics bay temperature. When its resistance drops to near zero due to a short circuit, the relay board logs this fault code. The oven will need the thermistor, wiring harness, and relay board inspected to identify the exact failure point.

It is not recommended to continue using the oven while C35 is active. The ambient thermistor helps the relay board monitor internal temperatures to protect electronics from overheating. Operating without a functioning ambient sensor could allow electronic components to overheat without any protective response from the control system.

A power reset by turning off the circuit breaker for 60 seconds may temporarily clear the C35 code, but it will return if the underlying fault is still present. Because the code is triggered by a hardware condition, specifically a shorted thermistor or wiring fault, the error will persist or reappear until the defective component is identified and replaced.

A knowledgeable DIYer with a multimeter can test the ambient thermistor resistance and inspect the wiring harness for visible damage. If the thermistor is confirmed shorted, replacing it is a manageable repair. However, if the relay board itself is faulty, replacement involves high-voltage components and is generally better handled by a qualified technician.

Repair costs vary depending on the failed component. A replacement ambient thermistor typically costs in the range of $15 to $60 for the part. If the relay board requires replacement, parts alone can range from $150 to $400 or more, and professional labor will add to the total cost depending on your service provider.