Dacor Range, Oven, Cooktop Error Code C23

C23 on a Dacor Heritage appliance means the control board ambient temperature has exceeded 165°F, triggering a protective shutdown. The oven turns off to protect its electronics, but the cooling fans stay on to bring the temperature back down. Normal operation resumes automatically once the ambient temperature at the control board drops to 122°F.

No. When C23 is active, the oven has already shut itself down as a protective measure. You should not attempt to override or reset the unit and resume cooking until the cooling fans have had time to run and the appliance has cooled. Repeatedly forcing the oven to restart while the underlying cause is unresolved risks permanent damage to the control board.

Repair costs vary depending on the cause. If only cleaning or improving ventilation is needed, there may be no parts cost at all. A cooling fan replacement typically runs in the range of $75 to $200 for the part, plus labor if a technician is involved. Control board replacement on a Dacor Heritage unit is more significant, with parts often ranging from $200 to $500 or more depending on the specific model, plus diagnostic and labor fees.

Some causes of C23 are owner-serviceable, such as clearing blocked vents, removing debris from around the appliance, or verifying that installation clearances are correct. If the error persists after addressing airflow, diagnosing and replacing a cooling fan or control board requires disassembly and comfort working with appliance electronics, so many homeowners prefer to call a technician for those steps.

A power reset may clear the code temporarily, but C23 will return if the root cause has not been addressed. The appliance is designed to resume operation on its own once the ambient temperature falls back to 122°F, so in many cases a manual reset is not even necessary. If the fault reappears consistently, investigate ventilation, fan function, or control board condition before relying on resets.