Dacor Range, Oven, Cooktop Error Code C90

The C90 code on a Dacor range, oven, or cooktop indicates that the appliance detected a power loss event. The control board logs this code whenever it experiences an interruption in power supply. It does not necessarily indicate a failed component. Clearing the code and retesting cooking modes is the recommended first action.

If the C90 code was caused by a one-time power interruption such as a brief outage or tripped breaker, the appliance is generally safe to use after the code is cleared and cooking modes are confirmed to work normally. If the code keeps returning, avoid extended unattended use until the underlying cause is identified.

If the C90 is caused by an external power event, there may be no repair cost at all beyond your time to reset the breaker and clear the code. If wiring repairs or a terminal block replacement are needed, costs typically range from around $75 to $200 for parts and labor. A control board replacement, if required, can range from $200 to $500 or more depending on the model.

Yes, in most cases cycling power at the circuit breaker and then clearing the failure code through the control panel will resolve the C90 alert if the original power interruption was an isolated event. If the code returns after clearing, further diagnostics are needed to identify a recurring power supply issue.

Start by resetting the circuit breaker for the appliance and then clearing the C90 failure code from the control panel. Retest all cooking modes to confirm normal operation. If the code returns, inspect the terminal block connections, power cord, and household circuit voltage, as a recurring code points to an ongoing power supply problem.