Dacor Range, Oven, Cooktop Error Code C33

C33 on a Dacor Heritage series appliance means the relay board has detected an ambient temperature above 165°F at its location and has triggered an automatic shutdown to protect the electronics. The cooling fans remain on to bring the temperature down. The oven will not restart until the relay board ambient temperature drops to 122°F or below. This is a thermal protection feature, not always an indication of a failed component.

No. When C33 is active, the oven has already shut down as a protective measure and will not heat until temperatures return to safe levels. Do not attempt to force operation while the error is present. If the error clears and then returns during normal use, stop using the oven and have it inspected before continuing, as repeated overheating can damage control components.

First, verify that the appliance has adequate clearance around all ventilation openings per the installation requirements for your specific Heritage model. Check that the cooling fans are operating and moving air freely. Avoid back-to-back high-temperature cooking cycles without allowing cooldown time in between. If the error recurs despite proper clearances and functioning fans, have the relay board and its thermal sensing circuit inspected by a qualified technician.

The oven will resume operation automatically once the relay board ambient temperature falls back to 122°F, so a manual reset is not always required. However, if C33 returns repeatedly, simply waiting for it to clear does not address the underlying cause. Repeated faults indicate a problem with airflow, the cooling fan, or the relay board's thermal sensor that needs to be diagnosed and corrected.

Repair costs vary depending on the root cause. If the fix is simply adjusting installation clearances or clearing a blocked vent, costs may be limited to a service call fee, typically in the range of $75 to $150. Replacing a cooling fan generally runs $100 to $250 including parts and labor. A full relay board replacement is more expensive, often ranging from $200 to $500 or more depending on parts availability and labor rates in your area.