Dacor Dishwasher Error Code F9

The F9 code on a Dacor dishwasher signals a heater failure, meaning the appliance detected that water temperature did not increase as required during a cycle. The control board monitors temperature continuously and triggers this code when the heating system fails to reach its target. Common culprits include the heating element, temperature sensor, wiring, or the control board itself.

You should not continue running the dishwasher while F9 is active. The appliance will not heat water to the proper temperature, meaning dishes will not be adequately cleaned or sanitized. In some cases the cycle may stop on its own, but continued attempts to run it without resolving the fault could place additional stress on other components.

Resetting the dishwasher by cutting power may temporarily clear the F9 code, but it will return as soon as the appliance runs a cycle and the heating fault is detected again. A reset does not fix the underlying problem. Proper diagnosis and repair of the failed component are required to permanently resolve the error.

Some causes of the F9 error, such as a loose connector or minor wiring issue, can be addressed by a knowledgeable DIYer comfortable working with appliance electrical components. However, replacing the heating element, thermistor, or control board requires disassembly of the dishwasher and basic electrical testing skills. If you are not confident working around electrical components, it is best to contact a qualified appliance technician.

Repair costs depend on which component has failed. A replacement heating element typically ranges from $50 to $150 for the part, while a thermistor or temperature sensor is generally less expensive. Control board replacements are the most costly, often ranging from $150 to $400 or more for the part alone. Adding professional labor costs will increase the total, generally ranging from $100 to $200 depending on your location and the complexity of the repair.