Whirlpool Dishwasher Error Code F3

F3 on a Whirlpool dishwasher means the heating system has been flagged as defective. The control board monitors water temperature during the cycle and requires a minimum rise of 1.5 degrees Celsius every 10 minutes. If the water fails to heat at that rate across three consecutive checks over 25 minutes, the F3 code is triggered and the cycle stops. The fault typically points to the heating element, the RE2 relay on the control board, or the NTC temperature sensor.

It is not recommended to continue running the dishwasher with an active F3 error. When this fault is present, the water is not reaching the required temperature, which means dishes are not being sanitized effectively. Additionally, depending on the nature of the fault, running the appliance repeatedly with a failed heating circuit could place additional stress on the control board.

Resetting the dishwasher may temporarily clear the F3 code, but the fault will return once the appliance runs another cycle and the control board performs its heating checks again. Because F3 is triggered by a measured condition (insufficient heating rate detected across multiple checks), it will continue to appear until the underlying component fault is diagnosed and repaired.

A knowledgeable DIYer can diagnose F3 by testing the heating element for the specified resistance of 24.5 ohms using a multimeter, and by inspecting the NTC sensor values. Replacing a heating element is a moderately involved repair that many experienced DIYers can complete. However, if the fault is traced to the RE2 relay on the control board, that repair is more complex and may require soldering skills or a full board replacement, which is better suited to a technician.

Repair costs vary depending on which component has failed. A replacement heating element typically costs between 30 and 80 dollars for the part alone, with labor adding 75 to 150 dollars if a technician is used. A control board replacement, if the RE2 relay cannot be repaired independently, can range from 100 to 250 dollars for the part plus labor costs. An NTC sensor is generally the least expensive component to replace.