Kenmore Oven Error Code F44

F44 indicates that the Appliance Control Board has detected an abnormally high speed from the microwave external cooling fan, as measured by the board's tachometer input. The most common cause is a supply voltage to the fan that exceeds 120VAC by more than 10%. The code can also point to a fault in the control board's tachometer circuit if voltage levels check out as normal.

Continued use is not recommended until the cause of F44 is identified. An overvoltage condition affecting the cooling fan could indicate a broader electrical supply problem that may damage other components or create a safety hazard. It is best to stop using the appliance and have it inspected before resuming operation.

Repair costs vary depending on the root cause. If the issue is an overvoltage condition requiring an electrician, electrical service fees typically range from $100 to $300 or more. If the Appliance Control Board needs replacement, parts and labor combined can range from $150 to $400 or higher depending on the specific board and local labor rates. A fan motor replacement generally falls in the lower to mid range of that estimate.

Some basic diagnostic steps are within reach for a knowledgeable DIYer, including visually inspecting the fan for obstructions and checking that nothing is blocking airflow around the fan assembly. However, measuring live 120VAC circuit voltage and diagnosing or replacing the Appliance Control Board involve working with line voltage, which carries a risk of serious injury if proper precautions are not taken. A qualified appliance technician is recommended for any steps involving electrical measurement or component replacement.

A reset may temporarily clear the F44 code, but if the underlying cause such as overvoltage or a faulty control board is still present, the fault will return during the next use. Clearing the code without addressing the root cause does not fix the problem and could allow a potentially damaging condition to persist.