Frigidaire Range Error Code F7 42

F7 42 means the control system has detected that the potentiometer for the Right Front burner is reporting an incorrect or out-of-range value. The potentiometer is the sensor behind the burner knob that communicates the selected heat level to the User Interface Board. This fault can be caused by a failed potentiometer, moisture intrusion, a wiring issue, or a problem with the UIB itself.

A power reset by unplugging the range or cycling the breaker may temporarily clear the code, but it will return if the underlying fault is still present. The potentiometer or wiring issue must be identified and corrected for the fault to be permanently resolved. Do not rely on a reset as a long-term fix.

If only the potentiometer needs replacement, parts and labor typically fall in the range of roughly $75 to $200 depending on the specific model and local labor rates. If the User Interface Board is also at fault, repair costs can rise to the $150 to $400 range or more. Getting a diagnostic estimate from a technician before committing to repairs is advisable, especially on older units.

Some causes, like reseating a loose connector or allowing the control panel to dry out after a spill, can be addressed without professional help. However, replacing the potentiometer or UIB involves disassembling the control panel and working with electrical components, which is best suited for experienced DIYers or a qualified technician. If basic inspection does not resolve the fault, contacting the Frigidaire technical line for guidance is recommended.

The affected Right Front burner may not operate correctly or predictably while this fault is active, so it should not be used until the issue is resolved. Other burners and the oven may continue to function normally, but operating any component with an unresolved control fault carries risk. It is best to address the error before resuming normal use of that burner.