Frigidaire Range Error Code F7 31

F7 31 means the control system has detected a short circuit in the right rear burner potentiometer. The potentiometer is the internal component connected to the right rear control knob that sends a resistance-based signal to the User Interface Board to set the burner heat level. The fault is triggered when that signal falls outside acceptable parameters, indicating a short in the potentiometer, its wiring, or the UIB input circuit.

The right rear burner may not function correctly or at all while this fault is active, and using a burner with a malfunctioning control circuit is not recommended. Other burners may continue to operate normally, but the underlying fault should be diagnosed and repaired before relying on the affected burner. If any unusual behavior such as uncontrolled heat is observed, stop using the range and disconnect power immediately.

Repair costs depend on which component is at fault. A replacement potentiometer is generally a lower-cost part, typically in the range of $20 to $60 for the component alone. If the User Interface Board requires replacement, parts costs are significantly higher, often ranging from $100 to $250 or more depending on the model. Adding professional labor costs will increase the total, so getting a diagnostic estimate from a technician before committing to a repair is advisable.

Some DIYers with electrical repair experience can address this fault by inspecting and replacing the right rear potentiometer or cleaning contaminated connectors. However, diagnosing whether the fault lies in the potentiometer, the wiring harness, or the UIB requires basic electrical testing skills. If the cause is not clear after visual inspection, contacting a qualified technician or the Frigidaire technical support line is recommended.

Disconnecting the range from power for a few minutes may temporarily clear the code, but the fault will return if the underlying problem with the potentiometer or wiring has not been corrected. A reset does not repair a shorted component. A proper repair of the defective part is required for a lasting resolution.