Fisher & Paykel Cooktop Error Code F5

F5 indicates a gas calibration fault on the cooktop. During its calibration sequence, the cooktop was unable to confirm successful burner ignition. The fault points to one of three issues: the flame sensor is not working, the burner is not igniting, or the gas valve is jammed and not rotating to allow gas flow.

No. When F5 is active, the affected burner is disabled by the control system as a safety precaution. Attempting to override or repeatedly force ignition while a gas valve or flame sense fault is present could result in unburned gas accumulating near the cooktop. Stop using the affected burner and address the fault before resuming normal operation.

Repair costs depend on which component has failed. Cleaning or reconnecting a sensor or igniter wire is low cost and may only involve a service call fee, typically in the range of $75 to $150. Replacing an igniter or flame sensor generally adds $50 to $150 in parts. A gas valve replacement is a more involved repair and could bring the total into the $200 to $400 range including labor, depending on your location and the technician's rates.

Some causes of F5 can be addressed without professional help, such as cleaning a contaminated flame sensor electrode or clearing a blocked igniter port. However, testing a gas valve for proper operation or diagnosing a control board fault involves working near gas components, which carries safety risks. If cleaning and inspecting the igniter and sensor area does not resolve the fault, a qualified technician should handle further diagnosis.

A power reset may temporarily clear the fault display, but the F5 code will return if the underlying issue has not been corrected. The calibration sequence runs each time the burner is activated, so if the flame sensor, igniter, or gas valve is still faulty, the error will reappear immediately. A reset alone is not a fix.