Fisher & Paykel Cooktop Error Code F8

The F8 code indicates that the flame detection system has registered a flame on a burner that is not supposed to be operating, and this condition persisted for 20 seconds. The cooktop shuts itself off automatically when this occurs as a safety precaution. The fault is typically caused by a faulty thermocouple, contaminated sensor, or a problem in the flame detection wiring circuit.

Shutting the cooktop off may temporarily clear the display, but the F8 fault will return if the underlying problem in the flame detection circuit has not been fixed. The control board is designed to re-trigger the code after 20 seconds of detecting the wrong flame condition again. A reset alone is not a repair and should not be relied upon as a solution.

Repair costs vary depending on the root cause. Cleaning a contaminated thermocouple is essentially free if done as a DIY task, while replacing a faulty thermocouple typically costs between $30 and $80 for the part plus labor. If the control board is the source of the fault, parts and labor combined can range from $150 to $350 or more. Getting a diagnostic assessment from a certified technician will provide a more accurate estimate for your specific situation.

No, you should not attempt to operate the cooktop after an F8 error until the underlying cause has been identified and corrected. The error involves the gas flame detection system, and continuing to use the appliance before resolving the fault could pose a safety risk. Keep the cooktop powered off and the gas supply shut off until a qualified technician has inspected the unit.

Begin by shutting off the cooktop and the gas supply, then inspect the flame detection circuit at the affected burner position. Check the thermocouple for contamination, damage, or incorrect output, and examine all associated wiring for shorts, pinched insulation, or loose connectors. If the sensor and wiring appear intact, the control board may need to be tested or replaced. This diagnosis is best performed by a technician with access to a multimeter and knowledge of gas appliance circuits.