Fisher & Paykel Cooktop Error Code F11.3

F11.3 is a Trivet/Valve fault code. It means the cooktop's control system detected that the gas valve switch is open while the upper trivet switch reports the trivets are not fully raised, and this condition lasted for more than 6 seconds. The cooktop shuts down to prevent unsafe operation. Diagnosis requires checking both the trivet micro-switches and the gas valve switch.

No, you should not attempt to bypass or continue using the cooktop while F11.3 is active. This fault involves the gas valve switch and trivet position switch, which are part of the cooktop's safety interlock system. Operating the cooktop with a compromised safety switch circuit could create a hazardous condition. Keep the cooktop off until the fault has been properly diagnosed and repaired.

Repair costs depend on which component has failed. Replacing a trivet micro-switch or gas valve switch is generally a lower-cost repair, with parts typically ranging from a modest amount up to several tens of dollars, plus labor. If the control board is at fault, costs will be significantly higher. A diagnostic service call alone can range from $75 to $150 or more depending on your location, and total repair costs including parts and labor typically fall between $100 and $400 for switch-related faults.

Some basic checks are accessible to a knowledgeable DIYer, such as inspecting for physical obstructions around the trivets, checking for obvious wiring damage, and ensuring connectors are secure. However, testing micro-switch continuity and diagnosing gas valve switch issues correctly requires a multimeter and comfort working around gas appliance components. If you are not experienced with gas appliance repair, a qualified technician should perform this diagnosis.

A power reset may temporarily clear the fault display, but the code will return if the underlying switch fault is still present. Because the error requires the conflicting switch condition to persist for more than 6 seconds, the fault will reappear as soon as the cooktop detects the same disagreement between the trivet switch and valve switch again. A reset is not a fix and should only be used as part of the diagnostic process.