Fisher & Paykel Cooktop Error Code F12.5

F12.5 means the cooktop's internal Switched Mode Power Supply (SMPS) has not shut down within 10 seconds of receiving a turn-off command. The cooktop monitors this shutdown sequence, and when the power supply remains active past that threshold, it logs F12.5 and halts operation. This is a power supply regulation fault centered on the main PCB power supply board. It requires diagnosis of the power supply circuitry rather than a surface-level fix.

No, the cooktop should not be used while F12.5 is active. This error indicates the power supply is not responding correctly to shutdown commands, which represents an abnormal electrical condition. Continued use could risk further damage to the control electronics or create a safety hazard. The cooktop should remain unplugged or isolated at the circuit breaker until the fault is diagnosed and repaired.

Repair costs depend on what component has failed and local labor rates. If the issue is a wiring or connector fault, costs may be relatively low, typically in the range of a standard service call fee. If the main PCB power supply board requires replacement, parts and labor combined can range from a few hundred dollars up to several hundred depending on the specific model and part availability. Getting a diagnostic assessment before committing to a repair is advisable.

Diagnosing F12.5 requires testing the main PCB power supply board, which involves working near mains voltage components. Technicians with experience in electronics diagnosis can inspect for failed capacitors, shorted transistors, or connector faults. However, most homeowners should have a qualified appliance technician handle this repair due to the electrical hazards involved. If a full board replacement is needed, the swap itself is more straightforward once the correct part is confirmed.

A power reset by switching off the cooktop at the circuit breaker and restoring power may temporarily clear the F12.5 code, but it will not resolve the underlying fault. If the power supply board or associated components have failed, the error will return. A reset alone is not a reliable fix and should only be used as part of an initial diagnostic step to assess whether the fault is intermittent or persistent.