Cooktop line frequency or power quality error.

Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Unstable power supply, Generator or inverter-based power source, Incorrect mains frequency, Defective power supply circuit on PCB

How to Fix / Troubleshooting

Safety first: Turn OFF the range and disconnect from any non-standard power source.

Power source check:

Ensure the range is connected to a stable utility power source, not a small generator or inverter that may have poor frequency regulation.
Have an electrician verify line frequency and voltage.

If power is stable: The internal power supply circuit may be misreading line conditions. A technician should evaluate and likely replace the main PCB.

Repair Difficulty

Hard 4/5

Required Part

Main PCB (Oven Control Board)

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