Microwave displays F5 and may shut down during operation.

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

Stuck relay on control board, Overheated relay contacts, Faulty power control circuit, Voltage spike damage

How to Fix / Troubleshooting

Safety Warning: Unplug the microwave before removing the control board. High-voltage components are nearby.

Steps:

1. Reset: Unplug for 10 minutes, then plug back in and test. If F5 returns quickly, the control board is likely at fault.
2. Avoid heavy loads: Do not run the microwave empty or with metal containers, as this can stress the power circuitry.

F5 usually requires replacement of the main control/relay board. This repair involves moving multiple connectors and should be done by an experienced DIYer or technician.

Repair Difficulty

Professional Required 5/5

Required Part

Main Control Board

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