Display shows F9 and the refrigerator may show erratic operation after power interruptions.

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 mains voltage, Faulty internal power supply on PCB, Loose power cord connection, Surge damage to control board

How to Fix / Troubleshooting

Safety first: Ensure the outlet is properly grounded and not overloaded.

Steps:

Plug the refrigerator into a known-good outlet (avoid extension cords or power strips).
Use a plug-in voltage tester to confirm correct voltage at the outlet.
Perform a hard reset by unplugging for 10 minutes and reconnecting.

Corrective action: If F9 persists on a stable supply, the internal power supply on the main control board is likely faulty and the board should be replaced by a qualified technician.

Repair Difficulty

Hard 4/5

Required Part

Main Control Board (Power Supply Section)

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