F3
Kenmore Power Supply / Voltage Error at Control Board

Kenmore freezer shows F3; unit may shut down or run erratically; sometimes accompanied by clicking from control area.

Advertisements

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.

Advertisements

Possible Causes

Unstable household voltage, Loose power cord connection, Failing internal power supply on main board, Burned fuse or varistor on control board

How to Fix / Troubleshooting

Safety first: Unplug the freezer before inspecting electrical components. If you suspect wiring issues in the home, contact an electrician.

Steps to address F3:

  • 1. Check outlet: Plug a lamp or small appliance into the same outlet to confirm stable power. Avoid using extension cords or power strips.
  • 2. Inspect power cord: Check the Kenmore freezer's power cord for cuts, burns, or kinks. Ensure the plug fits snugly in the outlet.
  • 3. Access control board: Remove the control housing or rear panel to expose the main board.
  • 4. Visual inspection: Look for burnt components, cracked solder joints, or a blown onboard fuse. Do not bypass any fuses.
  • 5. Reseat connectors: Ensure all harnesses to the board are fully seated.
  • 6. Replace board if damaged: If there is clear board damage or F3 persists after verifying power, replace the main control board with a Kenmore-compatible part.

Warning: Do not attempt to repair the control board at component level unless you are qualified; improper repair can create a fire or shock hazard.

Advertisements

Repair Difficulty

Hard 4/5

Required Part

Main Control Board
Check Price on Amazon

We may earn a commission from links on this page.

Advertisements