CF
Luma
Circulation Fan Failure
Display shows CF and the interior fan does not run; temperature is stratified (warmer at top or bottom).
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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.
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Possible Causes
Failed circulation fan motor, Obstruction in fan blades, Loose fan connector, Faulty fan driver on control board
How to Fix / Troubleshooting
Unplug the cooler before accessing the fan.
- Locate the circulation fan: Depending on the Luma model, the fan may be behind the rear interior panel or in a duct between dual zones.
- Inspect for blockage: Remove any debris or ice around the fan. If iced, fully defrost the unit and check for door seal or defrost issues.
- Check motor: Try spinning the blades by hand. If stiff or noisy, replace the Luma circulation fan motor.
- Verify wiring: Confirm the fan harness is fully seated on the control board and not damaged.
After replacement, reassemble and power on. You should feel airflow inside the cabinet when cooling is active and CF should clear.
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Repair Difficulty
Medium
3/5
Required Part
Circulation Fan Motor
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