Display shows F6; interior fan may not run, or airflow seems weak; uneven temperatures in compartments.

Safety: Disconnect power before accessing fan assemblies. Fan blades can start unexpectedly if power is applied.

Steps:

• Listen for the fan: After manually closing the door switch (with the door open) and restoring power, you should hear the evaporator fan running when the compressor is on. No sound suggests a fan issue.
• Check for ice blockage: Remove the interior rear panel to access the evaporator and fan. If the fan is encased in ice, defrost the area completely and check the defrost system.
• Spin test: With the power off, spin the fan blade by hand. It should rotate freely without grinding. Stiff or noisy movement indicates a bad motor or bearing.
• Voltage test (advanced): With extreme caution and power on, measure the voltage at the fan connector. If the correct voltage is present but the fan does not run, replace the fan motor.

If no voltage is present at the fan during a cooling cycle, the main control board or wiring may be faulty and should be checked by a professional.