Lower zone cools but upper zone is warm (on dual-zone models)

Safety first: Unplug the unit before internal access.

Steps:

• Airflow check: Feel for airflow at upper vents when the compressor is running. Lack of airflow points to a fan or blockage.
• Inspect upper evaporator: Remove upper shelves and inner rear panel to check for ice buildup or a stalled fan.
• Sensor verification: Confirm the upper sensor is intact and properly connected.

Repair: Replace the upper evaporator fan motor or sensor as needed. If the upper evaporator does not frost while the lower does, a sealed system fault in the upper circuit is likely and should be addressed by a technician.