Check Evaporator Air Flow

The system has detected a significant restriction in airflow through the evaporator.

Possible causes

Evaporator coil clogged by dirt or ice
Failed evaporator fan motors
Fallen or blocked internal air ducts
Fan belts (if applicable) slipping or broken

Recommended actions

Perform a full manual defrost
Inspect evaporator coil cleanliness
Verify fan motor rotation
Ensure cargo does not block return air

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