Upon arrival pulled last 10 system events stat showing limit fault and g input being sent together. Fault happened twice yesterday, furnace running properly satisfied at stat with no active codes. Found customer had most supply resisters in first floor closed/ blocked off. Advised to open registers for maximum airflow. Customer using 16254 filter in place of 413. Advised 4 inch filter will restrict airflow 1”+ around perimeter of filter. Best to use 413 filter for max airflow. Found 4 dampers closed. Opened all dampers. Furnace is running upon departure with no issues.