If your sail switch is doing this during the cycle then you may have .... poor airflow. Get your preventive maintenance done to clear the air flow path.... | By STN Laundry
Sail switch fault - Fixya
Ask Dave: Furnace issues: I've replaced the sail switch but now it runs intermittently – Why? - RV Travel
Sail Switch for RV Camper Replacement Hydro Flame Model ATWOOD/Dometic 36680 | eBay