Why is the heat not working in my trailer?
Why is the heat not working in my trailer? If the furnace runs, but you aren't getting any heat, check to see if the propane is turned on. If the pilot won't light, check to be sure you have propane. One other RV heater troubleshooting tip is: check the thermocouple. Be sure it is clear of any spider webs or insect nests. Why won't my furnace warm up? Furnace filters Dirty filters are the most common cause of furnace problems. Dust and dirt restrict airflow—and if the filter gets too clogged, the heat exchanger will overheat and shut off too...