Once the furnace fuse blows, the fan on the furnace will cease to work. According to the Trails.com, it's important to examine the circuit breaker to see whether or not it is working properly. Then if you see that a blown fuse is truly the problem, replace the fuse. The site recommends that you always carry extra fuses with you in case of a fuse outage.
As Trails.com points out, if your fan is running but still your furnace is not producing any heat, the problem could be your propane tank, possibly your regulator, so a thorough examination may be in order.
In addition, according to MotleyRVRepair.com, the colder it is outside and the less propane you have, the colder it will feel inside your RV because a lack or shortage of propane can cause your furnace to not run efficiently.
If you've not cleaned your furnace in awhile, expect functional problems. Build up on the inside vents can cause the failure of your heating unit to work, according to Trails. Thus regular cleanings are a must.
Maintaining the correct voltage is also essential. MotleyRVRepair advises, keeping your voltage above 10.5. According to the RVTravel.com, you can check the voltage by observing the red and yellow wires, with the furnace in the "on" position. MotleyRVRepair recommends a value between 12.6 and 13.2 for your voltage. To play it safe, the site recommends concern when the voltage falls at 11 or less.
Keep your vents clear of camping gear, or anything else that might keep heat from emanating from the furnace. Place all gear in a safe spot away from all heating vents to obtain maximum heating, Trails says.
