Heater Not working

[thatoneguy]

Had a burned wire on mine, luckily it didn't take the board with it but I had to completly remove the furnace on my 32rli and bring it in as I suspected sail switch.. just 1 bad wire.

[ajchadon84]

Originally Posted by Daisylady

This is exactly what is happening to ours. It will turn on and then blow cold for about 3 minutes and turn off. I thought we were out of propane but that’s not the case. The hot water heater works. The gas range works- I’ve never lit the oven. Is it the furnace itself? Ours it set up permanently and I can’t take it in for service.

I’m having the same issue and ours is permanent as well. It’s so frustrating!

[ajchadon84]

Originally Posted by Big 417

It's failing to light. Various causes. Make sure there's no critters blocking the exhaust. Could be a faulty sail switch, and or the main board. Some will last a week, some will last 10 years. Boards aren't super expensive, and easy to replace. We generally carry a spare, one day we'll need it, or perhaps we'll help a fellow camper. As they are a pretty common fit part

Are you talking about the fuse board itself?? Sorry I’m incredibly new to the world of rv life.

[jsb5717]

Originally Posted by ajchadon84

I’m having the same issue and ours is permanent as well. It’s so frustrating!

If the fan turns on but the furnace makes no attempt to ignite (you can't hear any clicking sound of the igniter sparking) then the issue is pre-ignition. Most common issue is the sail switch. They can go bad but usually they are just dirty. The fan can blow lint into them preventing them from making contact. If you have good access they are easy to check and clean.

If the sail switch is OK then it's possible it's the main control board. A little spendier but fairly easy to swap out.

How old is your trailer? It's also possible that just jiggling the various wire connections on the main board can solve it as well. Those contacts can sometimes need a little help from time to time. I've had this solve the issue on 3 different furnaces.

[TurtleB52]

We had this problem last week when we arrived at our site at 9:30pm and 28°. After 3hrs of troubleshooting we finally got it going by totally shutting off and unplugging all power including solar. Waited for a minute then put all back together and shazam... back in business.

[kguess]

I had a similar problem recently. Find the reset switch and turn it off, this shuts off the gas. Wait several minutes and turn it back on, move the thermostat up. Hopefully it will be working. Also if propane is low, it won’t work. Good luck.