eddylives 99 Report post Posted November 8, 2010 I have an 84 Citation travel trailer with a furnace issue. The furnace will fire up and run properly when running off of the house power , ie. batterys alone. But when hooked up to shore power ie plugged into the house or a generator the furnace will run the blower but will not fire to produce heat. Would any of our members have an idea of what the problem might be?? I have inquired at a few of the dealers around town but they all want to see the trailer.......$$$$$$.......so I prefer not to do that if possible lol. Thanks for any ideas. Quote Have no fear of perfection.....you will never reach it Share this post Link to post Share on other sites
Some Old Guy 968 Report post Posted November 8, 2010 Is this a propane/electric furnace or is it just propane? Roger Quote R.T.R. Respect the resource! Share this post Link to post Share on other sites
eddylives 99 Report post Posted November 8, 2010 He he..... I guess I should have said "propane furnace" only lol. Quote Have no fear of perfection.....you will never reach it Share this post Link to post Share on other sites
Bear 77 Report post Posted November 8, 2010 Have you checked any fuses for the unit? Sounds like the unit runs off 12 or 24 volt and maybe a fuse is gone or your 115v to 12 or 24 volt transformer is not making power to ignite the burner. Bear Quote Share this post Link to post Share on other sites
Some Old Guy 968 Report post Posted November 8, 2010 YEs. As Bear said it could just be a fuse issue. Roger Quote R.T.R. Respect the resource! Share this post Link to post Share on other sites
eddylives 99 Report post Posted November 8, 2010 I checked every fuse in the trailer and they all tested good so......? I have not been able to find a wireing schematic yet so I am just guessing that this furnace is 12V only but I could be wrong?? Thanks Quote Have no fear of perfection.....you will never reach it Share this post Link to post Share on other sites
Some Old Guy 968 Report post Posted November 8, 2010 Usually it is a 12 volt. If I remember right look at the back of your furnace from outside. I had a switch (dial) on mine that read Propane/12v/110 Do you have that? Roger Quote R.T.R. Respect the resource! Share this post Link to post Share on other sites
uncle 19 Report post Posted November 8, 2010 Usually it is a 12 volt. If I remember right look at the back of your furnace from outside. I had a switch (dial) on mine that read Propane/12v/110 Do you have that? Roger I think that dial is on a fridge Roger. For a quick fix put a battery charger on your batteries and run it on 12 volt. Quote Share this post Link to post Share on other sites
eddylives 99 Report post Posted November 8, 2010 The only access to the furnace is inside the trailer and there is not much to look at there when you pull the front panel off of the furnace , its pretty basic without circuit boards and such like the newer ones. And yup , we rode out the week long hunting trip by doing the battery charger trick to stay warm , thank god I figured out that trick or it would have been a cool week. So it is a basic furnace with just a sail switch as far as I know. Quote Have no fear of perfection.....you will never reach it Share this post Link to post Share on other sites
Kayaker 38 Report post Posted November 8, 2010 What make is the furnace Quote Share this post Link to post Share on other sites
Some Old Guy 968 Report post Posted November 9, 2010 Ahhh yes Uncle, That's what it was. I'll go back to my room now.......... Ha Ha Roger Quote R.T.R. Respect the resource! Share this post Link to post Share on other sites
naden 136 Report post Posted November 9, 2010 My friend installed a vent free propane heater in his camper, MUCH better than a furnace. It is controlled by a thermostat but runs only on propane no power required. Keeps the trailer very toasty and you dont have to listen to the fan kicking on and off all night. No more running the generator all night or freezing after the furnace kills your battery. Those old trailer furnaces can be hard to find parts for. This is a link to something similar http://www.nbmc.com/vanguardbf/ I think his was less than 200 bucks. Quote Share this post Link to post Share on other sites
arvey 154 Report post Posted November 10, 2010 if you don't have your furnace fixed or the problem figured out. here's a sugestion. i take it that the furnace is a forced air like in my camper. disconect the battery and plug into house power then try your lights if they don't come on then it's like bear said your convertor gone. that's why it will work on battery and not on shore power.on battery the power doesn't need to be knocked down to 12 volt but on shore power it does so all your 12 volt stuff will work. so when plugged in and the 12 volt lights don't come on then you know what's wrong. just a thought good luck arvey Quote Share this post Link to post Share on other sites