RV furnace won’t IGNITE, TURN ON, OR STAY LIT? Repair and Troubleshooting advice! 

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Hey, that was awesome. Thank you for not rambling on and on, a common mistake youtubers do.

Huge thanks, I followed along with your instructions, cleaned my curcuit board and everything works again. I can't thank you enough. Cheers!

Thank you! We tried all kinds of things, but then followed your guide and we figured it out!

This is the greatest video of all time. Been having troubles for months with my dometic 30,000 btu furnace staying lit and messing with it and there it is a dirty sail switch. Thanks for the video this saved us.

Excellent. Stepwise approach from simple to complex, likely to less likely, is perfect.

WE TOTALLY HAD THIS PROBLEM. The quick reference guide is GENIUS. Brilliant brilliant. Absolutely love that you got right to the point with this video. Really well done, you two. (And we wish you had made this in December so that we could have used it when ours was konked out! 😂) 🧡, Keith and Raini

That was the best RV furnace troubleshooting video EVER! Great job and thank you so much!

Great reference video and yay for the awesome handy dandy cheat sheet. Your detective work will for sure help others 👍🏼

I came across your video about trouble shooting the RV heater when mine quit working on a trip. My problem was fixed by removing the sail switch and cleaning it. After I cleaned it, I turned on the switch with the sail switch still wired to the system, but not installed. I held the switch in the activated position, and the furnace worked! I reinstalled the sail switch and now I am enjoying the heat! Great video and very easy to understand. Thanks.. and Yes I subscribed.

Thanks. Not only informative but inspirational. I'm heading out now to give my old furnace another try.

Thank you so much , we are going to check ours out today! Very helpful , short , sweet and to the point. ❤

Great video. I've done much of this before finding thus video. Wished I've seen this before tackling on my iwn. I have the Suburban furnace and have to pull it out from under the oven to access these components. That means disconnecting the propane line as my camper doesn't have a access door outside like yours. Fun! After reconnecting (tip), I re-blead the gas by getting the stove to burn full flames (as my fuel line splits going to the stove & furnace). Mine started intermittent and became worse. I've now replaced the sail & gas switches, the control board, and gasket that allows access to the igniter. Cleaned everything (tip #2 not mentioned here), vacuum all pipes and around the entire unit. Them bugs (Chinese Beatles are the worst) get in during winter storage and cloge up tiny spots. I even had them by the ignitor, re-gaped the ignitor after cleaning, check gas regulator to flow control and ranthe unit inside the RV not installed. Had to reconnect propane line outside the installed location. Watched the ignitor work through the sight glass (not accessible when installed) for a go spark & flame (tip #3), do this in a well ventilated camper and for a shirt time as the exhaust is not properly routed outside. Also checked voltage and signals from the wall mounted controler to the control board (turning on/off and temperture sensor) to make sure that isn't telling the furnace it is to hot inside and don't run. Could have a bad wall unit, but much more rare and not in my case. (Tip #4) If no VOM meter, slide the temp way up to run and once running, slide it way down to stop a heat cycle as a test. Re-installed once repaired and re-beaded the fuel line again. Good to go.

Thank you for this! By far the best video I’ve seen yet on this issue! I’m about to start troubleshooting mine now!

Thanks for such clear description and imagery - truly exceptional and helpful production!

Great video. After watching, I determined i also had water intrusion. Drying out the water solved the problem. I located the source of the intrusion, which was rain water getting past a bad seal in the fridge compartment cover above the furnace. Thanks for your help!

Great job guys hank! Thank you for a quick troubleshooting video. One of the best I've seen! :)

I’m having issues currently while in the middle of our two week trip. Your video was very informative. I checked the sail switch and It did have some stuff obstructing it. I cleaned it replaced it. It worked for a about a day and now having the issue again of course in the middle of the night so tomorrow plan to check the sail switch again.

I have this exact same problem. Thanks for a great instructional video : ) Hopefully I can get mine going.

THANK YOU!!! Rather than calling out a mobile tech from 2+ hours away ($$$$!!) we were able to diagnose our issue on our permanently parked RV and buy a new control board. The fix-it-flow-chart is PERFECT!!

Thank you for making such a reasonable direction based video. I'm hoping the issue we are suddenly dealing with is too low battery voltage vs something more aggressive. I'm also happy to hear you were able to resolve your situation.

good video there you two! I am in the middle of doing the same thing here in MT. My furnace gave out few days ago & currently on 2 small heaters (Which I am not a fan of doing here) too keep some heat in here until I can get out and trouble shoot the issue. I assumed it was the sail switch the board itself - one day intermittent, other days flawlessly, any yet other days I would have to reset it 4 - 5 times on the thermostat to keep it running right. I will be trying this hopefully this week once it gets warmer. You have given a sense of direction as to gettin' this done.... so thanks. Keep them videos comin' Jeff

I'm sure you're going to get a lot of comments over the next few days as this winter weather hits the entire country. I full time in Florida, so I don't need a furnace very often, but it's going down to 30 for the next few nights in Tampa. I went to turn on my heat, and it quit after about 2 minutes of really loud noise. Followed your steps, and I have heat again! Thank you for helping me keep warm over the next few days, much appreciated!

Thank you for this awesome compilation. Great reference, and timely too! Our furnace just crapped out again🤬.

This video helped me out fast! Thank you guys! It was the sail switch for me.

Thanks your video just saved me in the cold Colorado winter . Thank you the regulator was bad

Had trouble with my new unit staying lit. I will keep an eye out for more issues. Thanks for the video

Thank you guys, i was able to fix my furnace thanks to this video! Cheers!!

Wow, it sounds like we have the same luck. I had a intermittent problem and like you, became very handy working on RV furnaces over the last few months because of it. Turns out my control board was bad and had visible charring underneath. After 3-4 weeks of it running flawlessly, it started turning off again, but would fire back up after cycling the thermostat to “off” and then “on”. I have had an unrelated, or so I thought, propane issue lately. Thinking we got a bad regulator! Thanks guys, very helpful video.

Good video, well done and it helped me as my furnace fan starts, heats, reaches set point temp, shuts down and won't restart.

What a great video, I’m currently chasing the RU-vid rabbit hole trying to fix an Atwood that only stays lit for a few seconds at a time. This is the most informative video I’ve found yet, thank you guys!!

yall seem like a nice couple so ill leave a comment, havent tested it yet but just bought a 91 Gulfstream Sun Clipper 27' mobile home, it has a heater, but im just doing research on what to do so when i look at it, i know exactly what to do instead of wasting time, ect, i hope to come back after this weekend with a success story thanks to this video, stay safe and warm this winter!

Great video! I am now going to go tackle my furnace problem!

Thank you! Had us up and running with in 5 minutes of finding this video.

This is awesome by the way. Excellent presentation, to the point. Great job!

Excellent troubleshooting video guys! Thank you for making a great resource

Thank you it went down to 19 tonight and coz of you I now have heat

Straight to the point, good job.

Thank you so much!! You saved us from a cold night in the trailer

Thank you for the detailed process! I will try out these steps and see if I can get my heater working again. Again Thank You!

Thank you for your video. I’m a newbie and this helps a bunch!

Before replacing the board this worked for me it comes off easily with the wing nut it's attached to a plastic vent take the computer board off and clean it with a soft toothbrush both sides do not add any water. It worked for me the dust causes static electricity on the board. Good luck thank you guys you made me pinpoint exactly where my problem was

what great job with this vid, thank you. also liked the little bloopers at the end.

Thank you for your video I helped big time maybe we will survive this winter!!!

Great 👍🏾 Video, I had the same issue. Furnace would not stay lit 🔥

Your information helped me to troubleshoot and fix my problem. Thank you

You guys nailed it with this video. Very well done. I will go through the troubleshooting step by step as soon as we get back home from our vacation. Our Sierra Sprinter (2017) furnace started acting up recently by miss-igniting dozen times when cold but running normal the rest of the day. I hope to find the problem(s) by following your instructions. I’ll let you know if I find something (new) interesting. Thank you both (from Whitecourt, Ab) 😎

Excellent content and I really like your Troubleshooting Flowchart

Great video. I heard the clicking then did the stove test. With all 3 going, there was barely a visible flame. I played with the regulator and it now works. I guess I'm up for a new one. Thanks

Wow..thanks for the tips, fuse needed a little jiggle and furnance came on. 19° here in MO..easy fix for a new full timer

Thank you so much for this video. I haven’t tried it on my 5th wheel but I’m sure going to.

Thank you this was super helpful and very well done!

My camper is 3 months old and doing that just when I need the heat the most! My brother came and did everything we could check. He opened the compartment and it was full of water inside. So guessing the board must have gotten wet! Thanks for the video. Guess I'll have to call a camper technician to come out and check that!

Great way to start diagnosis nice job

Seems like solid advice, thanks! My fan was working but now it won't. Might be the thermostat... previously, the fan would come on, it would click like it was trying to light, but no fire. I checked the stove burners and they work, so i know I'm getting fuel, but the fridge is having issues as well. Might have something wrong with my regulator board. In sure I'll get it sorted this weekend. Thanks again!

Thank you so much! Your video was very helpful 🎉

You guys are awesome! Great job on the video!

Your trouble shooting tips helped me thank you

Great video. Very thorough and easy to follow. We have been going through your videos and find we are similar. We tow with at GMC Sierra 1500 too.

Great Video! Very detailed and helpful! I should be able to get it dialed in now! Love the outtakes! (The struggle is real 😂🤙)

Thank you!! Wonderful breakdown.

Thank you, great help

Great job on the video, thanks!

This video was so well done I just had to subscribe!

You guys are awesome! Thanks so much for the very informative video. 😄👍🏻

Thanks for sharing this.

I appreciate your video and help!

Great video. Thank you for the info!

Great step by step video!!!!

Thanks, this gets me started. Good to the point video.

I'll give it a try. Thank you ♥️♥️

Great overview. Thank you. I figured out that my problem was the sail on the sail switch needed to be slightly bent to put more pressure on the switch itself. I have no idea why this would work for 3 months and then suddenly stop but... 😃

OMG, I just got off work from a night shift starting antiarythmics to keep a man from dying and giving blood to another one who was bleeding. My heater in my camper is not working in the 6 degree weather that Heather decided to curse Arkansas with. I will gladly admit my limitations and call the expert to fix this problem. Staying in my lane thank you😂!

Nice informative video! Mine is blowing but won't light and I've got good pressure. I will check the igniter.

Great info for my future RV

Thanks for the video

Great information thanks very much

TYSM this is so helpful

Thanks for the help. I think mine is fixed now..

Great video. Thanks for taking the time to share.

Think god for RU-vid and you for making the video lol. We were camping and furnace wouldn’t cut on. First check blower motor not running , change fuse and bam good to go. Lol thanks

Good video. Thank you.

Great video! Well done!

Great video

Thanks for sharing my friend stay connected

Thank you very helpful

Great tips great video thanks guys

Very helpful - even if I haven't figured out what is wrong with my unit. Thanks.

Thanks for the video. I’ve never had a problem with my furnace kicking on, until tonight. I’ve got enough bedding to stay warm, but, frustrating! I just spent $50 on propane yesterday, so I troubleshooted the tanks and attachments on the lines. They appear to be in the same old working order. I wondered if it was bad trailer leveling, but I believe I’ve heard that contributes to a water heater malfunction, so I’m ruling that out. I may go find the tool I need to pull the furnace compartment cover and look around in there.

Very informative video

Thank you!

Thank you

Great information

Thank You

Thanks I will try it

This is awesome. My blower starts but won’t lite (light?). Anyway thank you for a great starting point.

Thank you I will be at the RV place tomorrow getting a new board . Seems like mine only happens when its raining.

One thing you didnt mention is replacing the high voltage or ignition cable to the burner. I did this as a last ditch effort after replacing Everything wlse and the cable was the problem. I have spres of everything on hand now including new blower motor!!! Cheers

Thank you ❤

Thanks so much!