I have an 8535-IV DCLP. When thermostat cycles it onn the fan is not starting. There's a buzz/clicking sound and then everything quits with a Fault Code indicatin "limit switch or airflow problems". Checked the sail switch with the VoM & it's good. Haven't tested the limit switch yet, but from your videos, I'm gathering that if the fan isn't running, it hasn't proceeded to the point where the limit switch would yet be a factor. Is that correct? What else should I be checking?

A rodent has chewed my igniter wire off. Do you suggest a source for a replacement ? I don't want to buy something cheap off of Amazon finding out that I have to do this all over again. 26:14

Thanks for the video. I have been working through diagnosis. This video has proven pretty helpful, but I am still stuck with a furnace that won't turn on. It was working fine, and then the next day, just wouldn't get going at all-no attempt to fire up, bow, click. Nothing. Seem to have power at the thermostat and tested the switch, after resetting it and it won't go. I am getting a new sail switch, but the one that's in there, seem to be flapped open and away from the tripping device, so I don't know if that is my problem? I am also getting no light on the circuit board. Any insight on how to proceed or potential confounding aspects would be appreciated.

How do you disassemble the model with the gas pipe coming over the top of the heat exchanger end of the furnace? Just swing it around to unscrew it?

Shanon Heights

I live alone in my unit year round, in northern alberta, therefore I have learned alot about maintenance of unit. The furnace however made me uncomfortable ... until I found your videos. I had to thank you for being so helpful in your explanations and video shots, even if a little shaky, 😊. I am confident in some of the repairs and also knowing my limitations. With thanks, keep up the good work.

Baumbach Walk

do you have a part number for the sail switch?

Sophia Locks

Georgianna Island

This is actually the best video on Atwood furnaces on youtube. You basically told me that if the gas is turning on but I do not hear the igniter working, then it is a problem with the igniter itself. So I assume that an igniter can actually go bad.

Very good video for this furnace. I used a crowfoot for the gas regulator fitting. Problem is, the threaded opening for reinstalling the fitting somehow got damaged, so the fitting will not go back on. Such soft metal.

How to wire it to test?

My Atwood 8940 III DCLP starts, ignites, lights and runs for a few seconds then repeats until lockout. I've checked, limit switch, sail switch and igniter, all check good. I could really use some insight of what to check next. Only light flashes I get are when it locks out.

You familiar with the hydro flame 8900-II series? Mine runs with !20 volt AC and 24 volt thermostat. What thermostat would you recommend?

Literally the only video I can find to pull the sail switch on this model. I’m cleaning mine. Thanks man

Thanks for the instruction man. I’ve determined I’ve probably got a bad or dirty sail switch, same model as this, Atwood 8531-IV. What’s the easiest way to get that out wo pulling the whole unit?

1/2 inch holes?

Thank you very much for taking the time to share.

alot of videos, but nothing on the results?

I realize every job is different, but on the average using the 6x6 grid, how much area can you cover with one sell unit (resin+hardener)

I've seen where you mentioned this would likely work on wood/Styrofoam combo. I've been looking from underneath contemplating adding supports when I found your video. Question is, I do see the floor move (push down) when someone walks on a problem spot. Is that what this is helping with in general or should I keep looking at adding supports here? Thanks for the video btw!

Thanks for video really helpful. Couple question you can help with, can you drill 3/8 hole or is 1/2 better. How deep is the hole, just threw the top plywood not too deep into foam?

Thank you this helped a lot I figured out my limit switch was bad 👍🏻👍🏻

Thank you for this video this was the only video that I found that explained step by step what I needed to repair my floor .

Thanks for your demo. Just what I needed.

Thanks for your demo. Just what I needed.

Thanks for your demo. Just what I needed.

Very good video. Thanks for sharing your knowledge.

How do you test the flame sensor/ igniter? I have tested sail switch and limit and both check out good. Blower motor just runs and it does not even try to click/ igniter. Thanks

Need some help here so I did check the sail switch and limit switch with multimeter like in first video and both are working. I turn on the heater and it just blows cold air no heat not sure if it’s not igniting I do here a click a little after the blower comes on and the click comes back again few times but no heat at all. Could it be the ignitor itself or gas line or could it even be the Thermostat that’s not working properly. The heater was working on the unit prior and was working fine all of a sudden just stopped working and only blew cool air Anyone who can help me out point me to direction go now since I know both switches are working

Need some help here so I did check the sail switch and limit switch with multimeter like in first video and both are working. I turn on the heater and it just blows cold air no heat not sure if it’s not igniting I do here a click a little after the blower comes on and the click comes back again few times but no heat at all. Could it be the ignitor itself or gas line or could it even be the Thermostat that’s not working properly. The heater was working on the unit prior and was working fine all of a sudden just stopped working and only blew cool air Anyone who can help me out point me to direction go now since I know both switches are working

My buddy's rv the exhaust stinks and has soot coming out

Exactly the video I needed thx dude!

your very knowledgeable...but your music is too fucking loud mate... and keep the mic closer to you...

Where do the 2 wires in the new black loom coming fromt the stator go? I think a1 and b1?

SOUND IS SO LOW!!!!!!!!!!!!

Well, after turning it on, mine would work OK until we went to bed. THEN, I would get up to pee and it would be like 30 in the Rv. The thermostat would be set just fine. I troubleshooted the silly POS but when I was pricing a part I found I could buy an entire brand new CORE furnas (that which slides into the metal sleeve) for $398. its on its way. Some things just aren't worth the hassle. !

The best tutorial I have watched. Thanks you very much for your uploads.

Nice looking at your shoes.

Very helpful!! Thank you so very much.

I couldn't hear shit. I'm more confused now.

Can you tell me how to disconnect the gas from the valve where it passes through the top of the furnace sheet metal and connects directly to the valve on the underside of the metal?

I have the atwood with the attached gas line. How do you get that out?

In the third how to video is a different set up from what I can tell. I am trying to get the gas line fitting separated from the gas valve assembly and I’m unsure how to do so as it’s STUCK. Any help with this would be greatly appreciated.

My RV heater SF-30FQ will not stop heating or shut off unless I pull fuse out. What is the problem???

Just finished repairing 8535-IV atwood after watching you video. The part I was missing was where does the blue wire from the reset switch go and what was the other blue wire doing. There was nothing turning on except the temperature at the thermostat. Turned out to be a loose wire there.

Hey great video Question hey so when i get a 3 flash /lock out what do i do

3:09 Wouldn't that mean its a normally open switch being that the leads sent a signal through?

Sure would be easier to follow if the camera wasn’t sideways.