Heat gas

[Gonefishing]

Having problem with gas heat. Turn it on fan runs for 30 seconds then stopes. Reset it same thing. Replaced sail switch same thing. I can remove sail switch from the motor hold sail against switch and it will run like it should. I’m thinking the motor isn’t blowing enough to hold sail against the switch. Any other suggestions?

[Kyle and Lisa]

Originally Posted by Gonefishing

Having problem with gas heat. Turn it on fan runs for 30 seconds then stopes. Reset it same thing. Replaced sail switch same thing. I can remove sail switch from the motor hold sail against switch and it will run like it should. I’m thinking the motor isn’t blowing enough to hold sail against the switch. Any other suggestions?

Check your exhaust manifold for dirt dobber nest restricting airflow.

[DutchmenSport]

It defiantly sounds like it's the sail switch problem. Not necessarily the actual sail switch, but the pressure the furnace is blowing the air to activate the switch. You should check around the furnace itself, specially where the blower fan is, and use a small paint brush and vacuum and suck out all the dust around the motor and the fan, belts, anything that moves. Then maybe a drop or two of oil where things move and touch each other. It does not take much dust to slow the fan down, as you stated.

[Daryles]

Try swapping the black 15A self resetting fuse with a regular blue 15A fuse.
It's a quick and easy test.

[Gonefishing]

Originally Posted by Daryles

Try swapping the black 15A self resetting fuse with a regular blue 15A fuse.
It's a quick and easy test.

Tried that dint help

[Gonefishing]

Originally Posted by Kyle and Lisa

Check your exhaust manifold for dirt dobber nest restricting airflow.

Checked all that. I keep thinking it’s the motor not blowing enough. My reason for that is if I remove the switch from the motor and hold it the sail lays against the switch and it will run just fine

[Kyle and Lisa]

Originally Posted by Gonefishing

Checked all that. I keep thinking it’s the motor not blowing enough. My reason for that is if I remove the switch from the motor and hold it the sail lays against the switch and it will run just fine

And it lites as well and keeps running?

[Gonefishing]

Originally Posted by Kyle and Lisa

And it lites as well and keeps running?

Yep lights n runs

[PA_Alpine_Owner]

Check for duct that came off back or side of furnace, may have fallen off and not creating enough pressure for the blower fan.

[raygreg]

I did a little bending of my sail switch a while ago as it was hitting on the housing not letting the switch fully activate
Sorry I don't remember exactly what I did as it was quite a while ago. Furnace has been working fine since then>

[Richard Blackwell]

Originally Posted by Gonefishing

Having problem with gas heat. Turn it on fan runs for 30 seconds then stopes. Reset it same thing. Replaced sail switch same thing. I can remove sail switch from the motor hold sail against switch and it will run like it should. I’m thinking the motor isn’t blowing enough to hold sail against the switch. Any other suggestions?

Had the same problem on our 2013 3402RL last year. Turned out to be a defective thermostat controller for the rig. Thermostat replaced and no more problem.

[Gonefishing]

Originally Posted by Richard Blackwell

Had the same problem on our 2013 3402RL last year. Turned out to be a defective thermostat controller for the rig. Thermostat replaced and no more problem.

Dont think it’s the thermostat. If I remove the sail switch from the motor and let it lay in my head with the sail against the switch everything works as it should. That’s what making me think it’s the motor not spinning fast enough to push it against the switch

[Kyle and Lisa]

Originally Posted by Gonefishing

Yep lights n runs

Continuously? Or for how long?

[jsb5717]

Sounds like you've currently got a working solution. Sounds like, bottom line, the sail switch is weak. Personally, I'd have a new one ready to go for next time it fails. Did you make sure that the switch was clean? A little lint can cause intermittent issues. Pressing harder on the sail can maybe overcome that but make sure it's blown out.

[Daryles]

Any chance the new sail switch could be bad?

New sail switch kit part number 33082 which replaces old part number 33063.

https://www.amazon.com/33082-sail-Sw...95095564&psc=1

Did you get it from Dometic or Amazon?
I've read of Amazon selling knock offs (unbeknownst to them).

[Gonefishing]

Originally Posted by Daryles

Any chance the new sail switch could be bad?

New sail switch kit part number 33082 which replaces old part number 33063.

https://www.amazon.com/33082-sail-Sw...95095564&psc=1

Did you get it from Dometic or Amazon?
I've read of Amazon selling knock offs (unbeknownst to them).

I got it off Amazon part number 33082. It could be bad even being new. What I don’t understand is if I remove it from the motor let it lay in my hand the sail will rest against the switch it will light and run like it should. Reason I’m thinking it the motor not blowing enough

[jsb5717]

I don't think that all sail switches are created equal. I've also had to bend a sail a bit to get it to work correctly. So far it hasn't failed. If it's working then let it work.

Personally, I like having backup parts for the furnace. They can be finicky and I hate being out in the cold when a part fails. They are usually pretty easy to fix if the parts are handy.

[ChuckS]

You simply cannot clean a sail switch unless you take the case rivet out so that you can get to the TWO CONTACT points inside the switch..

Over a period of time those two contact surfaces get oxidized and burnt and even though the paddle arm moves the internal spring loaded contact points to touch .. the surface of the contacts is oxidized or pitted and cant complete the circuit and KEEP the circuit active due to oxidation...

watch my video... i demonstrate and take apart a typical sail switch so you can see what I am talking about..

** many folks will spray contact cleaners and such on the outside of the switch and all this does is dribble the crap further down inside the switch making the issue worse and worse

Image of sail switch taken apart showing the contact points and moveable parts that will gum up and not allow solid electrical contact across the points.

Video i out together a while back.. a bit long winded but trued to explain and demo everything about the sail switch.

https://youtu.be/Neg5E0WemgY?si=0YgJ43-mJukAeIJ1

[LeftOverParts]

You might check your new switch. Depending on which one you bought, some of the 1 star reviews of 33082 switches on Amazon mention weak or stiff springs that keep the fan from activating. Weak meaning the sail doesn’t open consistently, stiff meaning it takes too much air pressure to depress. You mentioned you could hold it against the motor to make it work so maybe a little stiff?

Also if you haven’t tried it, as mentioned already, the sail might be rubbing inside and keeping it open, so checking where it could rub and bending it a little might help it to work.

Good luck!

[EagleRunner]

You might try switching over to the other propane tank. It is possible the source tank is not providing sufficient pressure for full flame causing furnace to shut down. Good luck