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Old 12-22-2018, 04:34 PM   #21
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Originally Posted by Wilco View Post
If the burner is not attempting to light, it might be the Sail Switch on the blower. This switch is a little flapper in the air stream the tells the furnace that the blower is running. This switch also give a permissive to light the burner. If this switch does not close, the burner will not light and the furnace will shutdown after a ~30 sec purge.

If the furnace has not run recently, it may take several tries to loosen up the sail switch to allow it to run.
XX2 my first thought.
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Old 12-22-2018, 04:46 PM   #22
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Stuck sail switch? Mine occasionally does that (goes on the 30 seconds then stops). Try banging in the top and see if it starts up. Mine usually resets after traveling a bit (bouncing around), then stops after 2 or 3 cycles, sometimes works fine for a few days and then all of a sudden acts up. Never acts up when I take it in, so for now I just bang on it
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Old 12-22-2018, 05:42 PM   #23
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Also try the over temp switch. Mine failed in the open position a few years ago. I now carry a spare
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Old 12-22-2018, 05:54 PM   #24
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Quick answers. Shore power - at home. Tried battery, no joy. Electric is gonna be the way we start, may need to get a "something" or hit a Camping World along the way.
Camping World would not be a good choice, they'll have you buying a whole new furnace. A Mobile RV Tech may be your best bet.
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Old 12-22-2018, 09:14 PM   #25
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RE: Help, Urgent, Furnace no heat

Update,

I have pulled the heater and checked all the wires, all, tight as far as I can tellI have not stood outside and listened for ignition. But other than that, from all the very helpful answers, I am thinking sail switch. Propane is fine.

Couple of notes
1) its a 2013 FR Solera 24MS. Sprinter based chassis. 28,000 miles since Jan 2013, 1 propane tank.
2) board replaced by local shop, it was on his shelf, invoice says 3G board. It worked when I got it home. I stood outside the exhaust when I replaced the exhaust screen.
3) I had a 100% full tank as I filled it on the way home from the shop. Tank is now at 1/2 and the only thing that was running was the furnace. Fridge off, water heater in winterize status. So it definitely was working. Brought it home Dec 5.

We are leaving on the 26th anyway, we were gonna walmart our way to Savannah, then on the Everglades, but now we are gonna stop at a campground near Richmond, VA.

Anyone know a reliable mobile shop in
1) Savannah GA
2) Titusville FL,
3) Flamingo Campground Everglades
4) Ft Myers FL

We'll be in the everglades for 2 weeks,

PS I am hoping lmiken is right and driving loosens the sail switch.

Thanks to all for the ideas and support.

Merry Christmas and Happy New Year to all
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Old 12-22-2018, 09:22 PM   #26
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It may not be the cheapest, but when you get to a cg where you plan on being at for a few days, check at the office for a mobile RV service co. They tend to cater to snow birds and travel with a pretty complete inventory of parts.
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Old 12-22-2018, 09:36 PM   #27
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Originally Posted by SimchaSabre View Post
Also try the over temp switch. Mine failed in the open position a few years ago. I now carry a spare
X2
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Old 12-23-2018, 04:12 AM   #28
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Could be the board, could be low voltage, could be fan limit switch, could be sail switch. Needs to be seen by technician that has knowledge of the unit.
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Old 12-23-2018, 08:15 AM   #29
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Long shot here.
I had a problem where it would try to start but wouldn't actually ignite.
I had a dirt dauber nest in the thing on the side with two holes. I took the cover off, broke the nest with a screwdriver and I was back in business!
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Old 12-23-2018, 08:19 AM   #30
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Long shot here.
I had a problem where it would try to start but wouldn't actually ignite.
I had a dirt dauber nest in the thing on the side with two holes. I took the cover off, broke the nest with a screwdriver and I was back in business!
Due to a recommendation from when we first got the rig, it has had a screen over the exhaust since new. Also when I pulled the furnace, I could see out the exhaust ports. No sign of infestations.

Thanks
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