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12-02-2018, 04:51 PM
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#1
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Senior Member
Join Date: Oct 2017
Posts: 1,937
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Furnace lights then stops
My furnace was working fine last week. Today I fire it up and it fires then stops. It does that 3 times then totally shuts down.
Any idea why it does that??
It is an Atwood 8531-IV DCLP.
Thank you for your help. 
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Larry & Sheree & KD the CAT
2009 Holiday Rambler Admiral 30SFS Lewis County, Wa.
USN 1964-68, USS LEXINGTON CVS-16
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12-02-2018, 09:35 PM
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#2
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Senior Member
Join Date: Apr 2011
Location: Powell River, B.C.
Posts: 31,486
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It sounds like your flame sense probe isn't reporting back to the control board , and after three tries the control board locks up .
Troubleshooting RV Furnace Problems
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99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.
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12-02-2018, 09:39 PM
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#3
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Senior Member
Join Date: Aug 2001
Location: North America somewhere
Posts: 30,971
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Are on FHU and battery charger working? If not low battery voltage can cause this problem.
Check for blocked/covered registers, check LP tank level, check for an obstruction in the combustion air intake of the side of the RV, check the flame sensor. Do the other LP appliances run OK?
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2000 Winnebago Ultimate Freedom USQ40JD , ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG 11B5MX,Infantry retired;Good Sam Life member,FMCA. " My fellow Americans, ask not what your country can do for you, ask what you can do for your country. John F. Kennedy
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12-03-2018, 05:36 PM
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#4
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Senior Member
Join Date: Oct 2017
Posts: 1,937
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I turned on the stove and it lit off just fine.
So just for drill, I tried to start the furnace, it started and ran for a bit. I shut it off and tried to restart it, No go, nothing at all. I checked my batteries and they are up. I read the trouble shooting link. Guess I will get a little more involved tomorrow by disconnecting connections and reconnecting then go from there.
I'm still open for specific suggestions from here otherwise to the shop she goes. Probably a good idea anyway to have a pro look at it and do the maintenance.
Thanks to your replies thus far. Your " The Best " 
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Larry & Sheree & KD the CAT
2009 Holiday Rambler Admiral 30SFS Lewis County, Wa.
USN 1964-68, USS LEXINGTON CVS-16
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12-03-2018, 05:57 PM
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#5
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Senior Member
Monaco Owners Club National RV Owners Club Workhorse Chassis Owner
Join Date: Dec 2013
Location: St. Charles MO
Posts: 4,920
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I would say what Skip426 said as a basic cause.
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2002 Monaco Windsor 40PST 2019 Equinox 1.5L, Blue OX Aventa LX tow bar, Roadmaster EZ5 baseplate, SMI Stay-In-Play Duo, TireSafeGuard TPMS
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12-03-2018, 06:20 PM
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#6
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Senior Member
Join Date: Jan 2018
Location: Capistrano Beach, California
Posts: 4,465
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You may have a faulty sail switch.
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Larry, Eileen, and Finley
2004 Alpine 36FDDS
Third motor home, first Alpine, no need for another.
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12-08-2018, 05:57 PM
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#7
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Senior Member
Join Date: Oct 2017
Posts: 1,937
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Update. I think I have it fixed, knock on wood. When I had it running the other day, I could make it stop by wiggling wires and then move them again real quick and it would fire. So, I went in there, kind of a pain, and opened things up, disconnected all wires I could, put some dieelectric grease on and reattached all connections I could. Got it all back together, and so far it's running good. I tried wiggling wires again after all that and it continued to run. All is well, until the next , hello, I need fixing, project.
It's a learning experience. Like I said before, it's my new hobby, working on the MH.
Thanks for your replies. Much appreciated.
__________________
Larry & Sheree & KD the CAT
2009 Holiday Rambler Admiral 30SFS Lewis County, Wa.
USN 1964-68, USS LEXINGTON CVS-16
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12-08-2018, 06:24 PM
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#8
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Senior Member
Monaco Owners Club National RV Owners Club Workhorse Chassis Owner
Join Date: Dec 2013
Location: St. Charles MO
Posts: 4,920
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These things will definitely keep you busy but can be satisfying. If you still have an issue be sure the connections are tight too.
__________________
2002 Monaco Windsor 40PST 2019 Equinox 1.5L, Blue OX Aventa LX tow bar, Roadmaster EZ5 baseplate, SMI Stay-In-Play Duo, TireSafeGuard TPMS
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