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12-08-2013, 09:59 AM
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#1
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Senior Member
Join Date: Nov 2013
Location: Joliet, Illinois
Posts: 117
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Motorhome furnace
Bought a 1998 discovery in July. I tested the furnace in september, ok at the time. I tried it now, Dec.8,2013 now it is not working. any have any ideas? ( The propane tank is showing between 1/2 and 3/4.) thanks
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12-08-2013, 10:11 AM
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#2
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Senior Member
Thor Owners Club Freightliner Owners Club
Join Date: Apr 2011
Location: Port Charlotte, FL
Posts: 728
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Really need more info, what brand etc. Then go to their web site if you don't have a manual and check for trouble shooting guide. simple things can foul up the furnace. Do you have electricity (12 volts) to unit. is the igniter trying to fire the furnace? Go out side and have wife turn it on inside. Stand by the furnance with the door open. listen for igniter, check for bugs or mud daubers. Is gas port fouled or plugged with ants or other critters. safe travels... ed
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12-08-2013, 10:12 AM
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#3
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Senior Member
Country Coach Owners Club
Join Date: Jan 2006
Location: Northern California
Posts: 5,868
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Identify the brand of furnace that you have. Go online to either Atwood or Suburban web sites and get product manual. It will have trouble shooting steps.
Do a web search also as there are furnace trouble shooting resolutions out there.
Not working? Fan will not start, heat will not start, shuts off too soon, noisy?
If not spinning at all, check your house battery charge.
__________________
Dean
1995 38' CC Magna #5280 **** Sold after 21 years of enjoyment.
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12-09-2013, 04:58 AM
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#4
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Member
Join Date: Dec 2013
Posts: 41
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does the furnance start and then not provide heat? the propane regulator may be frozen closed...had similar problem and warming and tapping regulator fixed
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12-09-2013, 07:27 AM
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#5
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Senior Member
Vintage RV Owners Club Fleetwood Owners Club
Join Date: Mar 2013
Location: c above
Posts: 5,525
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I'll tell ya what, I started the MH yesterday -5 to zero, started rough. Turned on furnace and it took maybe 5 minutes before warm air started to come out supply's. If it is this cold where you are give it time to warm up everything is cold. Good luck hope it fires.
Tim
__________________
1982 Pace Arrow P30 454
KarKaddy SS, Toad: 2009 Genesis
Tim, Joe and Lilly too. Mpls Minn.
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12-09-2013, 08:05 PM
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#6
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Senior Member
Join Date: Aug 2001
Location: North America somewhere
Posts: 30,982
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By not working, exactly what happens(doesn't happen)? You turned on the thermostat, set temperature above ambient, then what? Are coach batteries fully-charged? LP valves open? Did you turn on/light cooktop to insure gas flow? Did you use a bright light to look at the burner tube for insect nests or mouse nest? Does the blower run? Spiders love the odorant in LP, and will build a nest inside the burner, clogging the orfice. That requires removing the burner tube and cleaning thoroughly with a small soft-bristle brush and compressed air.
__________________
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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12-10-2013, 01:52 AM
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#7
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Senior Member
Join Date: Jun 2011
Location: Phx, Arid~zona
Posts: 11,106
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My 5er did that once. Cycled it a few time and it never failed again.
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12-10-2013, 06:31 AM
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#8
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Moderator Emeritus
Nor'easters Club Workhorse Chassis Owner iRV2 No Limits Club
Join Date: Oct 2004
Posts: 30,785
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This link will have furnace information you will need your gas line may have air in it may need to turn on stove to get some of air out than a few try's of igniter should get rid of the rest.
Make sure you have valve on tank opened.
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12-10-2013, 06:59 AM
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#9
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Senior Member
Fleetwood Owners Club
Join Date: Jun 2009
Posts: 4,031
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If the stove burners don't light.
Check and make sure the LP detector is turned on.
Other D owners that may help Here.
__________________
99 Discovery 34Q ISB
2014 MKS AWD EcoBoost Toad
Fulltime Since "99"
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12-10-2013, 08:23 AM
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#10
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Senior Member
Freightliner Owners Club
Join Date: Aug 2005
Location: Chicagoland
Posts: 715
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Check out a website ; Marksrv.com rv furnace troubleshooting
It has what you need to troubleshoot.
Siggy
__________________
Siggy & Ursula.
2011 Newmar DSDP 4020 , (No DEF, 07 emission),
FTL XCR Chassis , Cummins ISL 400 HP
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12-10-2013, 05:28 PM
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#11
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Senior Member
Join Date: Aug 2001
Location: North America somewhere
Posts: 30,982
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Quote:
Originally Posted by Triker56
If the stove burners don't light.
Check and make sure the LP detector is turned on.
Other D owners that may help Here. |
 You might want to re-read what you said. I've plenty of experience at that, that's why I noticed.
__________________
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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12-10-2013, 05:47 PM
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#12
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Senior Member
National RV Owners Club
Join Date: Oct 2012
Location: Union City, Ca.
Posts: 553
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If your on and off valve from you Propane Tank is turned on and you have propane in your tank and you still cant get your furnish to light try starting your Gen Set after it start running then check your heater again to see if it will work. 
Note: Were you hooked up to power in a park or anywhere Else.
If not,it could be because of a low batter. 
Just a thought. 
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12-11-2013, 05:18 AM
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#13
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Senior Member
Fleetwood Owners Club
Join Date: Jun 2009
Posts: 4,031
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Quote:
Originally Posted by Ray,IN
You might want to re-read what you said. I've plenty of experience at that, that's why I noticed. |
Sorry I don't see anything wrong with my post after re-reading it.
His 98 D has a LP detector that needs to be turned on, to open a solenoid valve at his 25 gal LP tank. If it is off no LP appliance will work.
It is double 12V powered from his house & chassis batteries. If one set is dead the other will keep the solenoid open. His CO detector is also double powered.
I have some experience with the older D models.
Like been there done that. When running a floor sweeper and not noticing it hit the on/off switch.
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12-11-2013, 08:36 AM
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#14
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Registered User
Join Date: Mar 2010
Posts: 8,777
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When my propane furnace would blow cold but not fire, the problem was a "gunked up" LP regulator.
I replaced the 15 year old 2 stage LP regulator, ($20-$25, at any RV parts or LP dealer).
NOTE:
Propane regulators are made for either horizontal or vertical mounting.
Mine mounts horizontally, like this one: Camco 59323 RV Horizontal Two Stage Propane Regulator : Amazon.com : Automotive
Be sure you get the right one.
Mel
'96 Safari
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Linear Mode
