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12-05-2013, 12:15 PM
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#1
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Senior Member
Join Date: Aug 2013
Location: Cameron Park, California
Posts: 156
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Propane Coach Furnace
I noticed that our coach propane fired furnaces run fine when on shore power or when the engine is off. However, when rolling down the road they do not work properly. Does the generator need to run for them to work? It is a 2014 Fleetwood Discovery 40X. Service Advisor was not sure but thought the generator was needed when traveling. Others experiences?
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12-05-2013, 12:26 PM
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#2
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Senior Member
Join Date: Nov 2009
Location: Warren, Oregon
Posts: 2,560
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It may be wind or you may try turning on your inverter same as if you had the genset running because your alternator will charge your batteries.
2 stroker
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2006 Country Coach Inspire 360 40ft Genoa Designer Series, Samsung 197 RR
Cat C9--STEEL & COPPER Bolt Together Radiator w/ updated rubber mounting
SilverLeaf 330 Magnum 2812 PSW 2011 Ford Edge Sport-Air Force One
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12-05-2013, 12:36 PM
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#3
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Senior Member
Damon Owners Club Workhorse Chassis Owner
Join Date: Mar 2009
Posts: 24,024
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They should work the same parked on battery power, On Shore power driving down the road on engine alternator power.
HOWEVER there are two possible issues.
First: DO they work normaly on battery power (not plugged in, generator not running, on pure battery power) if the answer is yes, then it's not the first:
THe engine alternator on MOST motorhomes (if not all) is suspposed to charge the house bateries in addition to the chassis.. now if you have "Big loads" (REsidential Fridge on an inverter for example) it may not be able to keep up.
OR.. If there is something wrong with teh isolator, alternator, or wiring,
THe second suspect, this applies IF it works fine on pure batttery power.. Someimes if the burner needs a bit of attention the wind of movement can blow it out. Preventive Maintenace procedures outlined in the furnace owner's manual may fix this.
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Home is where I park it!
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12-05-2013, 02:01 PM
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#4
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Senior Member
Join Date: Aug 2013
Location: Cameron Park, California
Posts: 156
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Thanks for the replies. The furnaces work fine on battery power. As we roll down the road I hear them fire but just don't light for long. Will look in the manual for preventative maintenance. Hopefully just an adjustment and all will be good. Otherwise back to the dealer when I need to have something else looked at.
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12-05-2013, 04:44 PM
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#5
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Registered User
Join Date: Dec 2013
Posts: 120
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Quote:
Originally Posted by algolfer
Thanks for the replies. The furnaces work fine on battery power. As we roll down the road I hear them fire but just don't light for long. Will look in the manual for preventative maintenance. Hopefully just an adjustment and all will be good. Otherwise back to the dealer when I need to have something else looked at.
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and have the service advisor brush up on the RV,s he,s suppose to be having repaired.
The fact that Both of them act up and in the same fashion is weird.
One I can see as sidewinds etc. can adversely effect LPG furnaces when driving down the highway
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12-06-2013, 08:41 AM
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#6
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Senior Member
Join Date: Aug 2013
Location: Cameron Park, California
Posts: 156
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McRvnut - I agree with you. The response I received from the service advisor did not sound correct, hence my post here. I can see running the generator for the A/C or the heat strips in the A/C but not fan furnaces. Will take it in and have them look at it since it is still under warranty.
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12-07-2013, 08:44 PM
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#7
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Senior Member
Tiffin Owners Club Freightliner Owners Club
Join Date: Apr 2012
Posts: 2,079
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Do they run ok when you run the generator running down the road. If they do then it would sound like your coach batteries not keeping up either through not being charged by alternator or too big an inverter load.
If they do not run ok with the generator running then probably going to be a wind problem as suggested.
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12-08-2013, 03:59 PM
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#8
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Member
Winnebago Owners Club
Join Date: Jan 2013
Location: Somerset WI
Posts: 34
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Dumb assumption. I thought the gen had to be on to run furnace down the road. Soooo the furnace fan just draws off the coach batteries which are recharged by the alternator? I am still learning, thought I knew everything, dam it.
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12-08-2013, 04:30 PM
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#9
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Senior Member
Damon Owners Club Workhorse Chassis Owner
Join Date: Mar 2009
Posts: 24,024
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Yes the furnace is a 12 volt device (Battery powered)
The one limit I see is this. That blower sucks major amps (not sure how many but I'll bet it's double digits) and it may be the path from the alternator to the house system for re-charge is a bit...er.. long and thus the alternator can't push enough amps to the batteries to keep things running.
But.. That said.. I seriously doubt that is the problem. I'm basically shotgunning here and that's the only pellet not already on target.
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Home is where I park it!
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12-08-2013, 06:21 PM
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#10
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Senior Member
Tiffin Owners Club Freightliner Owners Club
Join Date: Apr 2012
Posts: 2,079
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Quote:
Originally Posted by wa8yxm
Yes the furnace is a 12 volt device (Battery powered)
The one limit I see is this. That blower sucks major amps (not sure how many but I'll bet it's double digits) and it may be the path from the alternator to the house system for re-charge is a bit...er.. long and thus the alternator can't push enough amps to the batteries to keep things running.
But.. That said.. I seriously doubt that is the problem. I'm basically shotgunning here and that's the only pellet not already on target.
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I would be surprised if that was the case. I have a residential refrigerator and I run it off of the inverter going down the road. The alternator keeps the batteries charged enough to do that and I would not imagine the fan on the furnace is a bigger draw than a refrigerator compressor.
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12-08-2013, 06:30 PM
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#11
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Senior Member
Join Date: Nov 2013
Posts: 188
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Quote:
Originally Posted by rhlvr1
Dumb assumption. I thought the gen had to be on to run furnace down the road. Soooo the furnace fan just draws off the coach batteries which are recharged by the alternator? I am still learning, thought I knew everything, dam it.
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I did too.
Barry Boyette
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Barry Boyette
2004 Country Coach Allure
Cummins ISL 370
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12-08-2013, 06:40 PM
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#12
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Senior Member
Join Date: Feb 2013
Posts: 944
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Quote:
Originally Posted by algolfer
Thanks for the replies. The furnaces work fine on battery power. As we roll down the road I hear them fire but just don't light for long. Will look in the manual for preventative maintenance. Hopefully just an adjustment and all will be good. Otherwise back to the dealer when I need to have something else looked at.
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If it does not stay lit, try cleaning the thermocouple with something like a scotch brite pad. Sometimes that will help.
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