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Old 01-30-2011, 04:08 PM   #1
2 Rivet Member
1988 34' Excella
1993 30' Excella
Hillsboro , Texas
Join Date: Oct 2003
Posts: 51
Ignitor Carbon, Poor Heat

Was having problems with carbon buildup on the ignitor and with poor heat output. Had to scrape the carbon off the ignitor frequently, and the heat rise was about 60 degrees (should be about 90 degrees). Blower motor was also making noise. Ordered new blower motor and removed furnace to replace it. Here's what I found:
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Old 01-30-2011, 04:25 PM   #2
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1978 28' Ambassador
Morada , California
Join Date: Jan 2006
Posts: 1,584
I guess you weren't aware of the furnace, heat blocking, 'ceramic disc' option offered for users with their rigs located near the Equator....

I think it's time to look into: here's a typical type...not an endorsement of the parts house...

Save at RV Partscenter - RV Parts and Supply

Installing external screens were one of our first mod's - those *^^$& mud wasps are productive little devils around this neck of the woods...
Ray & Pat; Morada, CA
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Old 01-30-2011, 04:51 PM   #3
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2016 27' International
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Wilton , California
Join Date: Aug 2008
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Im not a big fan of mud wasps.. we have them everywhere and Im constantly finding their handywork.

"Old fashioned service on your late model Airstream"
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Old 01-30-2011, 05:31 PM   #4
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1971 27' Overlander
Currently In: Skowhegan , ME
Join Date: Jul 2010
Posts: 703
Images: 16
I had the exact same thing happen to ours -- I completely rebuilt it and haven't had a issue with it since (it took a little adjustment to get everything balanced). Once thing I did add was a screen to prevent them from entering again.

Visit our crazy full-timing blog (us,kids and dogs living the dream):

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Old 01-30-2011, 06:03 PM   #5
2 Rivet Member
1988 34' Excella
1993 30' Excella
Hillsboro , Texas
Join Date: Oct 2003
Posts: 51
These little buggers did all this prior to my acquiring this AS. I did add the screens shortly after i bought the unit. Suburban does not suggest using the screens when the furnace is in use, as they feel they reduce air flow. The maker of the screens claims this is not an issue. Make up your own mind!
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Old 01-30-2011, 06:09 PM   #6
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1990 34' Excella
Springfield , Missouri
Join Date: Dec 2010
Posts: 84
Images: 4
Blog Entries: 3
We use screens - and inspect every fall before we fire up the furnace. Our 'soot' was burnt Mercam - from the end of the tanks. I think we've about solved that problem - but we'll know soon - temps are going to drop into the 'minus digits'.......which means that the propane will really act different. Oh well - we have to go through February to get to spring - that's how it works!!! We've also got snow, ice, rain, sneet, snain - all that forecasted so it ought to be good for business (autobody/collision).........

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