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Old 10-19-2021, 06:06 PM   #1
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Atwood 8525-IV furnace blowing warm air only?

We've had our Zinger 180-RB for 7 years. We camp 3 seasons. Our 3-ducted furnace has always worked well and put out a lot of heat, so much in fact that you couldn't stand on a register for too long without having to remove your foot from it. We boondock camp in early spring to late fall in Michigan, mostly on battery, or generator while batteries are charging. Just got back from a 12 day trip with the furnace only putting out warm air. Since I never had a problem before with it I had no reason to measure it's output. The output air flow doesn't seem any different than before and will warm the trailer, it just takes longer (lowest night temp was 37F). Ignition is no problem, lights on the first click. No funny propane or burner smells. Nothing seems any different from the last 7 years except the furnace output air temperature. All other propane appliances worked properly over the last 12 days, fridge, stove, outside grill, water heater. Anyone ever experience anything like this?
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Old 10-19-2021, 07:38 PM   #2
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Here is a link to a timely article that was here on the forum. Maybe you can get some helpful hints from it.

https://www.doityourselfrv.com/rv-fu...wing-cold-air/
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Old 10-20-2021, 05:59 PM   #3
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Fixed!

I fixed my low heat problem. Removed the furnace and thought it might be the burner or orifice not functioning properly. Lo and behold there was a TINY bug partially blocking the orifice! The orifice is only 1.45mm so a bug partially blocking the opening was only allowing some of the LP to get through. Now that's one for the books! Here's a photo of the orifice and the bug.

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Old 10-20-2021, 07:45 PM   #4
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Good deal Jim.
That bug kinda looks like a mosquito to me.
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Old 10-20-2021, 08:14 PM   #5
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Quote:
Originally Posted by Lloyd View Post
Good deal Jim.
That bug kinda looks like a mosquito to me.
I would be curious to know what it was, and how it got there, as it was wedged on the inside coming out of the orifice.
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Old 10-20-2021, 08:18 PM   #6
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Spiders are also good for doing the same thing. Glad you got it fixed and thanks for letting us know what it was.
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Old 10-22-2021, 08:34 AM   #7
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My wife had a had time understanding the actual size of the offending bug, so here's a better shot. It actually looks like it has a stinger, like a bee. Wonder how a dealer would have handled/ charged to fix this? Ignore the staple holes in the finger...

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Old 10-25-2021, 09:54 PM   #8
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LOL

robbed us of the staple holes story.
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