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Old 07-23-2012, 09:13 AM   #1
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Furnace issue

Our first issue with our 1year + Crusader. Tried to fire up the furnace this weekend and the blower would come on and then I could hear the igniter fire and the main burner light. The main burner would then shut back off. It wouldn't shut down immediately but would taper off over about 1/4 to 1/2 a second, like it was burning gas left in the line. Wondering if anyone else has had an issue like this. It seems like a gas delivery issue as i would expect a bad thermocouple to shut the burner down immediately and not taper off? any thoughts?
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Old 07-23-2012, 09:23 AM   #2
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Furnace? Really??? It's supposed to be 98 degrees here today with a heat index of 106. SO wish we had furnace weather.
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Old 07-23-2012, 10:11 AM   #3
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Furnace? Really??? It's supposed to be 98 degrees here today with a heat index of 106. SO wish we had furnace weather.
About 10,000 ft high in the Bighorn mountains gets a little chilly at night. 56 degrees saturday night.
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Old 07-23-2012, 10:16 AM   #4
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Try shutting off propane tanks and waiting a few seconds then turn them on very very slowly.

Might also be a little air in the line.
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Old 07-23-2012, 10:27 AM   #5
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Try shutting off propane tanks and waiting a few seconds then turn them on very very slowly.

Might also be a little air in the line.
Thanks, I will try that. I just so happens that I just filled my RH tank a week ago. First time I have filled propane since I bought the camper. The LP switching device was making some noise when the furnace burner woudl first kick in? water heater and other stuff seems to work fine but I think the furnace gas usage rate is a lto higher than anything else?
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Old 07-23-2012, 10:47 AM   #6
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That's what I'm guessing.
Try the valve closing trick.
Ron
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Old 07-23-2012, 09:52 PM   #7
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Quote:
Originally Posted by sbelliott View Post
Our first issue with our 1year + Crusader. Tried to fire up the furnace this weekend and the blower would come on and then I could hear the igniter fire and the main burner light. The main burner would then shut back off. It wouldn't shut down immediately but would taper off over about 1/4 to 1/2 a second, like it was burning gas left in the line. Wondering if anyone else has had an issue like this. It seems like a gas delivery issue as i would expect a bad thermocouple to shut the burner down immediately and not taper off? any thoughts?
Check the air venturie (sp). Sometimes spiders and other critters build webs and/or just interfere with the air flow which results in an inefficient burn. Enough blockage and the flame could just go out. I had to clean a nest of stink bugs out this spring. It was easy after they were fried and crispy. Then I just blew them out with a little compressed air in a can.
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