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Old 06-07-2009, 10:04 PM   #1
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1974 27' Overlander
youngstown , Alberta
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Pilot light goes out on furnance

my pilot light keeps going out when its windy out does anyone else have this problem or know how to fix it....
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Old 06-07-2009, 10:40 PM   #2
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1989 34.5' Airstream 345
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I've read of this problem on other threads. The appliances were water heater tank & fridge. Some stated there was a thin steel baffle that blocked the wind from blowing out the fridge pilot while driving. You may have knocked a similar baffle loose inside the combustion chamber. Start there. Maybe one of those screens to keep the bees out of exhaust pipe might be enough to lessen the wind blow. Is the pilot light as strong as it always was? I've also read about the pilot light tubes getting blocked by spiders & their webs over while in storage.
Ricky
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Old 06-18-2009, 02:38 PM   #3
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You might want to check the thermalcupler, it is what stops the gas when the flame is gone and what has to heat up when you first light it for the flame to stay on. Some time they get bumped away from the flame to far and with a little wind will get cool enough to shut the gas off. That's what happen on my unit after a service center told me to I didn't need the $400 repair I thought was a bad unit.
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Old 06-18-2009, 02:45 PM   #4
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It could also be due to a weak pilot light, which can be adjusted on the controller. But you should check both the size and the location of the pilot in relation to the thermocoupler. Too big of a flame will just waste propane.
Good luck and welcome
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Old 06-18-2009, 02:56 PM   #5
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Sometimes just replacing a thermocouple all together is the quickest way to resolve any issues with a furnace not lighting or staying lit.
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Old 07-04-2009, 08:25 PM   #6
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1967 26' Overlander
Reno , Nevada
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Pilot Light problems on NT-22 Furnace

The pilot light on my 67 Overlander works about 20% of the time. The rest it goes out. Have read this is a problem with NT-22 furnaces.

Also just read about the thermocouple solution.

Has anybody has experience with the NT-22. Was thinking of replacing it with an NT-30 using the NT-22 case as listed on the Airstream forum, but if the Thermocouple would work, or another similar fix, much easier and less expesinve.

Any insights from anyone?

6726
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Old 07-06-2009, 08:02 AM   #7
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Just took my latest purchase out for the long weekend, 34' Excella, and while out had to start going over it looking for issues. found the pilot set about 3/8" from the sensor, which worked great even with the storms we had. I did recall about it being set to close, if the distance is to close the flame will not get it hot enough, this was found to be the case with the 31' I had and once moved and tighten in place it worked. This was both the solution in the 31' for the furnace and the water heater. I also had to put the wind baffel on the furnace with a screen to get the correct 'flame out' protection as I found the screen was part of the original design.
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Old 07-06-2009, 01:09 PM   #8
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1967 26' Overlander
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NT22 Furnace Pilot lite problems

Thanks for the responces. On the web I found an NT-22 service manual with diagnostic pilot lite trouble shooting tests on page 13.

http://www.bdub.net/manuals/Suburban...DTM%204-76.pdf

Will go through the steps and also check thermocouple spacing and other suggestions and post the results.
Thank you all again,
6726
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