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Old 11-01-2006, 07:31 PM   #1
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Rheem Furnace problem

I have a rheem furnace with 5 inshot burners. sometimes only the first one on the right comes on then the unit shuts down 5 seconds later......I have cleaned and aligned the crossover tubes and checked the gas pressure in and out of the valve in is 12"wc and out to the burners id 11"wc....can anyone help me?....Its COOOOOOLD!!!!


Last edited by tbonebilly; 11-01-2006 at 07:40 PM.
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Old 11-01-2006, 07:46 PM   #2
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Hi tbonebilly

It sounds like to me that you may need to replace burners. If burners are badly rusted, you will need to do so. If they are not badly rusted you will need to use a small wire brush and clean them well. I am assuming that by the pressure you are on propane. If that be so you will also need to check for sooting. If there is any soot ( black cakey stuff ) inside the heat exchanger this will have to be dealt with before going any further. The other thing is unscrew and check the burner orfices, spyders sometimes build nests inside them over the summer. You can clean them with water or what ever you have available to you once you remove them from the manifold. The other thing I would reccomend is to check the data plate for LP pressure. 11-12" is a little high for a manifold pressure, 9-11" is pretty common. Let us know if I or any of the other members can help.

Good luck.


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Old 11-17-2007, 06:28 AM   #3
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I have an old RHEEM furnice maybe 15 yrs old or older the past two yrs, it would shut off. What I mean is it runs ok and then at times the roll out switch would pop and then I would rset it. It doesn't happen that often, lately more than what I'd like. I was wondering if cleaning it with a vacuum cleaner and just getting the dust and dirt out of it, and their's something that looks like charcoal just below the pilot light. I read quit a few of your responses to other's with similiar situation which I really got good info of what I might do. But their hasn't been any type of regular cleaning or even once nothing has been done for years. The first time the furnance wouldn't start, which was about two years ago, I called the hvac pro.and he started it right up and mentioned it needs cleaning or some other work or a new furnance. So I took the advice you gave to someone else, brought new air filters and I wanted to Know how to go about cleaning it up real good, If it were possible. And Thank You in advance.
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