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Old 11-07-2012, 03:17 PM   #1
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My furnace keeps cutting off


Hi, I have an older Rheem gas pac (model RRGG-10E30JKR) that just quit heating this morning. I removed the front cover and found a reset button popped out, and reset it. (I think is a fuel metering valve but, not sure since I don't know much about HVAC) It cycled through a couple of times then lit, and burned for 2 or 3 minutes, and shut back down. There is small fan just above that that is running all the time also. Can someone point me in the right direction on what could be wrong, or where to start my diagnostics?
Thanks, Alan

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Old 11-07-2012, 05:10 PM   #2
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My furnace keeps cutting off


Could have a cracked heat exchanger.

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Old 11-07-2012, 05:17 PM   #3
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My furnace keeps cutting off


Yep. A manual reset is usually on a limit control and they don't pop for no reason. If it is a rollout switch or limit control that can be a very dangerous situation so you want to get it checked by a Pro and stop resetting it.
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Old 11-07-2012, 05:39 PM   #4
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My furnace keeps cutting off


That sounds expensive, thanks Yuri, and beenthere.
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Old 11-07-2012, 05:45 PM   #5
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My furnace keeps cutting off


Thoese units are prone to cracking and carbon buildup in the heat exchanger causing CO poisioning and flame rollout ( gas packs ).
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Old 11-07-2012, 05:49 PM   #6
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My furnace keeps cutting off


Good to know, I will get in touch with a contractor to get it checked out. thanks
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Old 11-07-2012, 06:04 PM   #7
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My furnace keeps cutting off


yep agree older rheems around here had high exchanger rate failure....get that one checked by the pros....ben sr

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