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My Coleman Evcon furnace DGAT090BDD has been acting up, it will ignite, flame will come on, blue, and then after a couple of seconds it will turn off and start the cycle again. Thought that the pipe was plugged on roof from snow, so cleared it, there was only a bit of ice hanging from the roof cap. Also changed the filters on front of furnice, thinking they were clogged up. When the front covers are off the furnice it seems to work fine, but once the covers are on, it does the recycling over and over. The furnice is not showing a code of anything wrong, so i dont know what else to do.

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You may have a dirty flame rod. It is located in the flame of the last burner that lights up. Polish it with a small brush.

Posted on Jan 01, 2011

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Posted on Jan 02, 2017

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