I have a Coleman furnace model DGAA090BDTA. It is blowing out cold air on the heat cycle. The flame is on, and the diagnostic light is steady green (no flashes). Any ideas as to the problem?
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I have a Coleman furnace model DGAA090BDTA. It is blowing out cold air on the heat cycle. The flame is on, and the diagnostic light is steady green (no flashes). Any ideas as to the problem?
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