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Old 07-07-2011, 03:07 PM   #1
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Coleman forced air furnace, problem w/ AC.


About a week ago I noticed blower would stop working when AC is on but would come back on and of and on and then on and run normal. Also I noticed when this happened Condensor fan outside would continue to run normally. I then would catch it turning off and switch from Auto to manual at thernostat and back again which once it did start to work (Blower)it did fine. I noted that when I did switch it to fan it would not run either, but it did this back and forth. What I mean is the Fan would work in auto and in manual positions like normal. Well needless to say it stopped working and when I went into the attic w/ AC off the Limiter overide to the blower would work and blower would work fine untill I tried to turn AC on. I un plugged Relay and notice the # one post where it goes is melted and black as if burned. All I hear is clicking. I now know I will have to replace relay, but I"m wondering what may have caused the problem in the first place. Any help would be useful. Thanks in advance. Pleas hurry Wife is climbing the walls and I don't mean in a good way, lmao. Thanks again.

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Old 07-09-2011, 01:04 AM   #2
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Coleman forced air furnace, problem w/ AC.


36 views in two days and no replies. I'm no to happy w/ this DIY forum. How do you delete my original registration or do I just leave. Maybe someone can answer that. :furi ous:

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Old 07-09-2011, 07:04 AM   #3
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Coleman forced air furnace, problem w/ AC.


faulty relay, loose connections, normal wear and tear, power surge.
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Old 07-09-2011, 07:08 AM   #4
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Coleman forced air furnace, problem w/ AC.


One long continuous paragraph makes for a hard post to read. And often gets little to no response.
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Old 07-09-2011, 07:16 AM   #5
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Coleman forced air furnace, problem w/ AC.


Sorry I thought you figured the problem out, burnt blower relay. Can't say why from here but if you check all the high and low voltage wiring connections,capacitor and motor amp draw then the reason might show.
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