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Problems with Furnace

My furnace will not kick on when I have my thermostat set to Auto. It kicks on when I have it set to On, but it blows out cold air. I have a York Diamond 80 with a White Rodgers 50A50-241 mother board.

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On is just the blower fan nothing else, check to see if there is a reset button in the tstat or tripped over load inside the furnace, inside the furance is some safetys, you will see wires runing from each other and finaly to the gas valve, push each untill one of them clicks,then your furnace should start back working, but I would still have someone come out and check why it tripped, because as I said it is a safety, and when it tripps it is for a reason.

Posted on Oct 19, 2008

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Furnace will not kick on. air will not kick on


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My heater blows cold air why? I have a REAB 1010s need manual


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Jul 15, 2010 | Heating & Cooling

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Have you confirmed that the thermostat is programmed correctly?

Did the thermostat ever control the temperature of the house properly?

When you indicate "kick", are you talking about flipping the Auto-On switch back and forth? The Auto-On switch only controls the fan, and no heating or cooling (Auto - fan runs on call for heat or cool, On- fan runs all the time.).

If "kick" means making the heating work, and if you have the same problem for making the cooling work, chances are good you have bad thermostat.

If the problem only occurs with the heating, and cooling works fine, then the problem could be in the controller board of the furnace, assuming you have a more recent (1990's or newer) furnace.

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1 Answer

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Sounds like you have a problem upon start up of heat. Your safteys maybe shutting you down, and restting voltage to your curcuit board allows you to have another heating cycle. Honestly you may due justice calling a tech.

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