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    350257's Avatar
    350257 Posts: 2, Reputation: 1
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    #1

    Nov 17, 2007, 09:02 PM
    Furance short cycles
    I have a carrier 8000 furnace model#58ZAV050-08-serial#3395A20997. In the past ten days the furnace cycles through and run for a while then shuts down.I'm not getting any LED codes. The flame sensor looks good, the high pressure switchseems OK,no indication of a cracked exchanger the flames in the burner don't act funny and jump around. I don't know if it might be the combustion blower or the seliniod in the gas vavle. Can someone help me out please?:cool: :cool:
    hixton's Avatar
    hixton Posts: 146, Reputation: 5
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    #2

    Nov 18, 2007, 06:26 AM
    You might want o check to make your thermostat isn't opening up and closing otherwise it could be the control board I've had a lot of problems with that board before
    350257's Avatar
    350257 Posts: 2, Reputation: 1
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    #3

    Nov 18, 2007, 07:14 AM
    Quote Originally Posted by hixton
    you might want o check to make your thermostat isn't opening up and closing otherwise it could be the control board I've had a lot of problems with that board before


    Yesterday before I received your answer I installed a digital honeywell stat. The one that I had was round and very old. Last night until 9:00A.M. today it's been working fine. I hope that's all it was . Thanks for your time and answer.
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