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    csgmail1's Avatar
    csgmail1 Posts: 1, Reputation: 1
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    #1

    Feb 2, 2007, 09:49 AM
    Old Sears furnace
    We have an older(at least 20 years that we know of) Sears series 600 furnace. Recently the blower started coming on for 10 to 15 seconds than shutting off. After 3 or 4 times of doing this furnace will run through a normal cycle. Also ,sometimes the blower will come on as soon as the burner lights without going through a "warm up" cycle like it has done for years. Any help or ideas are appreciated. Thanks.
    NorthernHeat's Avatar
    NorthernHeat Posts: 1,455, Reputation: 132
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    #2

    Feb 2, 2007, 03:58 PM
    https://www.askmehelpdesk.com/heatin...tml#post269001
    https://www.askmehelpdesk.com/heatin...tml#post269005
    My guess is a faulty fan limit control, here are pictures of the 2 most popular used, which one is in your furnace? If it is the Cam-stat I think that will be your problem.
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