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    andyroo315's Avatar
    andyroo315 Posts: 3, Reputation: 1
    New Member
    		  
    #1

    Oct 30, 2007, 07:52 AM
    Limit switch setting
    Just bought a house with a new furnace installed last year but never used because the previous owner passed away so I'm working out all the bugs out. Took care of the thermostat issue now its setting the limit switch... right now low is 110 med is 155 and high is 200 the blower doesn't blow for longer than a minute

    It's a williamson centenial 85000-105000 BTU oil forced air, my house is a 1 story ranch 1050 sq feet. Any help would be greatly appriciated...
    hixton's Avatar
    hixton Posts: 146, Reputation: 5
    Junior Member
    		  
    #2

    Nov 2, 2007, 08:45 PM
    I would check to see what speed the blower is set at if its direct drive or if it's a pulley system you could change the speeds
    T-Top's Avatar
    T-Top Posts: 1,871, Reputation: 100
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    #3

    Nov 2, 2007, 09:02 PM
    The first setting is the blower off temp the second blower on and the third is high limit. I would move the blower off down to about 95 the blower on is a little high I would try about 140. If its cold in your house the blower will cycle a few times until it catches up. If you have a weak fan/limit control it will act the same way and the only way to get it right is to replace it.
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