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    Donna M's Avatar
    Donna M Posts: 1, Reputation: 1
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    #1

    Feb 28, 2009, 10:47 PM
    Blower does not shut off
    Have a Carrier Furnace and the blower won't shut off. My furnace will not heat since this has happened. Put in clean filter. Red LED reads 3 short and 3 long lights
    wmproop's Avatar
    wmproop Posts: 3,749, Reputation: 91
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    #2

    Feb 28, 2009, 11:04 PM
    3 short and 3 long do you have a sheet glued to the inside of the door/cover, the codes should be on it,
    himeeh's Avatar
    himeeh Posts: 5, Reputation: 4
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    #3

    Feb 28, 2009, 11:05 PM

    Sounds like the thermostate is stuck, not connected broken or fan switch is on constantly
    KC13's Avatar
    KC13 Posts: 2,556, Reputation: 99
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    #4

    Mar 1, 2009, 08:44 AM
    Code 33 is a limit switch fault. You replaced the air filter - was the old one clogged? If so, the main limit switch may have been cycling the unit for some time, and could now be stuck open. There could also be a tripped auxiliary limit switch. If so, will require manual reset.
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