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

    Jun 27, 2007, 06:19 PM
    Air conditioner, blower fan speed with carrier furnace
    The fan speed does not adjust when the air conditioner is on . Is this normal ? If I turn the set temp up high enough the air conditioner turns off and the adjustability returns. Auto, low, medium and high all work. When I set the temperature back down so the air conditioner turns back on the blower on the furnace goes back down to low, and will not go any higher. Any info would be great.

    Thanks

    Mark
    hvacservicetech_07's Avatar
    hvacservicetech_07 Posts: 1,083, Reputation: 75
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    #2

    Jun 27, 2007, 09:45 PM
    Is this a variable speed motor?
    OtttawaDad's Avatar
    OtttawaDad Posts: 2, Reputation: 1
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    #3

    Jun 28, 2007, 04:41 PM
    Quote Originally Posted by OtttawaDad
    The fan speed does not adjust when the air conditioner is on . Is this normal ? If I turn the set temp up high enough the air conditioner turns off and the adjustability returns. Auto, low, medium and high all work. When I set the temperature back down so the air conditioner turns back on the blower on the furnace goes back down to low, and will not go any higher. Any info would be great.

    Thanks

    Mark
    Yes it is, it's a 58CVA variable speed furnace. It does work correctly when the air conditioner is off. It just not variable when the air conditioner is on.
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