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Thread: AC blower does not work in AUTO position

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  1. #1
    DIY Junior Member pmhabo's Avatar
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    Default AC blower does not work in AUTO position

    My AC blower won't kick on when in the AUTO fan position. Works fine when I switch to the "ON" position.

    What might this be? How can I fix it?

  2. #2
    Retired Defense Industry Engineer jadnashua's Avatar
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    Brand and model of thermostat and the rest of the HVAC equipment may help.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer

  3. #3
    DIY Junior Member pmhabo's Avatar
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    Thermostat is a Filtrete 3m-22 http://www.radiothermostat.com/filtrete/products/3M-22/
    System is an all electric heat pump/AC system

  4. #4
    Jack of all trades DonL's Avatar
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    Quote Originally Posted by pmhabo View Post
    Thermostat is a Filtrete 3m-22 http://www.radiothermostat.com/filtrete/products/3M-22/
    System is an all electric heat pump/AC system
    Welcome to Terry's Forums pmhabo,

    How many wire conductors do you have connected to the thermostat ?

    Did you check/set the jumper and the switch settings for your type of unit ?


    What model of heat pump/AC system are you operating ?


    Have a good day.


    DonL
    Don't pay someone to do a job fast, when you can do a half-fast job yourself.

  5. #5
    DIY Junior Member pmhabo's Avatar
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    Connected wires to thermostat as per: http://www.radiothermostat.com/filtr...on-10may10.pdf -Page 15: 5 Wire HEAT PUMP with Auxiliary Heat
    Didn't have "B" wire, did connect "O" wire. Switches set to HP, electric - as per page 8 of manual

    I'll have to check what model heat pump/ac system I have later tonight.

  6. #6
    Jack of all trades DonL's Avatar
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    Quote Originally Posted by pmhabo View Post
    Connected wires to thermostat as per: http://www.radiothermostat.com/filtr...on-10may10.pdf -Page 15: 5 Wire HEAT PUMP with Auxiliary Heat
    Didn't have "B" wire, did connect "O" wire. Switches set to HP, electric - as per page 8 of manual

    I'll have to check what model heat pump/ac system I have later tonight.

    Has it always been that way ? Sense you installed the T-Stat ?

    It sounds like a simple wiring problem. The make and Model of the Heat Pump would help you get the correct answer.


    Enjoy your day.


    DonL
    Don't pay someone to do a job fast, when you can do a half-fast job yourself.

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