Fan only blowing got air??

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  1. Fan only blowing got air?? 
    #1
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    Jimmy James's Car Details
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    Fan only blowing *HoT* air!


    So not long owned my 2001 330ci and just noticed that it doesn't blow any cold air whatsoever... Only hot air comes out even if its turned way down to 16 degrees with AC on.

    Any ideas what could cause this?

    In guessing maybe the heater control itself is not working properly, but all seems ok.

    Thanks.
     
     

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    it will be one of 2 things
    1 heater control valves are stuck open
    2 control panel is not working
    test the plug on the valves with the heat turned down
    if there is no voltage its the control panel
    if there is voltage then its the valves
     
     

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    Thanks mate i'll have a look later. Where are the valves located?
     
     

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    under the bonnet passenger side near the bulk head
     
     

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    #5
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    I would check the electrical water valve in the engine bay. When the valve has failed or not connected to the car's wiring loom, the valve will default to open, which means hot air! With the ignition on, the valve should clunk as it opens and closes. Water flow is adjusted by varying the open time of the valve.
     
     

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    I have the same problem with my heater, did it effect your water usage? My radiator needs filling every 2 days
     
     

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