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I have an outside amana air conditioner and the fan runs all the time, even when I have the themostat turned off and nothing is coming out of the vents. The only way I can turn the fan off is to swithch off the circuit at the circuit box

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  • Duncan Jones Jul 05, 2010

    Hi,

    I found the solution: outside copressor units have something known as the "contactor". It's purpose is to supply 220 volt power to the fan and compressor. It is controlled by a 24V circuit from the inside unit. When the inside thermostat determines the air condition should turn on, the inside unit sets the circuit to the outside unit to 24V. This causes the contactor to supply 220V to start fan and compressor.

    My contactor was stuck in the "on" state so even when the input voltage was 0 (not 24V) the 220V was being supplied.

    Replacing the contactor did the trick. The Tech support guy at HvacPartsShop.com was very helpful in describing how central air units work and suggesting testing scenarios to home in on the exact problem.

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Hello

Nothing is wrong with your air conditioner i mean your air conditioner is in good form


what this mean is that there is partial contact from the wire which supply power to the air condition it self i mean your circuit box,


what you need to do from here is that unscrew and check your circuit box and locate the wire that is not well position in this box that supply power to the air condition you will fine two or three wires 1) RED,2)BLUE or GREEN 3) and any other colour in it
you are advice to check on any colour but don't the red wire because the problem is on art not supply.

Good luck and thanks for using fixya.

Posted on May 26, 2010

  • 1 more comment 
  • Duncan Jones May 26, 2010

    Thanks - I see three wires( a green, a blue & a black) coming from somewhere within the unit to the actual fan motor. Are these the wires you are referring to or are are you referring to wires coming in from the circuit breaker (which is 220 volts I think). There is a disconnect switch on the wall right next to the unit (and when I pull out the black handle the unit stops). If the fan continues to run, are there other things in it that are also running, like the compressor?



    Thanks,

    Duncan

  • Oloyede Monsuru May 26, 2010

    hello

    if you have check on the and non of the wire is disconnected then you have to check
    on the wire of the fan if there is any disconnected then you will have to do the fixing as
    directed before

    if after this and all remain same this mean that the fan have brig internally which you will
    have to take care of by unscrew it and trace the core


  • Oloyede Monsuru Jun 04, 2010

    hello,

    duncan what is the condition of the fan


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