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    steelers8452's Avatar
    steelers8452 Posts: 3, Reputation: 1
    New Member
    		  
    #1

    Jul 31, 2012, 12:37 PM
    A/C help
    My condenser quit working. The contacter engages and make humming noise but fan and compressor won't start. Any ideas on what the problem is. Thanks
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Jul 31, 2012, 01:30 PM
    Quote Originally Posted by steelers8452 View Post
    My condenser quit working. The contacter engages and make humming noise but fan and compressor wont start. Any ideas on what the problem is. Thanks
    You need to be sure you have 220/240 volts on both sides of the contactor when pulled in. Check fuses and breakers in the disconnect outside and also in the main breaker panel in the home.
    steelers8452's Avatar
    steelers8452 Posts: 3, Reputation: 1
    New Member
    		  
    #3

    Jul 31, 2012, 01:40 PM
    I get 220/240 when thermostat is off, but when on all I get is humming noise and no reading.
    steelers8452's Avatar
    steelers8452 Posts: 3, Reputation: 1
    New Member
    		  
    #4

    Jul 31, 2012, 01:45 PM
    Quote Originally Posted by hvac1000 View Post
    You need to be sure you have 220/240 volts on both sides of the contactor when pulled in. Check fuses and breakers in the disconnect outside and also in the main breaker panel in the home.
    I get 220/240 when thermostat is off, but when on all I get is humming noise and no reading.
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