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    0qwerty's Avatar
    0qwerty Posts: 1, Reputation: 1
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    #1

    Jun 21, 2012, 10:52 AM
    Goodman Heating Pump Parts
    I have a Goodman Split Unit Heat Pump that has a chattering Contactor. It is only getting 18 volts to the Contactor, but when you disconnect it, the voltage rises to 28 volts. I have put several Contactors of different brands on it with the same results.
    Any suggestions?
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Jun 21, 2012, 11:38 AM
    Quote Originally Posted by 0qwerty View Post
    I have a Goodman Split Unit Heat Pump that has a chattering Contactor. It is only getting 18 volts to the Contactor, but when you disconnect it, the voltage rises to 28 volts. I have put several Contactors of different brands on it with the same results.
    Any suggestions?
    Could be a weak transformer, It might show voltage but not enough milliamps/VA. Use a minimum of 40 VA for the transformer. Now loose low voltage wiring can cause this and I have seen thermostats cause this problem also. Good luck.
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