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    rick dominguez's Avatar
    rick dominguez Posts: 8, Reputation: 1
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    #1

    Jan 23, 2010, 08:16 AM
    Unit has a fuse which keeps blowing
    Have ac unit which has a 5amp fuse between the transformer and the thermostat-i turn the thermostat to fan and it blows air-but when I turn the heat or ac on it blows the fuse everytime-replaced capacitor and contactor on outside unit and still doing the same.
    Stratmando's Avatar
    Stratmando Posts: 11,188, Reputation: 508
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    #2

    Jan 23, 2010, 08:23 AM

    Disconnect low voltage wires, insulate at compressot contactor and set to cool, If it still blows fuse, you have a problem with control wiring.
    rick dominguez's Avatar
    rick dominguez Posts: 8, Reputation: 1
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    #3

    Jan 23, 2010, 08:29 AM
    Quote Originally Posted by Stratmando View Post
    Disconnect low voltage wires, insulate at compressot contactor and set to cool, If it still blows fuse, you have a problem with control wiring.
    Disconnected low voltage wires and nothing happened to fuse-replaced thermostat and wired accordingly-connected low voltage outside and still blew the fuse again
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