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    drdecibel Posts: 1, Reputation: 1
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    Oct 4, 2009, 03:37 PM
    Carrier furnace blows 3 amp fuse after burner and blower fan have been on for a while
    Carrier furnace with 4 LED control board
    3 amp fuse opens after burner and circulation fan has been on for awhile 26Vac pulls down to 8 volts ac
    Replaced with 5 amp fuse and it does not open and furnace operation seams normal.
    Valve control is a White Rodgers 36E
    What should the resistance of the coils be.
    I am thinking coil resistance lowers when coils warm up.

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