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    ANDY66's Avatar
    ANDY66 Posts: 2, Reputation: 1
    New Member
     
    #1

    Oct 14, 2012, 11:06 AM
    3 amp fuse blows
    Hello,
    I have a 20 year old electric furnace, both the outside and inside unit are called a comfort maker,and are made by a company called Inter city products.
    The air conditioner works perfect, both inside and outside units. As soon as the thermostat is turned to heat, it blows the 3 amp fuse,both units do not function. I did replace the thermostat to see if that would help, the problem is still there?

    Andy
    Stratmando's Avatar
    Stratmando Posts: 11,188, Reputation: 508
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    #2

    Oct 14, 2012, 11:51 AM
    Can be the control wire for heat shoted(white, most I see), or Maybe more likely, the Heaters Relay or Contactors Coil is shorted. Disconnect at the Heat contactor's coil, insulate, and if it doesn't trip, That Contactor/Relay appears bad.
    A meter can help a lot, can be done without.
    It will cost you fises?
    ANDY66's Avatar
    ANDY66 Posts: 2, Reputation: 1
    New Member
     
    #3

    Oct 28, 2012, 05:28 PM
    Hello Stratmando,
    Thank you so much for the reply! I switched the white (AUX) for a spare brown thermostat wire, at the thermostat, in the attic, and the outside unit.
    I did replace the contactor, and the problem is still the exists. Sorry for the delayed response I had to wait for the part to arrive.

    Thanks Andy

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