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    henrysun88's Avatar
    henrysun88 Posts: 1, Reputation: 1
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    #1

    Oct 11, 2009, 11:40 PM
    Where is fuse for my furnace
    I have old Rheem furnace which air conditioner also connects to. After I replace thermostat, now the furnace and AC will not start. I believe most likely the fuse is fried, but where is the fuse? Attached are pictures of my furnace.
    hvacservicetech_07's Avatar
    hvacservicetech_07 Posts: 1,083, Reputation: 75
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    #2

    Oct 11, 2009, 11:43 PM

    I don't see any pictures attached. Depending on the age of the furnace there could be a low voltage fuse on the circuit board,it will be a 3amp auto blade fuse. If the furnace is older it may not have a fuse and you may have blown the transformer. I would double check your thermostat wiring before replacing anything.
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