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    getarbob's Avatar
    getarbob Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Jan 12, 2009, 07:47 PM
    Lost power
    My 4yr. Old Carrier heat pump shows no power to the thermostat therefore, nothing works. Checked the breakers and they show good. Could there be a circuit breaker on an internal board somewhere?
    ballengerb1's Avatar
    ballengerb1 Posts: 27,378, Reputation: 2280
    Home Repair & Remodeling Expert
    		  
    #2

    Jan 12, 2009, 07:49 PM

    Inspect your thermostat for a battery, might be a AAA or even one that looks like a quarter. Those quarter shaped batteries are usually 3 volts but look for a battery before trying anything else.
    KC13's Avatar
    KC13 Posts: 2,556, Reputation: 99
    Ultra Member
    		  
    #3

    Jan 12, 2009, 07:54 PM
    There is probably a low voltage fuse on the circuit board inside the indoor unit. It should look like an automotive-type fuse. Do not increase size.
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