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    opm8's Avatar
    opm8 Posts: 5, Reputation: 1
    New Member
    		  
    #1

    Aug 7, 2006, 01:36 PM
    Replaced thermostat - now no hear or a/c!
    My 15-yr old thermostat has weird programming quirks that I got tired of so I bought a new one and installed it. I made sure to follow the instructions to the letter and am quite sure that the wiring was correct.

    However, when I turned the breakers in my main house breaker panel back on neither the heat or air conditioning work, only room temperature air comes out of the furnace. There's a heat pump outside which doesn't turn on either (it used to turn on for a/c).

    I think it's a breaker problem because I put the old thermostat back in and still have the same problem. I can provide model numbers of everything if need be. Obviously I'm new to HVAC type stuff.

    --opm8
    jasv's Avatar
    jasv Posts: 35, Reputation: 2
    Junior Member
    		  
    #2

    Aug 7, 2006, 02:37 PM
    Often there is a fuse/breaker near the outside unit. Did you check to see if they were still good.
    opm8's Avatar
    opm8 Posts: 5, Reputation: 1
    New Member
    		  
    #3

    Aug 7, 2006, 05:52 PM
    Yes, there is a breaker which I turned off and on again and it didn't change anything. Also, one of the pipes from the heat pump outside is cold and the fan blades spin freely if I move them by hand. I switched the house breakers that control the heat pump and furnace off and on, too.

    Help!
    letmetellu's Avatar
    letmetellu Posts: 3,151, Reputation: 317
    Ultra Member
    		  
    #4

    Aug 7, 2006, 06:30 PM
    I don't understand how one of the pipes to you condensing unit is cold if it is not running. Is anything outside running. One other thing, heat pumps go through a defrost stage and sometime they even quit working.
    opm8's Avatar
    opm8 Posts: 5, Reputation: 1
    New Member
    		  
    #5

    Aug 7, 2006, 06:43 PM
    OK, so once more resetting all my breakers the heat pump has mysteriously started working and I have A/C again. I'm going to test if heat works and then I will be swapping out the old thermostat for the new one.

    I'll post an update when that's done, and in the meantime thanks for your help jasv and letmetellu.

    --opm8
    opm8's Avatar
    opm8 Posts: 5, Reputation: 1
    New Member
    		  
    #6

    Aug 12, 2006, 04:50 PM
    I reinstalled the new thermostat and all seems to work. Thanks for everyone's help.

    --opm8
    Allen4Val's Avatar
    Allen4Val Posts: 11, Reputation: 1
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    #7

    Nov 10, 2009, 05:35 PM
    This post is over 3 years old
    KC13's Avatar
    KC13 Posts: 2,556, Reputation: 99
    Ultra Member
    		  
    #8

    Nov 10, 2009, 06:00 PM
    And it still looks as good as the day it was new... ;)
    opm8's Avatar
    opm8 Posts: 5, Reputation: 1
    New Member
    		  
    #9

    Nov 10, 2009, 07:52 PM
    I'm here too :) Thermostat still working fine. Heat pump needed a new capacitor during this summer's heat wave, though.
    KC13's Avatar
    KC13 Posts: 2,556, Reputation: 99
    Ultra Member
    		  
    #10

    Nov 10, 2009, 08:04 PM
    Could be worse... imagine being told your capacitor needs a new heat pump... :confused:
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #11

    Nov 10, 2009, 09:25 PM
    That sounds expensive. LOL
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