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New Member
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Aug 7, 2006, 01:36 PM
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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
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Junior Member
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Aug 7, 2006, 02:37 PM
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Often there is a fuse/breaker near the outside unit. Did you check to see if they were still good.
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New Member
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Aug 7, 2006, 05:52 PM
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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!
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Ultra Member
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Aug 7, 2006, 06:30 PM
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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.
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New Member
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Aug 7, 2006, 06:43 PM
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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
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New Member
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Aug 12, 2006, 04:50 PM
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I reinstalled the new thermostat and all seems to work. Thanks for everyone's help.
--opm8
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New Member
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Nov 10, 2009, 05:35 PM
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This post is over 3 years old
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Ultra Member
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Nov 10, 2009, 06:00 PM
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And it still looks as good as the day it was new... ;)
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New Member
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Nov 10, 2009, 07:52 PM
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I'm here too :) Thermostat still working fine. Heat pump needed a new capacitor during this summer's heat wave, though.
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Ultra Member
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Nov 10, 2009, 08:04 PM
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Could be worse... imagine being told your capacitor needs a new heat pump... :confused:
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Heating & Air Conditioning Expert
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Nov 10, 2009, 09:25 PM
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That sounds expensive. LOL
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