Tstat help with Central AC


Old 05-26-18, 08:21 PM
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Tstat help with Central AC

Hi guys,
I'm hoping you can help. I have some funky stuff going on with the wires to my new TStat
-I replaced the original.
-last winter I had issues getting the heat to work and I was able to play with the wires and terminals to get heat
-Summer is here and now the Central AC doesn't work.
-I think I moved a wire in the wrong place but I have no Idea which ones
-I have isolated the wires for the heat by jumping them a Red and White
-I have also isolated another red wire that when I jump it to blue the fan kicks on to make sure that works (it is a new condenser as well and worked all last year.
-Can you advise what terminals these should be going to on the Tstat so it works?

Honeywell 6500
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Old 05-26-18, 09:53 PM
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quick update. I found out connected a red wire to the Y it kicks on the fan but I don't think the compressor is going on.
Old 05-27-18, 04:41 AM
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We may be able to offer better assistance if you post some pictures of the low voltage connections at the stat, furnace and outdoor unit.

The make and model of these units would also be of assistance.
Old 05-27-18, 09:03 PM
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In addition to what Houston requested...... it sounds like you have a separate heating system from your A/C system. You need to be very careful just shorting wires together. If you do have two systems it would be very easy to burn up a transformer.

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