Theromostat wiring, NO AC and hot!!!! - http://www.hvacmechanic.com/ Forums
Original message
| chuck1971
 |  "Theromostat wiring, NO AC and hot!!!!"
, posted Fri 6 Jun 22:09  
I replaced my regular thermostat with with a Lux programable thermostat this winter. All worked well. Went to turn on the AC this week, and nothing (blower won't even kick). Since I replaced it in the winter, I don't remember what wires came from where on the old one, so I am not sure if the wiring is standard color scheme or not. I have just a gas furnace and central air. Here is a pic. Any ideas?\
My wires are G,W,Y,R,Black. Also a blue, orange and brown, probably not used
The thermostat has a G,Y,W, RC and RH connection
From all I can read, I should have G to G, Y to Y, W to W, and R to RC with a Jumper to RH.
Thanks for your help
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Replies:
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| chuck1971
| "Re(1):Theromostat wiring, NO AC and hot!!!!" , posted Sat 7 Jun 22:12:
OK, Picture didn't come out clear on the furnace thermostat connection point, easier to explain.
Standard looking bar terminal mount.
5 Connectors
R - Red wire
Y - Yellow wire
G - Green wire
W - White wire
C -Black wire
[this message was edited by chuck1971 on Sat 7 Jun 22:13] |
| | Houston204
| "Re(2):Theromostat wiring, NO AC and hot!!!!" , posted Sun 8 Jun 04:03
While I cannot rule out your budget brand stat as the problem, it appears that you have wired it correctly.
Will anything work now? Did you tape off the black (common) wire? If it shorts to the terminals in use, it can damage a fuse or transformer.
"Tip of the Day" Remember to remove power first.
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| | chuck1971
| "Re(3):Theromostat wiring, NO AC and hot!!!!" , posted Mon 16 Jun 21:53
I have been on vaca for a week, and just getting back to looking at this. So, if my wiring looked ok, any suggestions, or call a heating/coolong guy? How would I hook back up the original, Totaline p474-0100 digital stat? It has connection posts for R,G,Y1,W2,W1,Y2, AND C.
Thanks for the help.
Chuck
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| Houston204
| "Re(1):Theromostat wiring, NO AC and hot!!!!" , posted Fri 6 Jun 22:21
Pictures can be posted on this site using www.photobucket.com
upload your pictures left click the Letters IMG Code, right click and paste on your post.
Post the stat wire connections at your furnace.
The make and model number of your outdoor unit might help.
"Tip of the Day" Remember to remove power first.
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