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View Full Version : Trying to hook up a new Thermostat, quick wire Q


heylaady
Nov 11, 2008, 09:36 PM
Hey Guys! Im new here and I need your help, Im cold and would really appreciate your help, if you can! :)

Well about a week ago I was trying to turn my thermostat on because it started to get a bit chilly, but nothing happened, so I went in the basement and seen the pilot was out, so I turned it back on, thinking my problem was solved, I tried turning it on again... nothing happened, so I went to the scene of the crime and realized that my thermostat was pretty loose off the wall! I could even move it side to side! While doing that I suddenly heard the heat turn on! Well, try to turn on... for a mili-sec..
Anyway, It wasn't THAT cold yet, so I went to bed, not knowing that while I was sleeping, my boyfriend "became" an electrician, and took apart my whole thermostat! :mad:
Thinking of how he could fixed the problem, he went out and bought a new one... that was his resoluction to my broken heater :mad:

So now Im sitting here, trying to hook up the new one, and this is where you guys come in! :D

The model I have here is a Honeywell CT87K and wires I have to hook up from my wall are colored RED, WHITE, and BLUE, but my model asks for RED, WHITE, and YELLOW.
Do I hook up the blue to the yellow? Tape it off? Or what?

PLEASE! IM COLD!
Hope to hear from you soon!!
Thanks a heap ;)
-Sel
(an avid lurker on here)

hvac1000
Nov 11, 2008, 10:53 PM
The biggest problem is the blue wire. I have no idea where it goes or what it does in your system since a yellow wire is usually used. You can try to land the blue wire where the yellow should go but that can be a little risky. If you have the time go to the unit and see what letter the blue wire lands on. That will give us a better idea of what it is used for. Also the brand and exact model of unit the thermostat is controlling will also help.