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View Full Version : Wiring diagram for a T874R1491


JMWEVH
Jun 14, 2010, 04:07 PM
I tried to switch it to a digital thermostate and it did not work correctly now the original thermostate is not cooling propely

hvac1000
Jun 14, 2010, 04:27 PM
http://customer.honeywell.com/techlit/pdf/69-0000s/69-0272.pdf

JMWEVH
Jun 14, 2010, 04:57 PM
How do you find which colors go to which?

hvac1000
Jun 14, 2010, 06:46 PM
You have to wire it up depending upon what type of system you have. When you know that just follow one of the wiring diagrams posted in the doc. You should have wrote down where the wires went on the old thermostat since that is what you are told in the instructions.

JMWEVH
Jun 16, 2010, 01:46 AM
Well no lesson learned, but thanks anyway I figured it out... I love how when people who know a lot about stuff and some one makes a rookie mistake you have to point out how stupid they where. If your computer breaks down hopefully you never need my help. I feel stupid enough already dude

hvac1000
Jun 16, 2010, 06:31 AM
Well no lesson learned, but thanks anyway I figured it out... I love how when people who know a lot about stuff and some one makes a rookie mistake you have to point out how stupid they where. If your computer breaks down hopefully you never need my help. I feel stupid enough already dude

I just state the facts exactly like they are. The brand and exact model number of the equipment was not posted so I have no idea how to wire your unit since it all depends upon that info. I write Microsoft C from years ago and have built all the computers in my network. I have been playing with computers since 1978 so if one does have a problem I am sure I can fix it or in today’s world just replace it with something quicker. It does not take a brain surgeon to wire a thermostat especially since I provided you with the complete instructions for your model number.

JMWEVH
Jun 17, 2010, 08:23 PM
Well thanks for your help truthfully I couldn't have done it without you thanks for the link and the advise, and it's very cool your so good with computers. Sorry I got a little smart just was really agravated but as I said lesson learned and all is well thanks to your help

hvac1000
Jun 18, 2010, 04:37 AM
Well thanks for your help truthfully I couldn't have done it without you thanks for the link and the advise, and it's very cool your so good with computers. Sorry I got a little smart just was really agravated but as I said lesson learned and all is well thanks to your help

Never bite the hand that feeds you. LOL. Glad you got it working.

JMWEVH
Jun 18, 2010, 07:52 PM
Just got too much going wrong in my life @ the moment ty again

hvac1000
Jun 19, 2010, 12:02 AM
just got to much going wrong in my life @ the moment ty again

Sometimes it is best to slow down and concentrate on one problem at a time. There are many problems out there and I believe we all share in them at one time or another.