thermostat problems

irish_father · 10-12-2011, 12:09 AM

following the advice of another member, i am posting this here as well as in electrical.

recently i upgraded (or rather tried to upgrade) to a new thermostat, i followed the directions and replaced wire for wire. simple i thought, WRONG...i can't get the heat or A/C to operate and the only thing that does work is the blower fan. existing wires are Red, Blue, Brown, Green, White, and Yellow. i have tried various combinations and have fallen way short of achieving success. i humbly ask for help.
the thermostat i am trying to use is a Hunter model #44660, A/C is a Carrier (unsure of age), furnace is also a Carrier (electric pilot light).

any and all help is greatly appreciated.

JJboy · 10-12-2011, 12:21 AM

First you have to check that the wires colors are connected at the right place on the control board. After that you just need to following the thermostat manual.

Red ( 24vac ) - R
White ( call for heat ) - W or W1
Green ( Fan On ) - G
Yellow ( call for cool ) - Y
Orange - O/B

These are the basics

REP · 10-12-2011, 06:19 PM

What was the old stat and what did the existing wires connect to on that?

Master of Cold · 10-12-2011, 08:24 PM

We don't use the brown much in the field. Like JJ was saying, look at the control board and see what color wires are attached to the terminals. The terminals on the control board will be the same designations as what is on the thermostat.

diyorpay · 10-12-2011, 10:35 PM

Maybe?:

http://highperformancehvac.com/hvac-...at-color-chart

Master of Cold · 10-13-2011, 12:16 AM

Quote:

Originally Posted by diyorpay

Maybe?:

http://highperformancehvac.com/hvac-...at-color-chart

What if the original installer didn't follow the chart?

Patrick Eubanks · 10-13-2011, 10:20 AM

first problem is your putting a hunter thermostat on a carrier. That shoud be against the law.
Your brown should be your common or c terminal but it could also be the reversing valve since you dont have an orange wire. If it is indeed common it will eliminate the need for batteries.
Rewire it as you removed the wires as not to get confused when you discover whats actually the problem.
Why change t-stat? Was it working prior to the change? Make sure you have a heat pump t-stat and not conventional.

hvactech126 · 10-13-2011, 05:39 PM

Quote:

Originally Posted by Patrick Eubanks

first problem is your putting a hunter thermostat on a carrier. That shoud be against the law.
Your brown should be your common or c terminal but it could also be the reversing valve since you dont have an orange wire. If it is indeed common it will eliminate the need for batteries.
Rewire it as you removed the wires as not to get confused when you discover whats actually the problem.
Why change t-stat? Was it working prior to the change? Make sure you have a heat pump t-stat and not conventional.

Where did the OP say they had a heat pump?

Master of Cold · 10-13-2011, 08:41 PM

Heat pump was assumed due to the fact of having 6 wires at the stat. What we are probably looking at is 2 stage heat.

hvactech126 · 10-13-2011, 08:48 PM

nevermind

Patrick Eubanks · 10-14-2011, 09:45 AM

after reading the initial post I this it is conventional but I stick with my origingal statement about the t-stat. Stick with the old stat

10-12-2011, 12:09 AM	#1
irish_father Newbie Join Date: Oct 2011 Posts: 3	thermostat problems following the advice of another member, i am posting this here as well as in electrical. recently i upgraded (or rather tried to upgrade) to a new thermostat, i followed the directions and replaced wire for wire. simple i thought, WRONG...i can't get the heat or A/C to operate and the only thing that does work is the blower fan. existing wires are Red, Blue, Brown, Green, White, and Yellow. i have tried various combinations and have fallen way short of achieving success. i humbly ask for help. the thermostat i am trying to use is a Hunter model #44660, A/C is a Carrier (unsure of age), furnace is also a Carrier (electric pilot light). any and all help is greatly appreciated.

10-12-2011, 12:21 AM	#2
JJboy Member Join Date: Oct 2010 Location: Austin - Texas Posts: 1,402	thermostat problems First you have to check that the wires colors are connected at the right place on the control board. After that you just need to following the thermostat manual. Red ( 24vac ) - R White ( call for heat ) - W or W1 Green ( Fan On ) - G Yellow ( call for cool ) - Y Orange - O/B These are the basics __________________ Always kill the power Hot air rises, but heat will always move from higher to lower temperatures. Real man shoot in manual. If it ain't grounded, it ain't dead. Last edited by JJboy; 10-12-2011 at 12:29 AM.

10-12-2011, 06:19 PM	#3
REP Member Join Date: Jul 2011 Posts: 613	thermostat problems What was the old stat and what did the existing wires connect to on that?

10-12-2011, 10:35 PM	#5
diyorpay Member Join Date: Sep 2010 Posts: 440	thermostat problems Maybe?: http://highperformancehvac.com/hvac-...at-color-chart

10-13-2011, 10:20 AM	#7
Patrick Eubanks Member Join Date: Oct 2011 Posts: 104	thermostat problems first problem is your putting a hunter thermostat on a carrier. That shoud be against the law. Your brown should be your common or c terminal but it could also be the reversing valve since you dont have an orange wire. If it is indeed common it will eliminate the need for batteries. Rewire it as you removed the wires as not to get confused when you discover whats actually the problem. Why change t-stat? Was it working prior to the change? Make sure you have a heat pump t-stat and not conventional.

thermostat problems