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Old 10-12-2011, 12:09 AM   #1
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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.

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Old 10-12-2011, 12:21 AM   #2
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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


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Last edited by JJboy; 10-12-2011 at 12:29 AM.
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Old 10-12-2011, 06:19 PM   #3
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thermostat problems


What was the old stat and what did the existing wires connect to on that?
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Old 10-12-2011, 08:24 PM   #4
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thermostat problems


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.
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Old 10-12-2011, 10:35 PM   #5
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Maybe?:

http://highperformancehvac.com/hvac-...at-color-chart
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Old 10-13-2011, 12:16 AM   #6
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Quote:
Originally Posted by diyorpay
What if the original installer didn't follow the chart?
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Old 10-13-2011, 10:20 AM   #7
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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.
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Old 10-13-2011, 05:39 PM   #8
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thermostat problems


Quote:
Originally Posted by Patrick Eubanks View Post
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?
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Old 10-13-2011, 08:41 PM   #9
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thermostat problems


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.
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Old 10-13-2011, 08:48 PM   #10
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nevermind
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Last edited by hvactech126; 10-13-2011 at 08:51 PM.
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Old 10-14-2011, 09:45 AM   #11
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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

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