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Old 10-11-2011, 10:07 PM   #1
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Thermostat problems

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 10-11-2011, 10:26 PM   #2
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Thermostat problems

What were the wires on the old one labeled?

How were they connected?


Life is uncertain -- eat dessert first!!
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Old 10-11-2011, 10:30 PM   #3
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Thermostat problems

it was a one for one swap. the wires were the same. (or so i thought, now i am honestly at a total loss)
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Old 10-11-2011, 10:45 PM   #4
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Thermostat problems

Everyone here is happy to help. I suggest you put this in the HVAC section for help from people experienced with thermostat issues.
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Old 10-11-2011, 10:46 PM   #5
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Thermostat problems

Check connections at or inside your furnace. If it's gas fired your connections should be as follows:
R- R. 24v
W- W heating
G- G. Fan
Y- Y. A/C compressor
This is where you need to check at furnace connections. In my experience both blue and brown have been used as common as well as not used at all.
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