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I have a carrier A/C system controlled by a carrier TSTATCCBAC01-B non-programmable thermostat with 4 wires connected as follow: white-W, green-G, red-R and blue-Y which I want to replace with a Honeywell T8601D programmable thermostat that has the following terminals available; C, OT,OT,R,B,W,Y,O, and G. My problem is that when I connect the wires on the Honeywell to the same terminals as they were on the carrier the system seems to work but only the fan turns on while the commpressor stays off all the time. Someone told me that I needed a jumper wire so it'll give power to the compressor but couldn't tell me from what to where. What should I do or how do I need to make the connections? Thanks for your help.

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  • Ajax6969 Aug 14, 2008

    same problem here the wizard says to jumper r to Rc but THERE IS NO Rc!

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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chillmaster
  • 104 Answers

SOURCE: Manual Thermostat replcaement with Programmable Digital unit.

Hopefully there are markings on the old t-stat as to what terminal is what.
on the honeywell 8000 use the heat pump labeling and then the standard wiring would be
R- red
AUX-white
Y- yellow
B- O/B
C- black
G- green
There should not be a bare wire, it probably just has the insulation stripped back way too far.
You should probably open the furnace and compare the terminal label in the furnace to the wire color. normally yellow and blue pass through the furnace and are wire nutted to wires going to the outdoor unit. In the furnace the white wire will connect to the w or w1 terminal. also, you will need to set the Honeywell stat to have the following parameters.
170-7
190-1
200-0
other parameters that I did not specify, you may read the manual and make your own decision but I recommend factory settings for the other parameters

Posted on Jun 18, 2008

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  • 11 Answers

SOURCE: honeywell t8601d showing a square

There is a sensor that shuts the compressor down when the freon (refrigerant) is low. The tech probably "shorted" out this sensor. If the unit went on when he did this, the charge is low.

Posted on Jul 08, 2008

  • 306 Answers

SOURCE: I'm installing a Honeywell RTH7600B

Every thing the same except take your blue wire and replace the yellow for it. So when you hook it to t-stat goes like this

Red to R
White to W
Green to G
Blue to Y


Posted on Jan 16, 2009

pierre1811
  • 144 Answers

SOURCE: replacing thermostat: tstatccshp01 with th8320u1008

Hook up o to o/b, then in the installation programming set the change over valve to energize in cool. Then hook up w to aux. Good luck.

Posted on Jan 21, 2009

  • 2 Answers

SOURCE: Carrier Infinity Control Thermostat SYSTXCCUID01-B

Your old stat is wired for a traditional thermostat and not a communication stat like the new infinity you have. There is a module plug on the furnace board that will need to be connected to the new thermostat for it to work. The wires that are wired now are from a terminal strip inside the furnace. Please contact your local Carrier dealer. They may be able to get that harness for you

Posted on Jan 10, 2010

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