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Carrier Infinity Control Thermostat SYSTXCCUID01-B

I'm finally replacing my old but expensiveHoneywell Thermostat for the Carrier Infinity Thermostat that matches my Carrier Infinity 96% Furnace Model 58MVP 120.

It should be a no-brainer - 4 wires to connect. I turned off the furnace circuit breaker (15 amps) and uninstalled the Honeywell and reinstalled the Carrier thermostat. Green wire to Green thermostat connection, Blue wire to Yellow connection, White to White etc, and Red to Red etc. The one concern was on the thermostat it has a yellow connection, rather than the blue wiring coming out of the furnace.

Is there some special way to "turn on" these carrier thermostats? The installation and setup documentation that came with the box doesn't mention anything specific, except that there is a System On/Off switch.

The problem is the display screen never lights up - it remains dark. I've depressed the On/Off switch. I've held the On/Off switch for 20 seconds - nothing. Down in the furnace room the light in the viewer in the bottom right of the furnace base is on and constant- no blinking. The fan appears to be cycling through and then shutting off.

What to I need to do to get this Carrier thermostat up and running?
20 amp service? Secret handshake?

Thanks for all your help.

Curt Fischer
Eden Prairie, MN

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  • 3 more comments 
  • Anonymous Dec 29, 2007

    The screen on my infinity thermostat(SYSTXCCUIDO1)went blank. The furnace still works and can be turned on or off from the control but that's about it. Do I need a new thermostat or can this one be fixed?





    thanks for your help

    JIM

  • Anonymous Apr 27, 2008

    CARRIER HEAT PUMP AND thermostat installed. PROBLEM WITH THERMOSTAT...TURNED OFF HEAT PUMP before I went to bed..HOW TO TURN BACK ON AND HOW TO WORK THERMOSTAT..



    ONLY INFO RECEIVED FROM INSTALLER IS SMALL BOOKLET.. "COMFORT..NON-PROGRAMMABLE OWNER'S MANUAL" ..Followed instruction in manual and they DO NOT WORK..(THIS BOOK DOES NOT EXACTLY MATCH MY THERMOSTAT)_... BOTH HAVE4 BUTTONS.. 2 ON EACH SIDE OF OF TEMPERATURE READING..TRIED OVER AND OVER..NO SUCCESS ENDED UP TURNING HEAT PUMP OFF. (the thermostat now reads 24-oc and lock figure appears...Never had problems with thermometers before this one...

    and this one is quite annoying.



    Gerri Petry

    cathylane@hemc.net

  • CUTTINOTIMOT Aug 14, 2008

    THERE IS 2 GUIDES TO THAT T STAT ONE FOR YOU AND ONE FOR THE INSTALL IF HE DOES DO HIS PART RIGHT YOU WILL NEVER BE ABLE 2 DO YOURS I DO THIS WOREK THAY WORK MAKE SURE THAY NO THERE PART LIKE LET THE T STAT NO WHAT ITS DOING AND WHAT IT IS VRUNING IF IT DOES NO IT WILL NEVER WORK RIGHT

  • Bob Stirling Dec 15, 2008

    Our infinity control thermostat has gone blank and we are concerned that the furnace & heat pump may not be functioning properly. We are soon leaving town on vacation and we're wanting to set the thermostat in vacation mode. Unable to now do that with a blank screen. How are we able to get the screen functioning again?

  • rwell Apr 29, 2009

    The display is blank and no indicator lights are on. the furnace does
    not turn on. The breaker is ok. This 1 of 5 units that have been in
    service 4 years.

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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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Hi
I have a Carrier split A/C Digital Thermostat. normaly it working but every day i saw the thermostat disply blinking PF.
Please advise me.
Thanks
Mehedi

Posted on Mar 18, 2008

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All connections at the furnace,t-stat and condensing unit have to be wired up to the 4-wire connector.Your honeywell was hooked up to the standard contoller connections.

Posted on Dec 27, 2007

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You need a ground or common to operate the digital display, so five wires are required. it will connect to the c terminal in the t stat and the c or 24v common connection on the furnace control board!

P Duffy

Knoxville, TN

Posted on Jun 12, 2008

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This is common for the cooling wire to be either blue or yellow. It is the same thing. You connected it right; the white to white (heat) green to green (fan) yellow to yellow or blue (cooling) and red is the 24v. Did you make sure there is a jumper from RC to RH? Usually the display on these digital thermostats is powered by a couple of batteries. Some use power from the 24v system. It will have a C connection on the thermostat and will need another wire from the low voltage board for this to work though. Check the installation instructions for this feature. On these thermostats, check the back of the first piece for a gas/electric pin is set for your system. Also the low voltage setting is right also.

Posted on Dec 07, 2007

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