Question about Carrier Heating & Cooling

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In the cooling mode for zone 1, why won't the temperature stay as set on the cool setting?

I have a two zone Carrier comfort zone 11 thermostat controlling a section of our home. the temperture on the cool setting continues to cool to less than set on the thermostat. I have tried to reset the tempertures for both heat and cool but still will cool to cooler that set on the unit.

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  • Carrier Master
  • 2,410 Answers

Possibly 2 different scenarios, 1, your tstat is overshooting do to what is called temp droop. This means your tstat will allow the unit to overshoot temp set point to reach the desired humidity setpoint (typically a max of 3 degrees depending on the setting) or 2, the damper for that zone is not closing when set point reached.

If you need further help, reach me via phone at https://www.6ya.com/expert/thomas_092728000e6acb79

Posted on Feb 16, 2018

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  • Master
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If it 2 degree cooler then that's fine .adjust your thermostat 2 degrees higher so you will get the temperature

Posted on Feb 16, 2018

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6 Suggested Answers

6ya6ya

6ya staff

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Posted on Jan 02, 2017

the dr

joey shearer

  • 447 Answers

SOURCE: Carrier thermostat

I hate to say it but Ive had trouble with Carrier's Tstats doing similar improper things. Unfortunatly the only repair is going to be replacement of the whole tstat. I recommend Honeywell's FocusPRO or VisionPRO tstat. Ive yet to have one fail and they have a 5yr warranty if they ever do.

Posted on Nov 26, 2007

jumptrout51

steve

  • 3361 Answers

SOURCE: Carrier Comfort 13 Puron model 24ACA3 / FV4NB006

Verify 24 volts at the low voltage transformer inside the air handler. If it is OK, jump out the red/green and yellow thermostat wires. If everything comes on, replace the thermostat.

Posted on Jun 08, 2009

Anonymous

  • 38 Answers

SOURCE: Carrier Comfort Zone 2 flashing E2

the e2 error on your thermostat is a problem with the return temp sensor on your system, the only thing you can really do is call a company and replace it, you can't bypass it or remove it cause the system wont run properly

Posted on Jun 30, 2009

jerry bedell

  • 22 Answers

SOURCE: Carrier Comfort Zone II Smart Control in one zone

sounds like your zone control tstat needs calabrated or maybe replaced,in owners manual there should be a section on calibration if not you may have to replace it

Posted on Sep 15, 2009

little bulls

  • 22 Answers

SOURCE: Blank readings on Carrier Comfort 3 zone thermostat

The stat that works is called the main and the other two are called slave stats. The stats must be set to heat or cool the same as the main. If you want one room to cool and one to heat , sorry. Need to upgrade to auto changeover. Is this AC actally a Heat pump?

Posted on May 06, 2010

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1 Answer

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Sounds to me like a bad damper or a bad zone panel. Turn tstat off and call for cooling on zone 2. Then see if your still getting cool air to zone 1.( where the main tstat is)

If you need further help, reach me via phone at https://www.6ya.com/expert/thomas_092728000e6acb79

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To help understand the operation of a zone system, say you have 2 zone system and zone 1 thermostat initiates a heat or cool demand. Zone 2 valves energizes and shuts and zone 1 stays open and allow air to heat/ cool zone 1. If zone 2 thermostat simultaniously initiates the same heat/cool demand, the zone 2 valve opens and both zone heat/cool. When either thermostat is satisfied the opposite zone valve closes and when both thermostat are satisfied both zone valves open.
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