Question about Honeywell CT87B ROUND HEATING&COOLING MECHANICAL THERMOSTAT - WHITE Heater

1 Answer

Cold air will not turn on

I installed the white round honeywell thermostat this last winter, and the heat immediately turned on. Now it's summer, and I tried turning on the cold air for the first time and nothing is happening. Any ideas?? thanks, ultra

Posted by Andrew Vititoe on

  • 2 more comments 
  • Anonymous May 06, 2008

    Im having the same problem I installed a therostat ct87n4450 heat works but no air. I have 4 wires YGWR. Any help?

  • nicknamedog May 19, 2008

    honeywell non programable stat air does not work heat works but not air

    wires coming through the wall are g,r,w,b model # CT87N4450

  • woody11 Jun 23, 2008

    honeywell non programable stat air does not work heat works but not air wires coming through the wall are g,r,w,b model # CT87N4450

  • merie Nov 21, 2008

    Im having the same problem I installed a therostat ct87n4450 heat works but no air. I have 4 wires YGWR. Any help?

    Has anyone answered this. My fan will come on if set at about 80.

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Anonymous

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  • 23 Answers

Check your wireing make sure that you dont have the red wire touching the white

Posted on Jan 08, 2010

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