Question about Honeywell Focus 6300B 5-2 Days Programmable Thermostat Heater

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New rth2310 themostat does not blow cool air

My husband installed this new thermostat and only heated air comes out even when it is set to cool.

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  • tikitank89 Apr 22, 2009

    No. The new one only uses 4. (R,G,Y,W) The old one (LUXPRO)has 7. (r,G,Y,W,O,E,B) I put the old one back one and it works perfectly. Can't figure out which wires to use on the new Honeywell.

  • Samuel Charles Spriggs May 11, 2010

    Sounds like it's just wired incorrectly or it's the wrong thermostat. Is the new thermostat designed for the same number of wires as the old one?

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  • Master
  • 1,489 Answers

I don't believe you're going to get the new one to work -- sounds like it doesn't have enough control wires to operate your HVAC system. If it is designed to operate a 7-wire system, the documentation should show how to hook the 4-wire tstat so it will work.

Posted on Apr 22, 2009

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