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I own a non programmable digital thermostast RTH3100C THAT WAS INSTALLED AND KEPT MY AIR CONDITIONER COOLING WELL. HOWEVER, WHEN I TURN TO HEAT IT WOULD NOT HEAT THE PLACE. I JUST GOT COOL AIR. I WAS INFORMED BY YOUR CO. THAT THIS THERMOSTAT IS NOT FOR HEATING. I HAVE AN A/C WITH A PACKAGE OUTSIDE AND AN INSIDE AIR HANDLER WITH A HEAT ELEMENT. COULD IT BE LHAT IT WAS NOT PROPERLY WIRE. I ONLY HAVE THREE WIRES FROM THE OLD THERMOSTAT

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  • jidy1 Oct 30, 2008

    I found no w or w2 wires. only E AUX. Y G O L R B C I HAVE A HEATING UNIT IN AIR HANDLER.

    I DO NOT KNOW WHAT IS MEANT BY HEAT PUMP. I AM 88 YEARS OLD AND EXPECTED TO GET ALSO HEAT FROM THIS THERMOSTAT.

  • The HVAC Guy
    The HVAC Guy May 11, 2010

    this thermostat is for heating also. it is a heat pump thermostat. take the cover off. are there any wires installed on the w or w2 terminals? do you have a heat pump? 

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Are there any wires on the e or aux terminals. those are the terminals for heat

Posted on Oct 30, 2008

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Model: REG-123H
  • UPC: 855326002968
  • Product Type: 12,000 BTU Window Air Conditioner & Heater
  • Product Dimensions: L: 24.00" x W: 24.00" x H: 16.00"
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  • Product Color: White
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