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    jmoppa1's Avatar
    jmoppa1 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Nov 19, 2010, 10:03 PM
    2 wire thermostat
    OK, just bought a Honeywell RTH2300 to replace an older thermostat in my house. Only 2 wire, so single stage gas/steam furnace. 2 wires coming in, green and red, which I hooked to green and red on thermostat. Well, furnace only fires when I switch the fan switch from auto to on. Near the breaker, the wires are labeled coming out: gas burner with the green wire and thermostat with the red wire.

    Help!
    Joshdta's Avatar
    Joshdta Posts: 2,549, Reputation: 45
    Ultra Member
    		  
    #2

    Nov 20, 2010, 06:22 AM

    Red to r
    Green to w
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