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    c0r1nne's Avatar
    c0r1nne Posts: 3, Reputation: 1
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    #1

    Jun 28, 2008, 08:54 PM
    How do I match wiring when replacing a programmable thermostat?
    Had to replace the programmable thermostat. Instructions weren't clear to me as far as what jumper settings of on or off looked like.
    • Does "on" indicate placing the plastic piece over the jumper posts?

    I have 5 wires, White, Yellow, Red (which was connected to RH, then had a piece of wire connecting RC to RH), Green and Blue. The blue one wasn't connected to the old thermostat.
    I have Gas forced Air with heat and a separate AC unit that runs through the same vent system.
    Thanks for any help.
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Jun 28, 2008, 11:31 PM
    What thermostat?
    You did not tell us anything about the thermostat. Model/Name brand or should I get out my crystal ball and look around? LOL
    westnlas's Avatar
    westnlas Posts: 322, Reputation: 25
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    #3

    Jun 29, 2008, 01:16 AM
    Generally speaking, white is used as a common wire, green for fan, red for hot wire (hence the jumper between heat Rh and cool Rc), yellow for the condenser. On a combination unit like yours, I spliced the R to the condenser, bypassing the heat control board. This is done at the heater and not the t-stat. You will probably need to trace all the wires to get it wired in correctly. Maybe the manufacturer has an on-line tech support

    I did not use the blue wire.

    Incorrect wiring can damage the components. If you aren't sure, a tech might be the best way to go, unless hvac can walk you through it.

    Good luck
    c0r1nne's Avatar
    c0r1nne Posts: 3, Reputation: 1
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    #4

    Jun 29, 2008, 06:57 PM
    Sorry, new to the site. I went from an Indiglo 3599 to Ritetemp 6036.
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #5

    Jun 29, 2008, 10:56 PM
    Connect all wires exactly as before. You do not need to connect the blue.
    c0r1nne's Avatar
    c0r1nne Posts: 3, Reputation: 1
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    #6

    Jun 30, 2008, 05:03 PM
    Yep, that's what I did. Turns out there was a blown fuse on the furnace, coincidentally. Once that was replaced, all was well.
    Thanks.
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #7

    Jun 30, 2008, 05:22 PM
    Probably blew the fuse when wiring the stat. Glad you got it working.
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