Thermostat installation, please help

Old 10-04-01, 01:38 PM
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Hi i want to replace my old thermostat with a new one. the new one that i got is a sears model no. 387 .911120. Can someone help me by telling me what wire to connect to what? on the thermostat there is 6 contectors and they say...6-six, MV, W, R, G, Y. can someone tell me what wire to connect to what? thanks for the help
Old 10-06-01, 04:46 AM
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ok i opened my thermostat and this is what i found. "o" goes to orange, "g" goes to green, "Y" goes to yellow, "X2" goes to black, "B" goes to blue, "W" goes to white, "T" goes to brown, and "R" goes to red. and the only thing on my new thermostat is "6-six", "MV", "W", "R", "G", "Y". can someone please help me.
Old 10-06-01, 02:47 PM
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sounds like you have a Heat Pump ,and didn't buy a Heat Pump T-stat. make sure you have the correct stat for your application, Good luck
Old 10-06-01, 03:56 PM
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yea i think i do have a heat pump. my old thermostat was a mercury one and had 8 things connected to it and the new one i got only had 6 so if i go to like home depot and ask for a heat pump thermostat, they would give me one that has 8 connection places? thanks
Old 10-07-01, 05:25 AM
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yes they shoul, let me know if you need help with the new one,
Good luck
Old 10-08-01, 07:48 PM
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It's also good to take the old t-stat with you to be sure you get a matching one. For future reference--- "O" = Orange = Reversing Valve = Heat Pump,if wired by Wiring Color Standard as it should be.Take Care, hope this helps.


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