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Discussion Starter #1
My ac is working and the digital display and backlight is on but when I press the up and down arrows the temperature will not change it is staying on 78. I tried changing the battery and still have the problem. Central air conditioning in Florida.
 

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Discussion Starter #3
thermostat bought new oneHoneywell RTH6350

I am replacing the old Honeywell TH4110D and the wires connected are
W White
Y Yellow and white
G Green
O no wire
Rc red
R red with the Rc and R has jumper in
B and C no wire

Have bought a new Honeywell RTH6350D 5.2 day
These wires show a Y2, W2, G, W, Y, R and Rc
My question now is should I put wires the same as old with a yellow and white on the yellow or put one white on the W2.
 

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It really seems like you need a new thermostat because your current one can't detect temperature.. or change it.. hm..... at least I guess so.
 

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Discussion Starter #8
thermostat wiring

Thanks to all. Replaced it with the new Honeywell and attached wires same as old one. Everything seems to be working okay.
Thank you for all the help.
 
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