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Honeywell RTH230B
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 I currently have a very old thermostat, White-Rodgers 135-415, which I'd like to convert to a Honeywell RTH230B. Currently there are only 3 wires that are connected to the thermostat (which is only for my apartment's heat. White wire is connected to what looks to be labeled "Common" Black... 
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 This winter I installed honeywell rth230b. Heater works great, but I have no a/c. I have 6 wires from wall. Rh--red Rc--blue W--white Y--yellow G--green Brown not being used Help it is 90 deg. I need my a/c Thank you all 
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 I've read numerous threads on this model but could not find a solution. I just replaced my old thermostat with this model. The wiring on the old thermostat went as follows: Red - Rc jumped to Rh White - W Green - G Yellow - Y When I removed the old thermostat I noticed there was a blue... 
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 I am installing a Honeywell RTH230B thermostat but am not sure of the wiring. I have 6 wires colored as follows, red, green, white, yellow, and 2 blue wires. Please advise? 
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How do you get your red wire to fit in with the jumper? I can't seem to force wire in from top where the jumper is, even with the screw out all the way. Thanks, Barry View more questions Search 
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