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Honeywell rth230b
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 I would like to know if I can program my RTH230B thermostat from Fahrenheit to Celsius. Thank you Stan 
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 We just bought the RTH230B and cannot figure out the wiring. Our existing unit has 6 wires - Red, Green, Yellow, White, Orange and Blue. Please HELP me in wiring them to the 5 wire system of this thermostat. Thanks:confused: 
Honeywell RTH230B Wiring
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 I have an existing Honeywell non-programmable thermostat with 2 wires, a white and black. I 'd like to replace with the RTH230B programmable. After reading the Reader's Digest Do-it-Yourself book, it says I would need to add wires if I wanted to replace a non-programmable thermostat with a... 
Question of wiring Honeywell RTH230B thermostat
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Hi, I bought a Honeywell programmable thermostat to replace my old thermostat that controls both hotwater furnace and central AC. There are 5 wires now connected to the old thermostat, red, black, yellow , green and white. In my new Honeywell thermostat, there are also five slots as follow: Rh:... View more questions Search 
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