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I have an old Honeywell CT87A, hot water boiler baseboard
I have an old Honeywell CT87A, hot water boiler baseboard heat and 4 two wire zone valves. I want to replace and I bought Honeywell RTH2300/RTH221 stats. I can get the boiler and pump to turn on, howe… read more
Rick
Rick
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This is the first time. I am installing a Honeywell
I am installing a Honeywell thermostat RTH2300/RTH221… read more
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I just purchased a RTH2300/RTH221. In connecting, I have a wire "E" which is not mentioned in the directions or diagram. My system blows air, but we are not getting cold air. … read more
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I have S1 and S2 and not sure how to wire with new Honeywell
I have S1 and S2 and not sure how to wire with new Honeywell thermostat … read more
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I have a RTH2300/RTH221 series thermostat and want to
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I HAVE A HEAT AND COOL PUMP ALL ELECTRIC AND BAUGHT A
I HAVE A HEAT AND COOL PUMP ALL ELECTRIC AND BAUGHT A RTH2300/RTH221 USING THE WIRING ON PAGE 6 MY OLD THERMO HAD A ORANGE WIRE IN W1AND A WHITE WIRE IN W2,RED IN R, YELLOW IN Y1,BLUE IN C ,GREEN IN G… read more
BillyHvac
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We have a honeywell furnace that is not kicking on. we think
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gotoman for ac
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My thermostat #RTH2300/RTH221 series is makinga chirping
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Phil
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I replaced a non-programmable thermostat with a Honeywell
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airheatman
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I bought a RTH2300/RTH221 and installed it but whjen I try
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I am trying to replace a honeywell thermostat with a
i am trying to replace a honeywell thermostat with a honeywell RTH2300/RTH221. The problem is that i connected the BL to Blue, Red to the combo R-RC, W-to white and G-to Green. I checked the setup on … read more
Brian HVAC Guy
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Ijust bought a new thermostat RTH2300/RTH221 and my wires
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I have this thermostat that I installed a month or so ago.
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I just put in a new Honeywell thermast, hook every color to the right color, but when I turn on the ac, all I get is heat. What am I doing wrong?… read more
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I connected a honeywell rth2300/rth221 series thermostat a
I connected a honeywell rth2300/rth221 series thermostat a few months ago. Heat works great but now my AC doesn't come on. Setting set to cool and auto but the outside unit is not coming on.… read more
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I have a RTH2300/RTH221 series thermostat and want it to
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Comfort Specialist
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We changed the thermostat to a Honeywell RTH2300/RTH221 series
We changed the thermostat to a Honeywell RTH2300/RTH221 series Now nothing comes on Please help as its 100F here… read more
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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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