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Phil
Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 6022
Experience:  Retired HVAC/ Electrical & Boiler contractor. Industrial
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I uninstalled a thermostat and labeled wires as they were

Customer Question

thanks. I uninstalled a white rogers thermostat and labeled wires as they were unconnected. I have G - Green R - red , Y - yellow, w--white, w2 - brown, c - blue I purchased a Hunter 44157 and doesn't match codes
JA: Just to clarify, do you think this is a larger HVAC problem, or something specific to the thermostat?
Customer: thermostat
JA: Do you plan on doing the work yourself?
Customer: yes
JA: Anything else we should know to help you best?
Customer: where does W2 go, and I think C does not get connected. Correct?
Submitted: 10 months ago.
Category: HVAC
Expert:  Rick replied 10 months ago.

Welcome to Just Answer, my name is ***** ***** I will do my best to help you with your issue. If my initial response doesn’t answer your question then let me know and we can continue our conversation.

It sounds like you can't use the Hunter you bought. A W2 lead indicates you have a 2 stage furnace. Since the Hunter has no W2 terminal it is made for only a single stage unit.