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airheatman
airheatman, HVAC Technician
Category: HVAC
Satisfied Customers: 7771
Experience:  Furnace, A/C and heat pump specialist.
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JUST INSTALLED HONEYWELL THERMOSTAT RTH3100C. AC WILL NOT

Customer Question

JUST INSTALLED HONEYWELL THERMOSTAT RTH3100C. AC WILL NOT COME ON. THE WIRING IS, Y R G AND W. DOES THE W WIRE GO INTO THE AUX?
JA: Just to clarify, do you think this is a larger HVAC problem, or something specific to the thermostat?
Customer: SETTINGS ON THE NEW THERMOSTAT.
JA: Do you plan on doing the work yourself?
Customer: HAVE INSTALLED AND WIRED MYSELF.
JA: Anything else we should know to help you best?
Customer: THE WIRE LABELED W BE INSERTED IN THE AUX?
Submitted: 2 months ago.
Category: HVAC
Expert:  airheatman replied 2 months ago.

This thermostat is not compatible with your system .It is a heat pump thermostat.You will need the Pro 3000 for your conventional system

Expert:  airheatman replied 2 months ago.

I will be glad to assist you with setting up or wiring if needed, but you have to first get a compatible )non heat pump thermostat.

The one you have will not work as it is a heat pump thermostat.