18+ Honeywell Rth6500Wf Wiring Diagram. See the diagram below for what each wire controls on your system: Not all heating/cooling systems label the 24 vac common c.

If your old thermostat had separate o and b wires, attach the b wire to the c terminal. You will need to program the thermostat for heat pump with back up heat. There should be a supplied r joiner.
A Starting With The C Wire, Match The Sticky Tag On The Wire To The Terminal Labels.
Your new connection diagram is correct. Connect that wire to c and check that it is connected to the 24 vac common at your heating/cooling system. If you don’t have a c wire, try:
See The Diagram Below For What Each Wire Controls On Your System:
At its most basic, your thermostat connects terminals via internal relays to send power to these different. Many older mechanical or battery operated. • looking for an unused wire that is.
I'm Wiring A Rth6500Wf Thermostat.
Heat pump wiring help for honeywell rth6500wf. It provides a visual representation of the different wires and. If your old thermostat had separate o and b wires, attach the b wire to the c terminal.
The C, Or Common, Wire Brings 24 Vac Power To The Thermostat.
Connect that wire to c and check that it is connected to the 24 vac common at your heating/cooling system. Not all heating/cooling systems label the 24 vac common c. There should be a supplied r joiner.
If If Another Wire Is Attached To The C Terminal, Check Honeywellhome.com For Help.
Connect that wire to c and check that it is connected to the 24 vac common at your heating/cooling system. Thermostats do not require a c wire. Not all heating/cooling systems label the 24 vac common c.