Old Honeywell Heat Only Thermostat Wiring Diagram. There are just two things that will be present in any honeywell thermostat wiring diagram 3 wire. 3 does the th1100dvth1110dvth1210dv thermostat work with heat pumps with auxiliarybackup.
Print the cabling diagram off and use highlighters to trace the signal. Honeywell home rth221b1039 1 week programmable thermostat for heat and cool. No this thermostat display stopped working so now i purchased new honeywell thermostat rth9585wf has 5 wired connection mentioned with c wire requested connectionin the new set up do i need to connect blue wire not connected previously to c common point or ggreenwire existing to c common section.
Label wires and remove your old thermostat see pages.
Position the auxiliary heat is activated on a call for heat. Non programmable thermostat rth 1 if any wires are not attached to your old thermostat or are attached to a terminal designation see diagram below. October 2 2020 by faceitsalon. Before you start any diy electrical wiring project its essential that you have the right ingenuity as well as the right tools and materials for the job.