Learn how to use and troubleshoot the Honeywell T8775A and T8775C Digital Round Non-Programmable Thermostats. Control your heating and cooling systems effortlessly with user-friendly features such as a backlit display, system switch, and fan switch. No batteries required.
Learn how to install and operate the Honeywell T8775A, C Digital Round Non-Programmable Thermostat with our easy-to-follow instructions. This single-stage temperature control is suitable for 24V systems and comes with a thermostat, wallplate, mounting screws, wall anchors, and a 4074 FAB resistor. Ensure proper disposal of mercury-containing controls before replacing them with this model. Follow safety precautions during installation and avoid placing the thermostat near drafts, ducts, or radiant heat sources.