Before you begin to install your new thermostat turn the power off. The R wire provides 24 to 28 VAC to the thermostat and the thermostat then makes a connection and supplies 28VAC to the other wires to activate the fan, heat, and cooling. Some thermostat may have a feature called Emergency Heat where when set, it will shut off the heat pump. Check mobile apps for HVAC. Leave us a comment in the box below. Thanks for visiting.
For safety reason, always turn off air handler and outdoor units.
How to Wire a Thermostat | HVAC Control
Learning how to wire a thermostat or how to wire a heat pump thermostat is simply. Having three awesome instructors with three different ways of doing things. O — Orange wire This wire only applies to Heat Pump. In one of the videos they push the wire into the receptable with one finger, and tighten easily. Learning how to wire thermostat is simply and not all people see it that way. Thanks so much,. And if so, would it save me a headache to run a bundle with more wires in case I install an air conditioner in the future?