Below are the basic wiring diagrams for a thermostat on a standard air conditioning and heat pump HVAC systems. The wiring colors shown below are standard thermostat wiring colors. The original installer of your thermostat may not have used these colors.

Name:  AC.jpg
Views: 22233
Size:  28.5 KB

Name:  HP.jpg
Views: 25265
Size:  29.8 KB