Rh stands for Red-Heat and Rc stands for Red-Cool. If you only have a single red wire the jumper between Rh and Rc are required for some heating and cooling hybrid systems depending on your thermostat. Yellow/Y is the AC compressor. White/W is the Heating element. Green/G runs the fan.
Find us at the office
Adolphe- Harpell street no. 33, 87771 Abuja, Nigeria
Give us a ring
+24 359 867 49
Mon - Fri, 9:00-15:00