Mr Cool Thermostat Wiring Diagram. Press the button at the top of the wired controller to remove the front panel and the. Hello, you can send any pics by attaching to this chat.
It “appears” according to the mr cool installation diagrams that my “communication” wire as they call it runs from the air handler to the outside unit. The electric strips are commonly attached to e for electric back up. The difference between 2 wire and 3 wire thermometer is the “g” or green wire that is usually used for fans.