A:Answer With the assistance of their technical support, I was able to connect the thermostat to a heat pump in my condo. My 15 yr old unit did not have a control board but just a bunch of colored wires. They had me remove the PEK (was not required) and I wired the following wires to these connectors:
Left side: Red -> Rc, Green -> G, Yellow->Y1, Blue->O/B
Right Side: Brown->C, White->W1