Replace thermostat

Wiring explained

the Red wire is 28v
the Green wire is Indoor fan
the Yellow wire is Compressor
the White wire is Heat
the Orange wire is the SOV (switch over valve) for heat pumps
the Black wire is Emergency or Secondary Heat " " "

To hot wire:

Jumper what you want to happen to the Red wire. e.g.

Red to Green and Yellow for normal air-conditioner to run.