What are the system setup options for the Honeywell thermostat?

The thermostat has several key setup numbers including temperature scale (125), heating system type (200), heating equipment type (205), reversing valve setting (218), cooling stages (220), heat stages (221), and system changeover mode (300). Each setup number has multiple configuration options to match your specific HVAC equipment. Access system setup by pressing and holding the Menu button for approximately 5 seconds from the home screen.