Returned to install Lennox S30 thermostat to replace white Icomfort thermostat that went blank. Wired in new smart hub. Wired in new thermostat base. Cycled system on. Ran system through modes. Homeowner did not want it set up to WiFi at this time. Instructed homeowner on how to use thermostat, also left her the thermostat user guide. System is operational upon departure.