Maintenance Completed Maintenance on a vertical furnace system. Checked all electrical components for proper volts and Amp. All components are within factory spec. System pressures and Temps are good. Tested furnace startup sequence. Furnace ignited with no errors and heated perfectly. Drain line clear. Installed homeowner supplied honeywell wifi thermostat. Assisted home owner in setup and tested. Thermostat is working properly. Uvc light is expired. Homeowner wants to replace on next visit. Left system operating normally.