Complete 2 System worked on both Systems. Main Unit 2 Zones, 1rst and 2nd Floor. Lennox 90% Gas Furnace: EPA Heating Maintenance: Checked tstat and air filter. Checked electrical connections. Checked blower motor amp draws. No CO detected. Burners are clean. Cleaned flame sensor. Checked all pressures hoses. Checked amparage on draft motor. All safety switches are on great condition. System is running great at this time. 3rd Floor Fijutsi Mini Split EPA Heating Maintenance: checked blower motor. Inspected evap coil. Checked air filter. Checked compressor amp draw and cfm. Checked pressures. Condenser is clean. System is running great st this time.