Preventative maintenence inspection on Trane geothermal package unit. Trane Clean Effects pre filter cleaning. Other cells are in clean condition. Fan powered humidifier is operating properly. #35 humidifier pad in good condition. Adjusted water flow to minimize waste. Test ran system in electric strip heat and geothermal heating. All electric strips are operating properly. Geothermal heating is operating properly. Flow center is still full from last fill up.