Maintenance 1 Completed Maintenance on a heat pump split system. Checked all electrical components for proper volts and Amp draw. All components are within factory spec. Replaced warranty capacitor. Back up heater tested OK. Cleared drain line. System pressures and temperatures are correct. The system does not appear to have lost any refrigerant since our last visit. Found heavy bio growth in the air handler. I discussed uvc light and eac filter options. She will contact us when she would like to move forward.