Arrived on site for maintenance. Customer stated no issues with unit as of late. Customer led me to the Attic. Checked out the filter, filter was pretty dirty. Checked out the evaporator coils and the evaporator pan everything was clean. Brushed out the p trap from the condensation pan. Turned down the temp on the thermostat to keep condenser running. Condenser outside was running fine. Disconnected condenser Washed down condenser. Plugged condenser back in. Checked out the pressures of condenser. Pressures were low, superheat was to high and subcooling to low, air handler has a piston as a metering device.
