Unit #1, the inverter system began operating on cooling after being reset. The charge was 12oz low but no leaks detected. I cycled the unit several times from test mode and from the thermostat and it’s op normal. The only fault code registered is blower limit, but all dipswitch settings are correct. If problem reoccurs a technician needs to come out when the6 can call tech support. Unit #2 was off at the outdoor unit because of multiple low pressure trips. I went into the attic and found the air handler was set for y1 only which is low cool. I jumpered y1 and y2 so that the blower will move twice the airflow and then checked the charge, unit operating normal. I called service manager to let them know what I had found and done.