Ac start up. Checked disconnect. Checked high voltage wiring to condenser. Checked low voltage two wire to unit. Hooked up gauges. Found system charge was dropped due to ambient temps and pressures. Found valves open. Checked two wire in furnace, ok. Checked filter, ok. Cycled system. Checked pressures and temps. Subcooling was 11 with outdoor temp at 58. Split was 17. System has correct charge, but would like to verify and fine tune when temps are higher and there is a heat load in home. System is operating at this time. Job complete.