Performed gold cooling maintenance Filter new Blower clean Drain clear Only getting 12.5⁰ delta T across evaporator coil Pulled coil door off, no signs of freezing Top half of the coil is dry Connected refrigerant probes to outdoor unit Charge specification is 10⁰ +/-3⁰ for liquid line subcooling Getting 9⁰ subcool, charge level is correct Suction pressure is a little low Superheat is very high @32⁰... should be more like 10⁰ Expansion valve needs replaced under factory parts warranty Checked all wiring Capacitor tested at rated specification Everything else with the system is in good shape
