Rudd air handler installed in 2004 with Lennox heat pump installed in 2019. Customer complained of ac not coming on and heat only working on auxiliary heat. Tech discovered that the unit had high superheat with sub cooling in normal range. The evap coil is original r-22 coil with r-410 heat pump installed outside. Tech believes there to be a blockage in evap coil causing unusual superheat and subcooling numbers. Talked to customer about options. Customer refused repairs.