When I arrive system was calling for cool checked all electrical components voltage amperage check drain clear drain line check outside unit I noticed dirty coils...I recommend to customer to get the coils clean today. customer refuse and will contact once ready. Today is no good. I recommend as soon as it’s a heat pump unit and it runs all year round. having dirty coils slow the performance of his pre-existing outdoor heat pump customer just replace furnace not too long ago and kept existing outdoor heat pump unit that needs servicing of dirty coils. I also gave other recommendations As well.