Upon my arrival in Elgin I did Heat-pump. I performed a 6 month checkup on 1 heat pump system. Flushed and treated the water removal system, washed the condenser coil with water, cleaned and treated the electrical cabinet with electrical insecticide, then verified the systems safety and performance. The comfort control was displaying it needed to be updated, I performed the update while on site updating it to the 4.47 version. System is operating within the manufacture specifications at this time.