Completed maintenance on a heat pump split system. Checked all electrical components for proper volts and amp draw. All components are within factory spec. Back up heat tested ok. Cleared drain line. Found weak capacitor reading 20/1 of required 45/5. Replaced with a t200 cap with 5 year warranty. Found biogrowth in airhandler. Cleaned and sanitized the airhandler. Installed pure x uvc light system with lifetime equipment warranty and 3 year bulb replacement. Found low voltage wire insulation at condenser cracking. There is no bare wire showing. On the next maintenance this should be checked for any further deterioration. System is clean, sanitized, and operating properly at this time.