Performed after hour diagnostic on a Carrier Heatpump system. Found bad 45 amps fuse at air handler disconnect, replaced 45 amp fuse at no charge per management. Heat strip pulling 16 amps rated for 29 amps, Ecm blower motor pulling at 1.3 amps, all electrical connections are secured. Surge protector, Contactor, Hard Start kit is recommended to prevent future issues. Ran system for 45 mins with no issues at this time.