As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB, GDC-MSP AT 3000 FEET, THE LEFT WINDSHIELD HEAT SYSTEM BEGAN ARCING. THE SYSTEM WAS SHUT OFF AT WHICH TIME THE WINDSHIELD CRACKED. THE AIRCRAFT RETURNED TO GDC WITHOUT FURTHER INCIDENT. REPLACED THE WINDSHIELD AND HEAT CONTROLLER.