As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LT WINDSHIELD HEAT INOP CAS MESSAGE ILLUMINATED ON START UP. FOLLOWED BY ACRID SMELL OF SOMETHING HEATING UP OR BURNING. REMOVED AND REPLACED LT. WINDSHIELD CONTROLLER. WINDSHIELD HEAT LT OPERATIONALLY CHECK'S GOOD. IAW: CE680 30-40-01.