As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APPROXIMATELY 10 MINUTES AFTER DEPARTURE, DURING CLIMB, LT WING OVERHEAT ANNUNCIATOR ILLUMINATED. PILOT & CO-PILOT FOLLOWED EMERGENCY PROCEDURES & RETURNED TO DEPARTURE. AFTER ONE MINUTE WHILE ON APPROACH, THE LIGHT EXTINGUISHED. REPLACED THE 350 & 450 DEGREE SWITCHES & THE HOT AIR MIXING VALVE.