As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB, THE LEFT ICE PROTECTION TEMPERATURE HIGH LIGHT ILLUMINATED. FOLLOWED COCKPIT OPERATING MANUAL PROCEDURES AND LIGHT EXTINGUISHED. AIRCRAFT RETURNED TO MEM AND LANDED WITHOUT INCIDENT. REPLACED THE PNEUMATIC AUGMENTATION VALVE AND OPERATIONAL CHECK GOOD.