As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AMBER CAS MESSAGE "PITOT HEAT FAIL-L" ILLUMINATED IN FLIGHT. ON THE GROUND, THE LEFT PITOT TUBE WAS COLD AND THE RIGHT ONE WAS HOT. REMOVED AND REPLACED PITOT TUBE WITH NEW UNIT. LEAK AND OPERATIONAL CHECK GOOD. WORK DONE IAW CESSNA 750 MAINTENANCE MANUAL 30-30-00.