As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 516 IDA/LAS - FLIGHT CREW REPORT "L ICE PROTECT TEMP HIGH" ANNUNCIATOR ILLUMINATED WITH AIRFOIL ANTI-ICE ON. QRH PROCEDURE APPLIED AND LIGHT EXTINGUISHED. LAS VEGAS MAINTENANCE TROUBLESHOT THE SYSTEM TO A FAULTY LT TEMPERATURE SENSOR. REMOVED AND REPLACED TEMP SENSOR PER AMM 30-10-06. A SATISFACTORY OPERATIONAL CHECK WAS ACCOMPLISHED PER 30-10-00. THE AIRPLANE HAS RETURNED TO SERVICE.