As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GEG- ON FLIGHT 2345 WINDSHIELD HOT CAUTION LIGHT ILLUMINATED IN CRUISE TWO MINUTES AFTER SELECTING. RAN CHECKLIST, SWITCHED TO WARM-UP. AFTER 5 MINUTES CAUTION LIGHT ILLUMINATED AGAIN. REMOVED AND REPLACED ANTIICE CONTROLLER. OPERATIONAL CHECKS GOOD. AIRCRAFT RETURNED TO SERVICE.