As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE FLIGHT CREW REPORTED THE LEFT ICE DETECT FAIL AND SIDE WINDOW HEAT EICAS MESSAGES POSTED. THE MAINTENANCE TEAM DETERMINED A LEFT ICE DETECTOR FAULT. THE DETECTOR WAS REMOVED AND REPLACED WITH A REPAIRED UNIT. OPS CHECKS WERE SATISFACTORY AND THE AIRCRAFT WAS RETURNED TO SERVICED.