As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE FLIGHT CREW REPORTED IN FLIGHT THAT THE LEFT SIDE COLD AMBER ANTI-ICE INDICATION WITH ALL ANTI-ICE ON INFLIGHT. THE MAINTENANCE VENDOR TROUBLESHOT AND DETERMINED THE LEFT HIGH PRESSURE SHUTOFF VALVE WAS DEFECTIVE. THE PROSV VALVE WAS REPLACED WITH A INSPECTED PRSOV. LEAK AND OPERATIONS CHECKS, SATISFACTORY. THE AIRCRAFT WAS RETURNED TO SERVICE.