As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
1) CREW RECEIVED AMBER WING ANTI-ICE FAIL AND AMBER WING ANTI-ICE VALVE CLOSED MESSAGES DURING OPERATION IN ICING CONDITIONS 2) CREW RETURNED TO HOME BASE 3) MTN TROUBLESHOT RH ANTI-ICE VALVE 4) MTN DEFERRED PER MEL 30-10-01 5) MTN REMOVED LH & RH WING ANTI-ICE VALVES AND REPLACED WITH UPDATED, REPAIRED UNITS 6) OPS CHECKS GOOD.