What was found
FLT#2033, BOS-IAH. (AIRCRAFT PERFORMED AN AIR TURN BACK TO BOS) ' WING A/ ICE FAIL ON WING A/I TEST DURING CLIMB CAUTION MESSAGE DID NOT GO OUT I.A.W. ECL; PER FAULT CODE 3012F0015, FIM TASK BD500-A-J30-12-01-04AAA-421A-A, REMOVED AND REPLACED R-WING ANTI-ICE VALVE. REF DEFECT 3852312 FOR FUNCTIONAL CHECK, WIRING CHECKS ACCOMPLISHED AS WELL AND ALL CHECKS WERE NORMAL.'