What was found
DURING CLIMB, IN ICING CONDITIONS, EICAS DISPLAYED WING ANTI-ICE FAIL & WING PB OPEN INSCRIPTION DID NOT ILLUMINATE. IAW AOM 1 PROCEDURE SELECTED OVERRIDE TO ALL VLV SEEMED TO OPEN BUT BROKE OUT ON TOP & EXITED ICING CONDITIONS. KNOWING WE WOULD HAVE TO DESCENT THROUGH ICING CONDITIONS WE RAN ICE PROTECTION PNEUMATIC TEST IAW AOM 1 TO ASSURE SYS WAS FUNCTIONING DURING TEST, ALSO GOT WING ANTI-ICE FAIL M. PERFORMED OPERATIONAL TEST OF ANTI-ICE SYS IAW AMM 30-00-00. NO DEFECTS NOTED AT THIS TIME.