As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING OUR T-O THE 2ND TIME, THE LEFT ENG BLEED VALVE DID NOT OPEN UNTIL 80KTS. SAMC TEXT: UNABLE TO GET LT ENGINE DEICE VALVE OPEN DURING DESCENT. HPSOV REACTIVATION DID NOT HELP. NO BLEED PRESS WITH ENG 1 ON IDLE. BITE SHOWS PRV AND PRC. PRV AND HPSOV SWAPPED FOR TROUBLESHOOTING, NO HELP. SAME SYMPTOMS. REPLACED NR 1 ENG PRV CONTROLLER. PERFORMED ENG RUN. ALL OPS AND IND NORMAL. ENG BLEED OPS NORMAL