As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) BLEED VALVE WAS INSTALLED AFTER OVERHAUL TO REPLACE A TIME EXPIRED UNIT. SUBSEQUENT POWER CHECK REVEALED HIGH TOT. BLEED VALVE WAS WAS RETURNED TO VENDOR TO CORRECT FAULT. PART WAS INSTALLED AND FAILED A SECOND TIME. PART WAS REPLACED WITH ANOTHER UNIT, POWER CHECK SATISFACTORY.