As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) AFTER TAKEOFF, WHILE CLIMBING THROUGH 10,000 FT, CREW GOT LT PACK HIGH PRESS CAUTION MESSAGE. PRESSURIZATION WAS NOT BEING MAINTAINED.REPLACED THE RT ACM TO ENABLE THE RIGHT PACK TO BE SERVICEABLE. THE PACKS WERE OPERATED AND FOUND TO BE SERVICEABLE.