As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE CREW REPORTED THAT WHILE THE AUTO PRESSURIZATION SYSTEM WAS DEFERRED, THE MANUAL PRESSURIZATION SYSTEM WOULD NOT PRESSURIZE THE CABIN. THE CREW RETURNED TO FIELD AND LANDED WITHOUT INCIDENT. MAINTENANCE LOCKED OPEN BOTH OUTFLOW VALVES AND THE DEFERRAL WAS RECLASSIFIED. THE DEFERRAL WAS CLEARED ON 4/4/15 WHEN MAINTENANCE REPLACED THE DIGITAL PRESSURIZATION CONTROLLER. BOTH THE AUTO AND MANUAL PRESSURIZATION SYSTEMS CHECKED GOOD WITH NO FURTHER DEFECTS NOTED.