As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE CREW REPORTED DURING CLIMB OUT, THE PRESSURIZATION WAS CLIMBING 3000 FT PER MINUTE. LEVELED AT 10000 FT CABIN WAS AT 8200FT. THE AIRCRAFT RETURNED TO DEPARTURE. MAINTENANCE INSPECTED AND REPLACED THE MANUAL PRESSURIZATION CONTROLLER, OPS CHECKED GOOD.