As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLE FLT 2411 THE CREW REPORTED THE AIRCRAFT WOULD NOT PRESSURIZE ON CLIMBOUT IN AUTO OR MANUAL. THE AIRCRAFT RETURNED TO CLE AND LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED AND REPLACED THE DIGITAL PRESSURIZATION CONTROLLER. OPERATIONAL CHECKS WERE GOOD.