As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) ON CLIMB OUT OF MEMPHIS THE CREW WERE UNABLE TO PRESSURIZE THE AIRCRAFT USING EITHER AUTO OR MANUAL MODES. MAINTENANCE FOUND THE OVERHEAD PRESSURIZATION CONTROL PANEL TO BE DEFECTIVE. A NEW PRESSURIZATION CONTROL PANEL WAS INSTALLED AND THE AIRCRAFT RETURNED TO SERVICE.