As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLIMBING THROUGH FL210, RECEIVED CABIN ALT CAUTION MESSAGE. BEGAN QRH, RECEIVED CABIN ALT WARNING MESSAGE. CW IAC/QRH, DIVERTED TO FWA. CABIN ALT INDICATION WAS RISING WHEN CATION MESSAGE WAS DISPLAYED. *****AIRCRAFT REMOVED FROM SERVICE******* DUE TO EXTENSIVE CABIN PRESSURE ISSUES AND SEVERAL CPAM FAIL MESSAGES WITH CPAM S/N 1524A ISNTALLED. R&R CPAP IAW AMM 21-23. OPS CHECK GOOD LEAK CHECK GOOD.