As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN ALT WARNING. WOULD NOT PRESSURIZE. PERFORMED PRESSURIZATION OF AC SYSTEM WITH ENGINES IAW CRJ AMM 21-51-00, OPS CHECK OF BLEED AIR MANUAL CONTROL IAW CRJ AMM 36-10-00. PERFORMED PRESSURIZATION OF THE A/C IAW CRJ AMM 21-31-00. ALL OPS CHECKS GOOD AT THIS TIME.