As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
R PACK AUTO FAIL CAUTION MESSAGE AND R PACK TEMP CAUTION MESSAGE WHEN WE LANDED RAN QRH SMOKE SEEN AND SMELLED IN THE CABIN / REMOVED AND REPLACED TEMP CONTROL VALVE AND ACM IAW CRJ AMM 21-51-20-000/400-801 AND 21-51-08-000/400-801. OPS CHECK AND LEAK CHECK GOOD. MEL CLEAR AT THIS TIME.