As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SMOKE IN COCKPIT. (CREW REPORTED SMOKE IN COCKPIT AND CABIN. NOXIOUS SMELL. APU ON, BOTH PACKS ON). INVESTIGATED LH PACK AND FOUND DAMAGE TO ACM AND TEMP CONTROL VALVE. REMOVED AND REPLACED TEMP CONTROL VALVE IAW CRJ 700 AMM 21-51-20-000/400-801.