As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LCH FLIGHT 2218 THE CREW REPORTED NR 2 PACK CREATED SMOKE IN THE CABIN. MAINTENANCE INSPECTED AND FOUND THE NR 2 HIGH STAGE VALVE WOULD NOT OPEN. THE HIGH STAGE BLEED VALVE AND THE PRESSURE SWITCH WERE REPLACED. OPERATIONAL CHECKS WERE GOOD.