As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING START, THE RIGHT PACK LIGHT ILLUMINATED ON MASTER RECALL. CLEARED WITH RESET. ACFT GROUNDED. CONFIRMED THE FAULT, THE NR 2 PACK/ZONE TEMP CONTROLLER BITE FAILS TCV NR 2 (V141) . REMOVED & REPLACED THE NR 2 TCV, IAW AMM 21-51-10. GROUND FUNCTIONAL CHECK & LEAK CHECKED NORMAL, IAW AMM 21-61-00-700-806-002.