As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CONTROL CABIN ZONE TEMP AMBER LIGHT ILLUMINATES ON MASTER CAUTION RECALL AND EXTINGUISHES ON MASTER CAUTION SYSTEM RESET. GROUNDED - YES. NR 2 PACK ZONE TEMP CONTROLLER SHOWS FLT DECK TCV ON BIT & PREV FLT, GREEN GO FOR VERIFY, MSG RESET. RAN PACKS & RE-VERIFY BITE OPS NORMAL REF B737-900 AMM 21-61-00-700-806-002.