As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAXI OUT MASTER CAUTION RECALL THE CONT CABIN ZONE TEMP LIGHT ILLUMINATED AND RESET WITH MASTER CAUTION PUSH REST. ACFT GROUNDED. ACCOMPLISHED PACK/ZONE TEMP CONTROLLER BITE, IAW AMM 21-61-00. FOUND NR 2 CONTROLLER FLT DECK TRIM VALVE FAULT. RESET FAULT. GROUND RAN BOTH PACKS FOR 1 HOUR. PERFORMED BITE AGAIN WITH NO FAULTS LOGGED. SYSTEM CHECKS NORMAL.