As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER PUSHBACK, ZONE TEMP IN CONT CABIN DURING MASTER RECALL. EXTINGUISHES WHEN MASTER CAUTION SYSTEM IS RESET. GROUNDED - YES. FOUND #2 ZONE TEMP CONT LOGGED FLIGHT DECK TRIM VALVE FAULT, FAULT CLEARED AND OPS CKS NML PER B737-900 AMM 21-61-00. GND VERIFICATION SUCCESSFUL.