As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING PUSHBACK, RECEIVED ZONE TEMP LIGHT ON CONT CAB LIGHT EXTINGUISHES DURING MASTER CAUTION RESET. GROUNDED - YES. PERFORMED PACK/ZONE TEMP CONTROLLER BITE TEST, REF AMM 21-61-00. FOUND FLIGHT DECK ZONE FAULT. PERFORMED VERIFY TEST. FAULT CLEARED, NO FAULTS SHOW ON EITHER CONTROLLER & VERIFY IS GOOD. ON RECALL FLT DECK ZONE LIGHT DOES NOT ILLUMINATE.