As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
COCKPIT TEMP LIGHT ON RECALL. RESETS NORMALLY. ACFT GROUNDED. PERFORMED PACK/ZONE TEMP CONT BITE TEST IAW AMM TASK 21-51-00-700-803. FOUND NR 1 PACK ZONE CONTROLLER FAULT ON BOTH BIT AND PREV FLT TEST. REPLACED NR 1 PACK ZONE TEMP CONTROLLER, OPS CKS GOOD IAW AMM 21-61-20-401.