As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ETOPS SIGNIFICANT SYSTEM: FRM 216 224 00 PACK LIGHT COMES ON UNEXPECTEDLY DURING MASTER CAUTION RECALL. REMOVED AND REPLACED LEFT PACK TEMPERATURE CONTROL VALVE AS PER AMM 21-51-10. PERFORMED BITE TEST OF PACK/ ZONE TEMP CONTROLLER LIGHT COMES ON, BITE TEST OK.