As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT PACK LIGHT ILLUMINATED ON RECALL, EXTINGUISHES ON MASTER CAUTION RESET. ACFT GROUNDED. PERFORMED PACK ZONE TEMPERATURE CONTROLLER BITE IAW AMM 21-61-00-700-806-002, FAULTED LT PACK TEMPERATURE CONTROL VALVE (TCV). REMOVED LT PACK THE CONTROL VALVE IAW AMM 21-51-10-000-801. INSTALLED LT PACK CONTROL VALVE IAW AMM 21-51-10-400-801. PERFORMED INSTALLATION TEST IAW AMM 21-51-10-400-801 PARA E. INSTALLATION TESTED GOOD.