As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
L PACK LIGHT ILLUMINATED -BOTH CHANNELS FAILED. GROUNDED - YES. FOUND LEFT PACK LIGHT ON RECALL GOES OUT ON RESET, SINGLE CHANNEL FAULT. #1 CONTROLLER LOGGED "THIS PACK TCV" FAULT. PERFORMED B737-900 FIM 21-53 TASK 821 BITE IS GOOD, FAULT CLEARED, NO CURRENT FAULTS. RAN LEFT PACK TEMP CONTROL NORMAL. GRD VERIFICATION SUCCESSFUL.