As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT PACK LIGHT ILLUMINATED DURING RECALL CANCELS WITH MASTER CAUTION RESET. GROUNDED - YES. LEFT HAND PACK PRIMARY CONTROL INOP. ACCOMPLISHED ETOPS GROUND VERIFICATION TEST PER FIM 21-53 TASK 821 LEFT TCV FAULT RESET AND SUBSEQUENT OPS CHECK GOOD.