As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT 0950Z, FL200 NR 1 PACK TEMP EICAS MSG, ACCOMPLISHED QRH CHECKLIST THRU "L" PACK CONTROL SELECTOR OFF. PACK INOP LIGHT REMAINED ON DURING PROCEDURE. LEFT HAND PACK CONTROLLER / BITE TEST CARRIED OUT. LEFT RAM AIR INLET DOOR FAULT ANNUNCIATION. VERIFY AND RESET CARRIED OUT, MSG ERASED AND PACK GROUND OPS CHECK NORMAL IAW AMM 21-51-00.