As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER START DURING MASTER CAUTION RECALL, THE LT PACK LIGHT ILLUMINATED ON THE AIR CONDITIONING PANEL. ACCOMPLISHED QRH. PACK LIGHT EXTINGUISHED AFTER MASTER CAUTION RESET. ACFT GROUNDED. BITE CHECK ON LEFT PACK/ZONE TEMP CONTROL REVEALED, TCV-THIS PACK, REF AMM 21-61-00. FAULT CLEARED AFTER RESET.