As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE, LEFT PACK LIGHT ILLUMINATED WITH MASTER CAUTION RECALL. COMPLIED WITH QRH PROCEDURE AND LIGHT EXTINGUISHED INDICATING SINGLE CONTROLLER FAILURE. GROUNDED - YES. ACCOMPLISHED PACK/ZONE TEMPERATURE CONTROLLER BITE REF AMM 21-61-00 OPS CHECK NORMAL.