As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER PUSHBACK ON MASTER RECALL LEFT PACK LIGHT ILLUMINATED. GOES OUT ON PUSH TO RESET. BITE TEST ON LEFT CONTROLLER FAULTED LEFT TEMP CONTROL VALVE. RESET FAULT THEN BITE TEST GOOD. AS PRECAUTIONARY REPLACED LEFT TCV REF MM 21 51 10 000 801 AND 400 801. OPS AND LEAK CHECK NORMAL.