As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT PACK TEMP AUTO CONTOL INOP ( PACK TEMPERATURE CONTROL SYSTEMS (-200/-300) , AUTO MODE )(<P>T/S TO FAULTY LF PACK AUTO/MANUAL RELAY K57. REMOVED AND REPLACED RELAY 57 AS PER SWPM 20-81-22 AND SSM 21-50-03 AND PERFORMED OPS CHECK OF LF PACK COOLING SYSTEM PER 21-52-200 AND NO FAULTS NOTED. THIS ACTION CLEARS MDDR 152624</P>)