As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PACK FLOW CONTROL VALVE LT ONE (BUT NOT BOTH) OF THE (2) LT PACK FLOW CONTROL VALVES (FCV) ARE NOT IN THE COMMANDED POSITION. STATUS MSG-2124001 LATCHED ER MODE MSG-2124001 LATCHED ER MODE. REPLACED LT LWR FLOW CONTROL VALVE. LT PACK CKS GOOD. NO FAULTS.