As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING RECALL AFTER STARTING ENGINES AIR COND MASTER CAUTION LIGHT REMAIN ILLUMINATED ALONG WITH CONT CAB ZONE TEMP LIGHT. RESETS WITH MASTER CAUTION RESET. BITE CKD BOTH CONTROLLERS NR 2 CONTROLLER FAULTED FLT DECK TRIM VALVE. REPLACED R2 COCKPIT ZONE TRIM MODULATING VALVE REF 21 61 21MM. OPS NORMAL FAULT REMOVED FROM NR 2 PRESS CONTROLLER.