As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING MASTER CAUTION RECALL AFTER START ZONE TEMP (CONT CAB) ILLUMINATED. LIGHT EXTINGUISHED ON MASTER CAUTION RESET. ACFT GROUNDED. CHECKED CABIN TEMP CONTROLLERS FOR DEFECT ISOLATION. FOUND FLT DECK TRIM MOD VALVE FAULTED. COMPLETED VERIFY TEST REF MM 21-61-00, TEST PASSED FLIGHT DECK TEMP CONTROL, OPS NORMAL.