As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER ENGINE START ON RECALL, "MASTER CAUTION" ILLUMINATED AND "ZONE TEMP" ILLUMINATED ON CABIN CONTROL "CONT CAB". FOLLOWED QRH. MASTER CAUTION RESETS BUT TRIP RESET DOES NOT RESET. ACFT GROUNDED. VERIFIED NR 2 CONTROLLER SHOWS FLT DECK TRIM VALVE FAULT ON BIT/PREV. FLT TEST. REPLACED ZONE TRIM AIR MODULATING VALVE CONTROL CABIN IAW MM 21-61-21-000-801 AND 21-61-21-400-801. OPS CHECK GOOD.