As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CONTROL CABIN ZONE TEMP LIGHT ILLUMINATED ON RECALL. EXTINGUISHES WHEN MASTER CAUTION SYS WAS RESET. ACFT GROUNDED. R & R TRIM MODULATING VALVE FOR FLIGHT DECK WITH A SERVICEABLE UNIT IN REF TO AMM 21-61-21/401. OPS CHECKS AND LEAK CHECK GOOD AT THIS TIME.