As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT ZONE TEMP LIGHT ON RECALL, RESETS. ACFT GROUNDED. BITE CHECKED BOTH CONTROLLERS IAW FIM 21-62, TASK 801. NR 1 HARD FAULT AFT ZONE TRIM VALVE. REPLACED PASSENGERS AFT RT TRIM MOD VALVE REF AMM 21-61-21-400-801 & 21-61-21-400-801, OP'S & LEAK CHECK GOOD.