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, EXTINGUISHED WITH M/C RESET. ACFT GROUNDED. ACCOMPLISHED PACK TEMP CONTROL BITE IAW FIM 21-61 TASK 801. LAST FLIGHT SHOWS TRIM VALVE FAULT. VERIFY SHOWS NO CURRENT FAULTS. RESET, CONTROL CABIN TEMP OPS NORMAL. GROUND VERIFICATION ACCOMPLISHED.