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 MASTER CAUTION. EXTINGUISHED ON RESET. ACFT GROUNDED. ACCOMPLISHED A BITE CHECK ON THE NR 1 & 2 TEMP CONTROLLERS. NR 2 CONTROLLER SHOWS CONTROL CABIN TRIM VALVE FAULT. RESET THE NR 2 CONTROLLER, NO FAULTS NOTED. RAN BOTH PACKS ON GROUND FOR 20 MINUTES. CONTROL CABIN ZONE TEMP LIGHT REMAINS EXTINGUISHED. OK FOR SERVICE.