As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CONTROL ZONE TEMP OFF LIGHT ON. GOES OUT WITH MASTER CAUTION RESET. GROUNDED - YES. PERFORMED A/C TEMP CONTROLLER BITE CHECK PER CONTROLLER PLACARD, ONE FAULT, NR 2 TEMP CONTROLLER FLT DECK TRIM VLV. RAN CONTROLLER BITE & RESET, NO FAULTS NOTED. RAN NR 2 CONTROLLER BITE 2 MORE TIMES, NO FAULTS NOTED. NO HISTORY LAST 30 DAYS.