As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CONTROLLER FOR CABIN ZONE TEMP ILLUMINATES ON RECALL. ACFT GROUNDED. BITE TEST NR 1 & NR 2 CONTROLLER. NR 2 CONTROLLER SHOWS "FLT DECK TRIM VALVE" FAULT. CLEARED FAULT. RAN BITE TWO MORE TIMES, OPS NORMAL. RAN BOTH PACKS ADJUSTING TEMP COLD TO HOT, OPS NORMAL REF FIM 21-61, TASK 861. GROUND VERIFICATION GOOD.