As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT ZONE TEMP ILLUMINATED RESET ON RECALL. COMPLETED QRH. ACFT GROUNDED. FAULT CHECKED NR 1 CONTROLLER TRIM VALVE. RESET CONTROLLER. NR 1 & NR 2 TEMP CONTROLLERS BITE CHECK NORMAL. RAN LT & RT AC PACKS FOR 10 MINUTES AT GATES. PACKS OPS CHECK NORMAL. BITE CK REF AMM 21-61-00-700-806-002.