As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ETOPS SIGNIFICANT SYSTEM, AIRCRAFT EXTREMELY HOT AT FULL COLD SETTING FOR PACKS WHILE ON GROUND DUCT PRESSURE IS 30 PSI SUSPECT PACKS AT OR PLUMBING SYSTEM GOOD AIRBORNE. T/S PER FIM 21-60-00, FOUND CABIN ZONE TEMP SENSOR FILTERS DIRTY CLEANED SAME, NO FAULTS ON ZONE TEMP CONTROLLER SYSTEM. OPS NORMAL