As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON RECALL, AFT CABIN ZONE TEMP LIGHT ILLUMINATED, RAN CHECKLIST. LIGHT WENT OUT WHEN MASTER CAUTION WAS PUSHED. ACFT GROUNDED. PERFORMED BIT TEST OF NR 1 AND NR 2 PACK/ZONE TEMP CONTROLLERS, CONTROL FAULT STANDBY PACK ILLUMINATED ON RECALL CONTROLLER NR 1 RESET FAULTS PERFORMED BIT TEST IAW AMM 21-51-00-700-803 NO FAULTS NOTED.