As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER START CHECKLIST, WHEN RECALL CHECKED M/C LIGHT, AIR COND LIGHT AND RIGHT PACK LIGHT ILLUMINATED. RESET M/C LIGHT AND AIR CON LIGHT. RIGHT PACK LIGHT EXTINGUISHED. ACFT GROUNDED. . PERFORMED BITE OF PACK/ZONE TEMPERATURE CONTROLLER. NO CURRENT FAULTS AFTER TEST. RESET FAULT HISTORY IAW AMM 21-51-00.