As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAXI, RIGHT PACK LIGHT ILLUMINATED ON RECALL, WILL NOT RESET. ACFT GROUNDED. BITE TEST OF RT PACK ZONE TEMP CONTROLLER FAULTS RT TCV. REF FIM 21-62, TASK 831. REPLACED RT PACK TEMP CONTROL VALVE REF AMM 21-51-10. NO LEAKS NOTED. PERFORMED PACK ZONE TEMP CONTROLLER BITE TEST REF AMM 21-61-00-700-806-002. NO FAULTS NOTED.