As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER START PACK (L) LIGHT ILLUMINATED WOULD NOT RESET WITH MASTER CAUTION RESET. PERFORMED FIM TASK 21 62 00 810 830 BECAUSE OF TCV FAULT FOR LEFT PACK ON CONTROLLER BITE. REPLACED LT PACK TCV. TCV INSTALLATION TEST PASSED NO DUCT LEAKS FOUND. NO FAULTS ON CONTROLLER BITE. GROUND VERIFICATION TEST SUCCESSFUL. LT PACK TCV VERIFIED BY SEAMC.