As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAINT LIGHT ILLUMINATED ON OVHD. GROUNDED - YES. ON DEFERRAL. PERFORMED IFIM TASK 31-00-00-810-801. FOUND STATUS MESSAGES PACK TEMP CTRL PRIMARY R. ALSO FOUND FAULT CODE: 215 102 42, AND MAINTENANCE MESSAGE 21-55091. SEAMC STEVE NOTIFIED. OK TO RELEASE PER MEL 21-51-05A C/N 22107962