As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RT PACK LIGHT ILLUMINATES ON RECALL DOES NOT RESET LIGHT GOES OUT WITH MASTER CAUTION RESET. ACFT GROUNDED. UNABLE TO DUP/VERIFY DISCREP. UPON ARRIVAL, RT PACK LIGHT WILL NOT ILLUMINATE ON RECALL. AS REQUESTED, INTERROGATED BOTH TEMP CONTROLLERS - BIT, PREV FLT AN VERIFY TEST SHOWS NO FAULTS ON EITHER TEMP CONTROLLERS. R & R RT TCV REF AMM TASK 21-51-10, OPS CKD GOOD.