As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON RECALL, RIGHT HAND PACK LIGHT ILLUMINATED. GROUNDED - YES. NR 1 PACK/ZONE TEMP CTRLR SHOWS "CTRLR FAULT, STBY PACK" ON PREV FLT BITE. RESET FAULT. FAULT DID NOT RETURN. BITE TEST BOTH PACK/ZONE TEMP CTRLRS GOOD. REF AMM 21-51-00. FUNC CHECK NR 1 PACK GOOD.