As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT HAND PACK ILLUNATES ON RECALL & EXTINGUISHES WITH MASTER CAUTION RESET. GROUNDED - YES. PERFORMED PACK TEMP CONTROL BITE. REF B737-800 FIM 21-62 TASK 801. BIT AND PREV FLIGHT SHOW RIGHT PACK TCV FAULT. FAULT RESETS ON VERIFY. REMOVED & REPLACED RIGHT TEMP CONTROL VALVE. OPS CHECK GOOD REF B737-800 AMM 21-51-10.