As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT PACK LIGHT ILLUMINATED ON RECALL. EXTINGUISHES ON RESET. GROUNDED - YES. PERFORMED BITE CHECK OF RIGHT HAND PACK/ZONE TEMP CONTROLLER. INITIAL BITE TEST SHOWED TCV FAULT, ABLE TO RESET, BITE TEST OPS NORMAL, REF B737-800 AMM 21-61-00.