As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT PACK ILLUMINATED ON MASTER CAUTION RECALL EXTINGUISHES WHEN PRESSING MASTER CAUTION RESET. GROUNDED - YES. PERFORMED PACK/ZONE TEMPERATURE CONTROLLER BITE TEST ON BOTH CONTROLLERS REF. B737-800 AMM 21-51-00-700-803. OPS. NORMAL. NO FAULTS NOTED.