As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CONT CAB ZONE TEMP LIGHT ILLUMINATES ON RECALL. LIGHT EXTINGUISHES ON MASTER CAUTION SYSTEM RESET. GROUNDED - YES. ACCOMPLISHED BITE TEST ON LEFT AND RIGHT PACK ZONE TEMP CONTROLLERS PER B737-800 AMM 21-61-00. FAULT RESET. RAN PACKS FOR 30 MINUTES. NO FAULTS FOUND.