As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT PACK LIGHT ILLUMINATES ON DECENT RECALL. LIGHT GOES OUT WITH MASTER CAUTION RESET. ALL SYSTEM OPS NORMAL. GROUNDED - YES. PERFORMED PACK/ZONE TEMP CONTROLLER BITE REF B737-900 AMM 21-61-00 BITE CHECK OK. RAN PACKS AND LEFT PACK LIGHT REMAINED EXTINGUISHED.