As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON RECALL GOT LEFT PACK LIGHT / LIGHT EXTINGUISHES WHEN RESET IS PRESSED. GROUNDED - YES. PERFORMED PFTC BITE REF B737-900 AMM 21-61-00-740-801. CONTROLLERS LEFT AND RIGHT LOGGED SEVERAL FAULT CODE 21-51265, 21-51267. REMOVED & REPLACED L/H TEMP CONTROL VLV REFB737-900 AMM 21-51-10. AFTER REPLACING VALVE, PERFORMED GROUND RUN OF LEFT AND RIGHT PACKS. ACCOMPLISHED BITE. NO ACTIVE FAULTS.