As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT HAND PACK LIGHT ILLUMINATED ON RECALL. GROUNDED - YES. PERFORMED #1 PACK/ZONE TEMP CONTROL BITE TEST SHOWS TCV FAIL. REMOVED AND REPLACED #1 TEMP CONTROL VALVE REF B737-800 AMM 21-51-10. PERFORMED BITE CHK AND FAULT IS CLEARED. SUPPLIED PNEUMATIC PRESSURE TO SYSTEM, NO LEAKS DETECTED. THIS CLEARS MEL 21-32B C/N 22013517 SEAMC JARED NOTIFIED.