As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER START RT PACK LIGHT ILLUMINATED ON RECALL. RESET WITH MC RECALL. GROUNDED, YES. REF B737-900 FIM 21-62 TASK 801, 21-62 TASK 831. NR 2 ZONE TEMP CONTROLLER SHOWS: TCV (THIS PACK). REQUIRES TCV (V141). REMOVED AND REPLACED ZONE 2 TEMPERATURE CONTROL VALVE (141), IAW B737-900 AMM 21-51-10. PERFORMED BITE TEST, PER B737-900 AMM 21-61-00. NO FAULT NOTED AND OPS CHECK GOOD.