As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
R/H PACK LIGHT ILLUMINATES ON RECALL AND RESETS WHEN MASTER CAUTION IS PUSHED. GROUNDED - YES. BITE TEST ON #2 CONTROLLER SHOWS ACTUATOR FAILURE. FAULT WILL NOT RESET. REMOVED AND REPLACED RAM AIR ACTUATOR #2 IAW B737-800 AMM 21-51-21. PERFORMED #2 PACK/ZONE TEMP CONTROLLER BITE IAW AMM 21-61-00. OPS CKS GOOD.