As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER START AND PUSHING RECALL RIGHT PACK LIGHT ILLUMINATES IT RESETS WITH MC RESET. GROUNDED - YES. ACCOMPLISHED PACK FLOW CONTROL TEMP CONTROLLER BITE CK # 1 CONTROLLER CK GOOD NO FAULTS. # 2 CONTROLLER SHOWED TCV ABLE TO RESET RAN BITE CK AGAIN NO FAULTS TEST PASS REF B737-900 AMM 21-61-00-740-801-002.