As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER PUSHBACK RIGHT PACK LIGHT & ASSOCIATED AIRCON LIGHT ILLUMINATED ON RECALL AFTER ENGINE START. GROUNDED - YES. PERFORMED BITE TEST OF PACK ZONE TEMP CONTROLLER, FLAGGED TCV. REMOVED AND REPLACED RH TCV REF B737-800 AMM 21-51-10. BITE TEST AND PACK FLOW TEMP CONTROLLER TEST GOOD. NO LEAKS NOTED.