As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT PACK LIGHT ILLUMINATED ON RECALL AT TOP OF DESCENT. RESET WHEN M/C PUSHED. GROUNDED - YES. ACCOMPLISHED B737-800 FIM 21-62 TASK 801 #2 CONTROLLER FAULTED TCV THIS PACK ON BIT AND GREEN ON PREV FLT, ON VERIFY HARD FAULTED TCV. REMOVED AND REPLACED RH PACK TCV PER B737-800 AMM 21-51-10/401. INSTALL TEST PASSED.