As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT PACK LIGHT ILLUMINATES DURING RECALL. COMPLIED WITH QRH PROCEDURE AND LIGHT EXTINGUISHES WITH MASTER CAUTION RESET. GROUNDED - YES. RELEASED PER MEL 21-32B. LEFT HAND PACK TEMPERATURE CONTROL INOP. CONFIRMED FAULT, L/H PFTC BITE TEST SHOWS HARD FAIL TCV 1 (V139) MSG# 21-51267. GVI TCV 1 SHOWS OVERHEATING. REMOVED & REPLACED TCV 1 REF B737-900 AMM 21-51-10, LK CK & OPS CK NML REF AMM 21-61-00-740-801-002. R/H PFTC SHOWS NO FAULT. AIRCRAFT RELEASED FROM MEL 21-32B.