As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
"CONT CAB" ZONE TEMP LIGHT ILLUMINATES ON RECALL AND EXTINGUISHES WITH MASTER CAUTION RESET. GROUNDED - YES. REMOVED AND REPLACED FLT DECK TCV REF B737-900 AMM 21-61-21-400-801, BITE TEST ON THE PACK/ZONE TEMP CONTROLLERS OK. LEAK CHECK OK. A/C RELEASED FROM MEL 21-21F.