As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER ENGINE START CONTROL CABIN "ZONE TEMP" LIGHT ON. GOES OUT WITH MC RESET. GROUNDED - YES. (RESOLVED ON W/O: 1894001 TASKCARD: N/R-00001 ) REMOVED & REPLACED FLT DECK TRIM AIR VLV LK & OPS NORMAL REF B737-900 AMM 21-61-21. ACCOMP PZTC BITE CK NO FAULTS FOUND REF AMM 21-61-00. ACFT RELEASED FROM MEL 21-21G C/N# 04048409 REMOVED SEAMC TODD NOTIFIED.