As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CONT CABIN "ZONE TEMP" LIGHT ILLUMINATED WITH MASTER CAUTION RECALL - GOES OUT WITH RESET. GROUNDED - YES. ACCOMPLISHED PZTC BITE REF B737-900 FIM 21-62 TASK 801 NO FAULTS #1, #2 PZTC ON BIT AND PREV FLT LOGGED FLT DECK TRIM VALVE WITH A GREEN ON GO, RAN PACKS AND REACCOMPLISHED PZTC BITE WITH NO FAULTS LOGGED.