As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON MASTER CAUTION RECALL, "CONT CAB" ZONE TEMP LIGHT ILLUMINATES. EXTINGUISHES UPON PUSHING MASTER CAUTION LIGHT. GROUNDED - YES. PERFORMED RIGHT PACK TEMP CONTROL BITE TEST REF B737-900 FIM 21-62 TASK 801. PACK/ZN CON - R, FLT DECK TRIM VALVE RED LIGHT ILLUMINATED AFTER PUSHING THE BIT SWITCH AND PREV FLT SWITCH, THEN GREEN GO LIGHT ILLUMINATES AFTER PUSHING THE VERIFY SWITCH. PER FIM 21-62 TASK 832, NO FURTHER ACTION IS NECESSARY WHEN THE VERIFY AND GO LIGHTS ARE ON.