As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON MASTER RECALL, FLT DECK CONT CAB ZONE TEMP LIGHT ILLUMINATES. ACCOMPLISHED QRH ITEMS AND CONT CAB ZONE TEMP LIGHT EXTINGUISHES UPON MASTER CAUTION SYSTEM RESET. GROUNDED - YES. REF B737-900 FIM 21-62 TASK 801 BITE CHECK #1 CONTROLLER SHOWED FLT DECK TRIM VALVE. CW FIM 21-62 TASK 833 FOR CONT CAB TRIM VALVE AFTER RESET OF CONTROLLER FAULT DID NOT RETURN. UNABLE TO RECALL ON SIX PACK OR CONTROLLER.