As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CONT CAB ZONE TEMP ON WITH RECALL OFF WHEN RESET AFTER ENGINE START. GROUNDED - YES. ACCOMPLISHED ZONE TEMP CONTROLLER BITE CK # 1 CONTROLLER PASS NO FAULTS. # 2 CONTROLLER SHOW FLT DECK TRIM VALVE FAULT WAS ABLE TO RESET. RE-ACCOMPLISHED BITE CK ON # 2 CONTROLLER TEST PASS NO FAULTS. RAN BOTH PACKS NO CONT CAB LIGHT WITH MASTER CAUTION REF B737-900 AMM 21-61-00-700-806-002. NO HISTORY IN 30 DAYS.