As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CONTROL CAB ZONE TEMP ILLUMINATED ON RECALL - GOES AWAY WHEN RESET. GROUNDED - YES. VERIFIED THAT THE "CONTROL CAB ZONE TEMP" LIGHT COMES ON WHEN ON RECALL. PERFORMED BITE CHECK OF THE PACK/ZONE TEMPERATURE CONTROLLER. CONTROLLER 2 SHOWS "FLT DECK TRIM VALVE" FAULT. ACCOMPLISHED "VERIFY" OPS CHECK AND IT CHECKS OKAY. "CONTROL CAB ZONE TEMP" LIGHT NO LONGER COMES ON WHEN ON RECALL. NO FURTHER ACTION REQUIRED PER B737-900 FIM 21-62- TASK 832.