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 RECALL CHECK LIGHT RESET. GROUNDED - YES. PERFORMED PACK/ZONE TEMP CONTROLLER BITE TEST REF AMM 21-61-00. FOUND TRIM MODULATING VALVE AT FAULT. REMOVED AND REPLACED TRIM MODULATING VALVE REF AMM 21-61-21. PERFORMED OPS CHECK AND OPS CHECK GOOD. PERFORMED BITE CHECK AND NO FAULTS FOUND.