As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ZONE TEMP CONTROL CABIN ON RECALL AND RESETS. GROUNDED - YES. BOTH ZONE TEMP CONTLRS LOGGED FLT DECK TRIM VALVE LAST LEG BUT TEST GOOD ON GND. REMOVED AND REPLACED CONTROL CABIN TRIM VALVE IAW B737-800 AMM 21-61-21-000-801, 21-61-21-400-801 LEAK CHECK AND OPS CHECK GOOD IAW B737-800 AMM 21-61-21-400-801, AND 21-61-00-700-806-002.