As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT DECK TEMP CONT ZONE TEMP DURING RECALL. GROUNDED - YES. ACCOMPLISHED PACK TEMP CONTROLLER BITE TEST. #1 CONTROLLER TEST PASSED NO FAULTS NOTED. #2 CONTROLLER SHOW FLT DECK TRIM VALVE FAULT WAS ABLE TO RESET RAN BITE AGAIN NO FAULTS NOTED. NO ZONE TEMP DURING RECALL AFTER RUNNING BOTH PACKS REF B737-800 AMM 21-61-00-700-806-002.