As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
COCKPIT TEMP 84 AT FL370 TRIM VALVE FULL COLD INPUT AIR 92. TRIM VALVE AT 1 TICK INPUT AIR 88. PERFORM TEMP CONTROL TEST ON MCDU REF MM. REPLACED HOT AIR VALVE, OPS CHECK NORMAL. PERFORMED BITE TEST OF TEMP CTL SYS PER MM. NO BYPASS VALVE FAULTS NOTED.