As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT PACK TEMP CONTROLLER FAULTING RIGHT FLOW CONTROL VALVE. (PLACED IN COCKPIT) ATTEMPTED TO ACP HEALTH CHECK AMM 21-00-99, 601 BUT WAS UNABLE TO CLEAR MESSAGE. SWAPPED LEFT AND RIGHT TEMP CONTROLLERS AND MESSAGE SWAPPED. RETURNED CONTROLLERS TO ORIGINAL POSITIONS. WILL NEED NEW CONTROLLER MR 21656. REPLACED FLOW CONTROL VALVE PER MM. OPS CHECKS GOOD NO LEAKS NOTED. PACK FAULT MESSAGE CLEARED.