What was found
(CAN) THE CREW REPORTED A LOSS OF POWER ON THE RT ENGINE DURING CLIMB. THEY RETARDED THE THROTTLE WHICH RESULTED IN ENGINE POWER BEING HELD AT IDLE AND NOT RESPONDING TO THROTTLE LEVER ADVANCEMENT. NO CAS MESSAGE POSTED. FOLLOWING AN UNEVENTFUL LANDING AND ENGINE SHUTDOWN, THE RH ENGINE WOULD NOT RESTART. A SUBSEQUENT ENGINE DOWNLOAD SHOWED AN ECU CHANNEL A P3 FAULT AND ENGINE SURGE. THE ECU WAS REPLACED AND THE AIRCRAFT RETURNED TO SERVICE.