I am flying a Phantom 4 Pro V2.0 and have had issues with the aircraft ascending above maximum altitude settings. Also experience uncontrolled drifting when no controller input or flight plan engaged. Using drone mostly for mapping and was previously using Drone Deploy until issues started to arise. Have switched to Drone Link for flight planning and still having issues. Maximum flight elevation set in DJI GO 4 app is 122meters (400feet). Most flights plans are set up at 150 feet to 300 feet ATL. Return to home set at 90 meters (295.2 feet) The aircraft continues to be very unreliable in flight. Even when flying freehand in DJI GO 4 App, it will start to climb, then I take finger off the left joystick and it will continue to climb without input.
Warning signal comes on “Max Motor RPM Reached” when no input to controller and it continues to climb way above safe flight altitude and above all settings in the DJI GO 4 app. I have updated firmware on both drone, remote and all 3 batteries, calibrated remote, sent flight logs to DJI and they said their engineers would look into it. No response from Flight Log info that was sent to DJI and synced. Was flying a site recently, drone started to climb above 400’ well above the flight plan level of 300’ so I disengaged from the flight plan and tried to manually fly it home. It was difficult to get back as the inputs were very slow to respond and felt like drone was being controlled by someone else as i would take fingers off the controller and the drone would continue to drift without input from controller and flight plan was suspended. I sent the drone and remote into DJI after having to park it in a bush upon returning from flight that it ascended above 400’ AGL and was drifting so bad that it was unsafe to land it on the hard quarry floor without knowing i would significantly damage it trying to land as its drifting, and they are saying it is functioning properly when they tested. Tried flying it yesterday after receiving back from DJI and every flight was still having issues with uncontrolled ascent and drifting of the drone. Also have a DJI Mini 2 that flys great, without any issues on the same iPhone 10X Max. I am Part 104 and feel that i can no longer fly the P4 V2 until this uncontrolled ascent/drift is resolved so any assistance would be appreciated.
Link to a flight log