Well, here is my next one…
I’m unhappy to report that the replacement drone you have provided has also turned out to be faulty. This issue occurred while testing with the drone with the supplied remote control, but I thought it was a random occurrence as I was flying near water at the time. I have since experienced it flying on WiFi. What is more it has increased in frequency to the point of making the drone unsafe to fly.
Shortly after take-off, perhaps after a few position adjustments, the drone may start to rise in the air without any joystick inputs at all. If left it will continue to rise until it reaches maximum altitude.Downward stick movements while the drone is rising will trigger a “Landing” message and the drone will begin to land. Other control input may then cancel the landing message, and the drone may start to ascend again.
I can also see the reported altitude being displayed as 0.0 in red on the phone screen when the drone is many meters in the air. This may be displayed randomly. Looking in the warning log I can see a message “Downward sensor error. Aircraft unstable at low altitude. Please fly with caution.” (13:43:17 on 7/2/19). which is still in the log.
On the basis of this I have discovered that if I disable the Downward Vision Positioning in Visual Navigation Settings/Advanced the drone does NOT start to rise without input. However, as I’m sure you are aware this makes precision landing difficult, and when flying low, the hover is far less stable. I have used the DJI Assistant 2 software to reset the drone and re-calibrate the visual sensors. I have checked the camera lenses very carefully and they are clean.
I’m in the process of making a video to demonstrate this error, but I’m writing in case you have any suggestions that I may have missed or if this report is sufficient to warrant an immediate recall.
I’m now very worried that my warranty will run out before I have a stable aircraft. You have supplied me with two faulty drones and one faulty controller as replacements, all worse than the items I owned in the first place. Please advise me if the warranty will cease to be valid at the one year anniversary even if I still have a faulty drone. If that is the case I would need a refund of my purchase.