You could try and put it diagnostics and run it manually to see if it still shuts off abruptly. I think it’s unit off no lights, hold add time up and down then press power. You can cycle the tests with start. Might have a bad motor if it’s split phase and it’s stuck in start windings too causing motor to over heat. Simple test for that is start it, let it die, don’t touch any buttons! then wait five minutes and it’s thermal overload will reset then it’ll start again and die. That would be a bad motor.