DF50 fault code

[byylaunch]

I have a 2014 DF50 high thrust. I am getting a fault code in the mornings of
3-7. can anyone tell me what that code means, The motor is running great.
I get this code in the tach. as a flashing check code with a beep after each number flash's.
Does anyone know what this code means?

[artdf175]

Unless they have added something new
I do not see a 3-7 error code listed in the book