Wookong 4 rapid white lights..?

[nileshafilms]

Hi guys,
I've gryphon x8 with wookong controller. It was flying very smooth till now but since last 2 shoots it shows 4 rapid white lights and altitude level changes suddenly.. means comes downwards quickly after lights.. i have to control altitude..
I can't understand why its happening.. it shows altitude error.. how to fix that pls help..

 

[Carapau]

4 rapid white lights normally means IMU error. This can be caused by excessive vibration. Of course it could be the IMU being faulty too. Not easy but if you can borrow another IMU this might help you trouble shoot.

 

[nileshafilms]

Oh yes.. i saw vibration while flying.. will you pls let me know how to fix vibration issue?
Thanks

 

[Carapau]

Balance props and motors and check bearings.

 

[Cameraj]

Be careful, we had that happened to us on a heavy lift x8, had a full lockout and the copter went full throttle out of control and started to orbit us at around 50mph scary, Knowing what was going on , switched out of att to manual got control and was able to land it. Very scary. Balance motors and props, vibration causes the white flashes. Good luck and fly safe.