Sorry to disturb you, but i have an okuma osp5 inverter that had that same problem error 201-4, after repairing the power modules it worked just to get errors 171-1 and 170-1 after power on. I've tried to get the error codes list and the manual, but had no results. My email is
filipebatista@vodafone.pt, if you have it would you please send it to me? Thank you very much.
Filipe Batista
filipebatista@vodafone.pt