My VFD has worked just fine for the last 8yrs. Don't run the lathe a ton, VFD has maybe a couple hundred hours on it. Plugged it in today and got this error code that I cannot interpret. I believe it is a 2016 Huanyang brand. Any ideas? None of the buttons are responsive. It's a 2.2kW 7a controlling the main 3hp spindle motor on my 13" Clausing Colchester.