Hi Ian,

OK yes I've tried that. Press stop, activate the digital input configured as RST (this mean links terminal P24 to terminal 5), and turn off. I've tried this lots of times. Fault is still there on start up.

Note that I don't have the spindle connected (UVW terminals) and it still faults E14 (earthing of UVW), so something must be broken inside the VFD.

Looking at my options now:
Have a look inside
Send off for repair - economical?
Buy a new one - I see that the Chinese 2.2kW VFDs are about £90 on ebay (my VFD was £360!)

Question, can I connect a 2.2kW VFD to my 1.5kW spindle? That would leave a future option of a 2.2kW spindle to give me larger collets.

I think that spindle itself is OK because there is about 2.2ohms between each pair of pins. Not a complete check I realise but promising.

Thanks