Bought a 6040-4 axis machine. Axis control is fine but no spindle power. I have a P.off error code on the display which I read somewhere could be a undervoltage (?) error. The unit is wired for 110v but the VFD unit says 220v on it. (model JSL-E-1S-0.7G). Inside the VFD unit there appears to be a relay with a AC110V label. Transformer coil is 110v.