I know it sounds crazy, but my Series III mill will only go forward, no matter which way the switch is set for manual or programmed.

I've had my Series III since it came out and it has 1000's of hours on it so I am not new at this and I assume some setting in the VFD got switched somehow. I was right in the middle of a long series of holes and suddenly broke a 3/8 drill. Very odd I thought so I put a new one in and started over and I watched it and it was spinning in reverse. I shut off the mill, let it sit, and tried again. The spindle works great, just no matter how it's set, it only spins in reverse. The speed control works just fine.

I'll call Tormach in the morning, but any idea what VFD setting and how it suddenly changed.