How to hard factory reset an Aqualink RS4 controller?

[BlackBeardsPool]

I'm stumped. I've been searching for definitive instructions for how to hard reset an Aqualink RS4 controller back to factory defaults. Does anyone have instructions on how to do it?

Here's what I'm planning based upon what I've gleaned from my searches:

1) Clear Memory
2) Disconnect 9 volt battery
3) Cycle power

Anything else needed?

Thank you