Thanks everyone. I found out how to set it to 7-step last night. As EdSawyer says, I need to turn off the unit, hold "start" and turn it on, get to the program mode, go through the manual until it shows E6, then set it to 7-step.
The contact points are in place. I just don't know why I have to "flush" and "drain" it everytime before I start a process. I didn't touch anything, just let the machine flash & drain, then select a process, it just ran normally after all that. Several attemps, it still performs like this.