How do you enable flow switch bypass for DHW?

Change menu functions by pressing the screwdriver symbol. Enter password 030 by using the arrow keys. Confirm password by pressing thescrewdriver key again. The Moducontrol display will indicate # 1. Using the arrow up key scroll to position # E bAF. Using the screwdriver key key enter the parameter. Existing parameter should read # 0. Change parameter by using the up arrow and toggle to the # 1. Confirm the new setting by pressing the screwdriver key. Exit from program menu by pressing the textbook key.