1. Remove the panels of the machine.
2. Locate the flow meter, remove the 3 screws in the top of it. You may need to snip the zip tie holding the wires in place to more easily access the 3rd screw.
3. When the top of the flowmeter is removed, you'll see there is an inlet and outlet pointed out here, make sure both passageways are clear and that the white magnet sensor spins freely.