John S Redlands , CA August 07, 2016 Appliance: Maytag Washer NFW7200TW11 Maytag Washer Nfw7200tw11: Nd error code not draining. How to replace Washer Water Level Pressure Switch. 1. Check drain pump It was free from obstructions and impeller worked smoothly so it was ruled out. 2. Replace the water pressure sensor switch Unplug washer, take off top panel on washing machine. Disconnect hose going to switch on upper right hand corner. Disconnect wires that plug into switch. Take out screw holding switch in place. Install is reverse. Washer works again. This is the fifth time I have fixed this washer myself. Each time using this website for parts. Washer is 9 years old. 8 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes