Keith A Derby , KS August 10, 2015 Appliance: Whirlpool Washer WTW5840SW0 Whirlpool Washer Wtw5840sw0: Water level switch not working properly. How to replace Water Level Switch Pressure Switch. Replaced water level control switch after watching an instructional video. Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes