Daryl D Kailua , HI April 19, 2020 Appliance: Whirlpool Undercounter Dishwasher WDT790SAYM2 Whirlpool Dishwasher Wdt790saym2 / : Water would not heat up. How to replace Heating Element. Replaced the whole works, heater assembly, high limit switch and turbidity sensor. It took about and hour thanks to your videos. 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes