Vincent S Broken Arrow , OK October 16, 2021 Appliance: Whirlpool Washer WTW5200VQ2 Whirlpool Washer Wtw5200vq2: We have either hot or cold, but no warm water intermittently. How to replace Water Inlet Valve Assembly. Suspected either thermistor defective or the temperature controller. Neither could be conclusively confirmed as accurate so I replaced the temperature switch and valve assembly with thermistor. Things are working as expected now. 3 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes