Answer Hi Rory. It sounds like you may need a water valve part # 10031360 as well as the main control board part # 00481304. If the cold water valvew has become plugged then the hot will obviously only work. The main control board is considered the brains and if it keeps on reunning then it is time to change it as well. Thank You. Read More... Answered by AppliancePartsPros.com | Wednesday, March 14, 2012