If your hot/cold cooler is not producing cool water as required you may need to perform a reset on the machine. To do a reset, unplug your water cooler, and leave it unplugged for 24 hours. When you do turn it back on, be sure to turn the back switches on as well. In case of malfunctioning parts, you may need to buy replacement parts. It would be good to get a professional to help you trace the problem. Check out http://www.ehow.com/how_5019722_repair-water-cooler.html.