Hamilton Beach Water Cooler with Storage Cabinet "vinigar" Questions

...flowing through it tastes funny. run a fit for human consumption cleaner through the system maybe vinigar...sounds like you have stagnent water or mould in the system...run plenty of water through ...

...water on the cold side but running free on the Hot side.Yesterday I flushed the cooler out with vinigar and hot water but today we have a problem I have same problem keeps running till freeze up ...