Comment by superseeplus

Also worth checking your dishwasher manual to see if it has a minimum temperature requirement for the incoming water. If it does, run the kitchen faucet till the water gets as hot as it can before starting the dishwasher. Many cheap dishwashers have a heating element which cannot heat the water to the required cycle temperature unless the incoming water is hotter than a certain temperature. More expensive dishwashers can work with cold or hot water.