What water temperature is required for effective cleaning in the GSD3100?
The entering water must be at least 120°F and not more than 150°F for effective cleaning and to prevent dish damage. You can check the water temperature using a candy or meat thermometer at the hot water faucet nearest the dishwasher. If the temperature is below 120°F, raise your water heater temperature or use the HOT START option. (Page 11)
From the official GE GSD3100 Built-In Dishwasher manual, page 11
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