How do I use the WASH HEAT BOOST option and how long does it add to the cycle?
Select the WASH HEAT BOOST option before starting your wash cycle. When selected, the wash cycle will be extended by 21 minutes while the dishwasher heats the water for good washing and drying. Note that selecting the ENERGY SAVER option will also cancel the WASH HEAT BOOST. (Page 4)
From the official GE GSD820 Dishwasher manual, page 4
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