samsung's smart washer automatic temperature control (atc) doesn't know the definition of hot water.  there's no way to override atc, either.

"..in those regulation cycles, hot temperature is similar to acceptable adult bath-water temperature." -user manual

no adult would take a bath in that water. if i want warm water, i would select warm water. 

the only way to get enough hot water into the tub is to turn off the cold water supply.

if this information was disclosed at the time of purchase, i would not have bought this washer. 

$600 is down the drain.