So, I have a bosch shu9910 dishwasher and my hot water heater is a tankless bosch aquastar 1600h. As others may have noted, these tankless heaters require a minimum flow rate to activate. The 1600 requires .5gpm as a minimum. My dishwasher just misses activating the hot water heaters threshold, unless I manually cut off the hot water feed to the heater, then turn it back on again. You should see the silly dance I do to get hot water to the dishwasher! I set timers and run to the basement to open and close the feed to the water heater. When the dishwasher calls for hot water, it doesn't activate, but if I close the feed valve, then open it, while the dishwasher is demanding hot water, it activates and stays working.
I was thinking of replacing the dishwasher's water valve with a different one which would allow a slightly higher flow rate. Maybe that would be a solution. Does anyone know a replacement valve which could do the trick? Does anyone have a different solution?