Depending on age and other factors; key pads do wear out and require replacement. Many of these controllers us a silicone positive touch system like the keypad on a computer. Others use a direct contact system that has a spring action and contact points. If the later fails, it can be due to use, a breakdown of the recoil system, or damaged contacts.
SOURCE: Bosch diswasher
check heater element for open circuit, if the dishwasher fills and empties and wooshes the water round, there is little else to go wrong
SOURCE: Bosch SHU9915 Does Not Drain
faulty controls..the signals are apparently getting there, but the machine is intepreting them oddly..may need a new control board behind panel
SOURCE: Dishwahser rinse cycle running for hours
I have a Bosch SHU5316 -- same symptoms -- turned out to be the control module (the thing with the lights & buttons on it). First replaced under parts warranty. The next time, I did it myself (you take part of the door apart). Not too bad to do, but the module cost about $100. Since this was the second time it happened, I bought a "lifetime" replacement warranty on the module ($10). Best ten bucks I ever spent. I am on my third module.
SOURCE: Dishwahser rinse cycle running for hours
I'd say it is the control module is out -- cost about $100 (I am on my third). I got a "lifetime" warranty when buying my second one. If you are handy, you can replace it yourself. You can call Bosch to confirm this (I did). It mounts inside the door. I have a Bosch SHU5316.
SOURCE: My Bosch Dishwasher cycle runs for 2 plus hours!
If this unit is running for a long time it is because it is still try to heat the water temp up it is eather the control board or the heater.
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