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Replacement parts for WHIRLPOOL GU2500XTPQ1 Undercounter Dishwasher | AppliancePartsPros.comHere is the tech sheet
http://www.servicematters.com/d...0Sheet%20-%208535451.pdfthe fuse is bad again so something is drawing too many amps or whatever from somewhere else that causes it to fail. that question is beyond me . When the fuse was changed was it's harness also changed. If not that may be your problem.
Try to figure out when in the cycle it blew.
Check the motor windings for resistance, be sure to also check them to the case (ground), should be infinite ohms.
Check the wax motor's for resistance.
Check the motor capacitor. Unfortunately checking it with a meter is not very definitive as it is not being checked at it's operating voltage.
If all devices measure OK then it becomes a crap shoot unless you can get a clip on amp meter and check the current flow.
I am going to work on the pressure problem but it still makes me wonder what the pressure problem has to do with the electronics. I do not think that they are related but stranger things have happened.
Check it with a meter for resistance to be sure it is OK, also check to it's body (should be infinite ohms).
Probably would not hurt to check the voltage at the valve.
Check your line voltage first then the valve voltage, they should be close.
The most common cause of low water levels is that the screen filter on the input side of the valve is partially clogged. If it is just clean it, do not remove it as it is there to keep crud out of the valve which could hold the valve open and cause a flood.
Be sure to remove power from the unit when checking resistances.
Also always remove at least one wire from the device you are checking to ensure that you are not reading an alternate/parallel circuit path.
