welcome to the world of Neptunes.....that's a touch panel version, internal heater and higher spin speeds....with Stain Brain!
but a return valve, you got me stumped on that one....can you get a bit more detail as to what its not doing, or what this valve should be doing....
the only thing I can think of as far as valves on these, is the solenoid inlet valves, and the set of solenoid valves that controls which dispenser needs water to dispense....