Yes, that site is a good site, and it should give you some more info.
On your water level problem, once you open the machine you will see a plastic tube coming from the water level switich down the side of the tub . Check it for any leaks or any other problems and replace as needed. If it is ok, then replace the water level switch in the console and you should be fine.
Good luck and let us know how it turns out.
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