Inlet hose stuck on back, not a real problem, mine is the same. filling with water, when not being used, could be water inlet valve faulty, it would need replacing, its the bit you connect the inlet hose to. If your drain outlet, is low down, water could of been going in for some time with out you noticing it, Water going in would deplete your salt and rinse aid very quick, possibly why the lights were on. Some times, you could turn the program dial, to a point just before end of rinse, and it will pump the water away, rather than have to lift it out
SD, August 2011