I have a MDB5130AWW model dishwasher and it has worked extremely well up until a week ago. Now there is water sitting at the bottom of the dishwasher, and the "Clean" and "Rinse Only" buttons are blinking. I've read the manual, and ran the Automatic Function test, and it seems that these two buttons blinking indicates a Motor problem, specifically a low current problem. Please Help!

E15 error code indicates that there is water sitting in the base of the dishwasher.
Most common reasons:

• malfunction of the water drainage sensor when the aqua-stop worked
• the system is clogged

Hi,

The scum, film and white residueproblems have started since the reductionof phosphates in dishwasher detergents.

Here is a tip that will help you to solve the problem of films, residue, and scum in your dishwasher.

DishwasherResidue and Film on Dishes

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The problem could be the pump, the drain hose or the timer. It will not drain if left to sit. The thing to try first is to put a cup of white vinegar in the machine and let it wash. This may remove sludge or scale blocking the strainer. 2nd take the hose loose at the sink drain and see if it is half clogged with grease or food. Check the hose and the nipple. Last, if it does not work take the bottom off the dishwasher. 4 screws and a plate. look for the pump and see if the hoses are clear. Sears will sell you a manual to repair and test this machine at its Parts Central on line

is there water sitting in the bottom of the dishwasher or on the floor? If its sitting in the bottom of the dishwasher, most likely the discharge pump isn't working properly and not emptying all the water out. The pump will usually run for an extended time to pump the water out until it finally times out and you're still left with water in there...

check your screen or strainer in the bottom of the unit it is what filters the water to the pump if it has some trash in it or is plugged it will reuse the old water to rinse the dishes

Check your vent drain or your Garbage disposer connection and make sure it's not plugged.

When you use your dishwasher so infrequently the water inside evaporates and allows the pump seal to dry out, so there is no longer the lubricating water there. You may be able to solve this by pouring a couple cups of hot (not bioling) water directly into the center of the lower wash arm (center spray tower) and letting it sit for several minutes.
If that does not work, you can take the bottom panel off and turn the fan blade on the motor by hand until if turns freely. (don't do this with power to the motor or you may have some nasty banged up fingers !)

To prevent this from happening in the future, keep some water in the dishwasher by poring a bit in every now and then, or by running a fill and pump cycle at least once a week or so. If you are away for extended periods, you can try adding RV antifreeze to the dishwasher while away.

Is the top arm spinning freely?

I had a similar issue with my MDB5130AWW. The Wash was interupted and wouldn't come back on. Not knowing where to start I read some other solutions on this site and started by opening the bottom cover. Thats where I found a 4 page diagnostic / Electrical Schematic. Start with the Sales Demo mode of pressing the Rinse button 5 times within 5 seconds. I had to do it twice before the washer came "alive". I was estatic after reading about the $100 mainboard cost and maybe more for other parts. The document has other test and what different keypads mean when flashing. Thankfully I didn't have to go that far.