I went out on a service call yesterday that my customer was complaining about her NEWER SEARS KENMORE WASHER (Top Load) was not getting her clothes dry after the final high speed spin. In fact she stated they were soaking wet and water still remains in the bottom of the tub. Here is what I ran into when I arrived at the house: Washer was in the basement - located right next to a double wash basin with a clogged drain on both sides, this was a very large concrete wash basin. Customer said the landlord had snaked the drain but it got clogged up again and filled both basins with waste washer water almost to the top. I noticed the drain hose from the washer was submerged under the water roughly 1 1/2" inches. I looking into the tub of the washer and noticed water in the bottom of the tub. I took the cabinet off the machine and ran a high speed spin. The washer went into high speed and pump was pumping the water out of the drain hose into the wash basin and the tub was emptying. I lifted the drain hose up and out of the water to watch the washer pump the water out - Nice and STRONG and the tub was empty. I then filled the washer again with a small amount of water and advanced the timer to spin to check the pump again (this time I had the customer watch the washer pump out and empty) but before the customer left I put the drain hose back into the water submerged and showed her that the water is still pumping the water out! Then the washer shut off and she then noticed the water was coming back into the washer
I purposely had her watch what happens when you submerge a drain hose that is above the washer fill line. What had happened here was a reverse siphoning of the WASH BASIN WATER BACK INTO THE WASHER. THE WASHER ACTUALLY A PUMP REVERSING THE PUMP PROCESS !!!
MORAL OF THE STORY - FIX YOUR CLOGGED WASH BASIN AND YOU FIX THE PUMPING AND DRAINING PROBLEM.
I'll post the picture what it looked like (once I figure out how to)