How To Fix A Washer That Keeps Filling - Washing Machine Repair
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How To Repair A Washing Machine That Won't Stop Filling

About this repair:

  • Rated as REALLY EASY
  • 609 repair stories
  • 2 step by step videos

Water Inlet Valve

Water comes into your washing machine for the wash and rinse cycles through the water inlet valve. So an excess of water at the wash or rinse cycle could be a result of a malfunctioning water inlet valve. You can perform a simple test to see if the water inlet valve is at fault. Observe the washer’s fill cycle. When there is enough water in the tub, unplug the washer. If the tub keeps filling, you have a mechanical problem with the water inlet valve and it needs to be replaced. Meanwhile, turn off the faucet to the household water supply so the washer doesn’t cause a flood. If the tub stops filling when you unplug the washer, it is an electrical problem. The water inlet valve runs from solenoids that are connected to the timer (or electronic control board), and the water level pressure switch. Refer to the sections in this guide on those components to learn how to test them for problems.

Water Level Switch & Pressure Switch & Air Dome Tube

Sometimes a defect in the devices used to measure the water level can cause your tub to overfill during the fill cycle. Here’s how the water level is measured: there’s an air dome tube or hose hooked up to the tub. The pressure in your filling tub compresses the air in this tube. When the tub is full enough, the air in the tube pushes against a diaphragm at the water level switch. And the water level switch then turns off the inlet, stopping the flow of water. A leak or blockage in the tube ruins this process because the air pressure never gets strong enough to push the diaphragm. A flaw in the switch could also mean that the water inlet doesn’t get turned off. Start your diagnosis by unplugging the washer and finding the air dome tube that runs between the tub and the water level selection dial behind the control panel. Take the hose off and put it under water, pinching one end closed and blowing into the other to check for air bubbles. Is the tube blocked with something? Look through the tube with a flashlight or feel along its length. And check for cracking or worn spots. If the air dome hose was fine, or once you’ve cleared or replaced it, check the water level switch too. Are there indications that the mechanics of the switch are faulty or that it is clogged? To test the continuity of the water switch circuits, let your washing machine fill up to the proper level and then unplug it. Find the pressure switch and the terminals on it that control the water inlet valve, by checking your model’s wiring schematic. Pull those wires and test them with your multi-meter while the tub is still full. If the resistance of the contacts for the inlet water valve is infinite, your water level switch is fine. Otherwise, it needs to be replaced. If yours is an electronically controlled washer, the water level switch could be under the tub in the neighborhood of the sump.

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