Does Your Washer Need a New Water Level Switch?

12 January 2021
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The water level switch in your washing machine is responsible for stopping water flow and starting agitation in your washer. If the switch is bad, your washer may not fill with water, it might fill with too much water, or the washer may not agitate. Here's how the water level switch works and what an appliance repair person might do to fix your washer.

How the Water Level Switch in Your Washer Works

The switch connects to the load size knob of your washer. The switch is responsible for letting in the right amount of water for a small or large load of laundry. It does this by sensing pressure through a small tube that runs from the switch to the outside of the laundry drum. As water fills the drum, pressure in the tube increases. When the pressure reaches a certain point, the switch stops the water and triggers agitation.

What Causes a Switch to Malfunction

The switch itself can go bad, or there might be a problem with the wiring. An appliance repair person can test the switch with a multimeter to pinpoint the problem. The switch might also malfunction if there's a problem with the small pressure-sensing hose that's attached to it. If the hose is clogged with debris or if it has a kink or hole, the switch won't be able to work properly.

How a Bad Water Level Switch Is Repaired

To access the switch to repair or replace it, the cover has to be taken off the control panel, and the front of the washer has to be removed to access the bottom of the tube that connects to the drum. Once that's done, the water level switch can be seen and tested with a multimeter. The hose can be checked and the old switch can be removed so a new one can be put in.

If the problem is with the hose, the repair person might clean the hose or replace it and then verify the problem has been solved. However, if the problem is with the switch, the switch can be replaced with a new one. If the switch and the hose are in good shape, the switch may just need to be adjusted. The appliance repair person can do this by turning a screw on the side of the switch.

If the switch isn't adjusted properly, it can let in too much water when you want to run a small load of clothes, and that defeats the purpose of having a water level or load size selector knob on your washer. Whether the water level switch needs to be adjusted or replaced because your washer won't agitate, an appliance repair company like D-3/A-OK Appliance Service Inc. can address it.