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Reasons Why Bosch Washer Won’t Fill (How To Fix)

Before a wash cycle starts the tub on a Bosch washer will fill to the level that you’ve set it to. The water flows from water supply lines that are located at the back of your Bosch washer. However, there are a few issues that will cause a Bosch washer to fill with water, so today I will explain how to fix a Bosch washer that won’t fill.

As a general rule, there is a kink in the water inlet pipe, the water supply line has weak or no water pressure, the water inlet filters are clogged and needs to be cleared, the door lock has failed and needs to be replaced, or the pressure switch has failed.

Modern white washer with clothes inside

There are a few simple checks you can do yourself. But, some of the components require special tools like a voltmeter, and an average level of handyman skills to fix. Below, I will explain what’s involved in troubleshooting each of these problems, and if and how to fix them yourself.

Reasons Why Bosch Washer Won’t Fill (How To Fix)

There are components that are responsible for allowing the water to flow into the tub on your Bosch washer, but the water flow can also have a problem. To identify why your Bosch washer is not filling there are a few reasons. Here’s what they are.

In general, there is an issue with the water supply which you can test by disconnecting the water supply lines at the back of the washer. Otherwise, there can be a kink in the water supply lines, the water inlet valve filter is clogged, the pressure switch is broken, or the door lock is broken.

The easiest thing to check first is the water supply lines at the back of your Bosch washer. But, it’s also a good idea to first restart your Bosch washer in case the onboard computer has frozen. To restart your Bosch washer unplug it at the wall outlet, then plug it back in again after about 10 seconds.

Another issue is that your Bosch washer doesn’t turn on at all. You can tell this is the issue if none of the lights show on the control panel. But, not all Bosch washers have lights on the control panel.

So, a good test to do is to plug a different device like a smartphone into the same wall outlet. This will tell you whether there is power going to your Bosch washer.

What is Causing Bosch Washers To Not Fill?

Modern white washer with clothes inside

The flow of water into your Bosch washer comes from the plumbing fixtures located on the wall behind your washer. As long as these are turned on all the way, and are supplying water you Bosch washer should fill when you start a wash cycle. When it’s not working here are the reasons why your Bosch washer is not filling.

As a general rule, there is a kink in the water supply line that is stopping water from getting into the tub, the water inlet valve at the wall is not supplying water, the pressure valve has failed, the water inlet filter needs to be cleared, or the door lock has failed.

It’s difficult to find out what the issue is ahead of time, therefore, you need to check each of these troubleshooting steps one by one. I’ve ordered them from easiest to hardest below. And provided step by step instructions for how to do each troubleshooting step.

Bosch Washer Won’t Fill Due to a Kink in the Water Inlet Line

Modern washer with clothes inside

There are water inlet valves that go from the wall to the back of a Bosch washer. When the washer is moved or first installed the pipes can accidentally get bent. If this happens the water pressure will be too low.

You can easily inspect them by gently pulling your washer out a bit so you can see behind it. It’s important when you do this to be careful not to tug on the water lines. So, pull it out a little bit at a time, and don’t pull it out if you can feel it tugging on something.

There are usually one or two hoses at the back that go. One for cold water. Or, two for hot and cold water.

Make sure both are straight and there aren’t any kinks in them. The next step should be done with the washer still pulled out a bit from the wall.

Bosch Washer Won’t Fill Because Water Supply is Low or Off

confused woman standing

There are valves at the wall that can be turned on and off. Typically it will be a tap looking fixture. If the valve is inline with the tap it is on. But, if it’s turned 90 degrees to the pipe it means it’s turned off.

It’s possible it’s not turned on all the way. Make sure the valve is all the way open and is inline with the tap. The other thing to do is test that water is coming out from the water outlet at the wall.

To test it you disconnect the water hoses by unscrewing them using adjustable pliers or an adjustable wrench. Before doing so make sure to turn off the water valves at the wall.

Then put something underneath the water outlet valve at the wall to catch the water, and then turn them on.

The water that comes out should have good pressure, and not trickle out slowly. If water isn’t coming out fast enough from the water valves at the wall then there is an issue with your plumbing. You should have a plumber take a look at it. It’s also a good idea to test the other faucets in your home to make sure the entire water to your home hasn’t gone out.

Bosch Washer Won’t Fill Because Water Inlet Filters are Clogged

Modern washer with clothes inside

There are filters where hoses connect to the back of your Bosch washer. They are fairly small, about 1 inch in diameter. These filters trap sediment that can be present in the water.

Also, if you have hard water, they can build up hard water deposits. These filters are visible when you unscrew the water inlet hoses from the back of your washer. Before unscrewing the hose, be sure the water valves at your wall are turned off and otherwise water will flow out of the hoses.

There can also be some water in the pipes so have a bucket or similar handy to catch any water that comes out when you unscrew the hoses. The filters need to be removed with a pair of pliers. They have a tab in the middle which you can grip with the pliers to pull them out.

It’s easy to damage them when you try to pull them out, so be very careful. And if in doubt it’s best to leave this step for a registered technician.

Copyright protected content owner: Readytodiy.com and was 1st posted on 2022-09-13. .

Bosch Washer Won’t Fill Because The Door Lock has Failed

Modern washer with clothes inside

The door lock on Bosch washers needs to be working for your washer to operate. If the onboard computer detects that the door on your Bosch washer is not closed it won’t start. This can happen if the door is not closed properly.

Or, if the door latch component is broken. As a first step try opening the door, and closing it gently but firmly. If it still wont start this issue needs a repair technician to fix.

It’s possible this repair is covered under warranty. Therefore, you should first contact Bosch support to see if it is. They can then advise how to have the repair done.

Bosch Washer Won’t Fill Because The Pressure Switch has Failed

Modern washer with clothes inside

A pressure switch is a component in a Bosch washer that detects how much water is in the tub. It can fail electrically, or mechanically and the onboard computer won’t know if the tub is filled or not. Therefore, it won’t fill.

This component is difficult to test yourself. Therefore, if you’ve got through all of these steps then it’s best to contact Bosch support. As the issue is not something that you can fix on your own.

Copywrite article owner is Readytodiy.com for this article. This post was first published on 2022-09-13..

As a general rule, the filters where the water supply lines connect to your washer need to be cleaned, the taps that supply water aren’t turned on all the way, or aren’t supplying water, there is a kink in the water supply lines, the door is broken, or the pressure switch is broken.

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ReadyToDiy is the owner of this article. This post was published on 2022-09-13..

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