Changing the solenoid valve in washing machines

When your washing machine doesn't take in water, takes in little water or doesn't take in the softener, the culprit may be the solenoid valve. As an appliance technician with years of experience, today I'll explain how to identify and change this part in models from brands such as Bosch, Balay and Siemens. Follow these steps and you'll have your washing machine working properly in no time.

What is the solenoid valve and why does it fail?

The solenoid valve is a fundamental part of your washing machine. Its function is to control the water entering the drum and distribute it at the right times, allowing the washing cycle to develop correctly. When the solenoid valve fails, it can cause problems such as:

• No water inlet : The washing machine is not receiving enough water to complete the cycle.
• Low water intake : The washing machine is left with an insufficient volume of water, which affects the quality of the wash.
• The fabric softener is not distributed : The fabric softener remains in its compartment and does not reach the clothes.

The symptoms of these problems are usually immediate: incomplete wash cycles or clothes that are not rinsed properly.

How to tell if the problem is the solenoid valve or the water supply

Before you jump into replacing the solenoid valve, it's important to rule out other common problems that can affect the water inlet into your washing machine. Here are some additional steps you can take to make sure the problem is with the solenoid valve:

1. Check the water supply : Make sure the water inlet tap is open and working properly. Sometimes, there can be problems with the water supply in the house or even a clogged hose.

2. Check the water inlet filter : On most washing machines, there is a small filter in the water inlet hose that can collect dirt or debris. If this filter is blocked, water will not flow properly into the washing machine, and it may appear that the problem is with the solenoid valve.

3. Try the cycle without load : If your washer is not picking up water, try running a short cycle without any clothes in it to rule out problems with the drum or weighing system.

What causes a solenoid valve to fail?

Washing machine solenoid valves can fail for a variety of reasons, and knowing them will help you prevent future problems:

1. Lime or sediment build-up : If you live in an area with hard water, minerals such as calcium can build up inside the solenoid valve, blocking the flow of water. It is advisable to use anti-lime products periodically to avoid this problem.

2. Natural wear and tear : Like any other mechanical component, solenoid valves wear out over time due to constant use. This is a common cause of failure in washing machines that have been in operation for several years.

3. Electrical problems : A fault in the washing machine's electrical system, such as the control board, can cause the solenoid valve to not work properly. If the problem persists after replacing the valve, it may be necessary to check the electrical connection or the control module.

Tools needed to change the solenoid valve

To perform this repair, you will need the following tools:

• Phillips or Torx screwdriver.
• Pliers for removing pipe clamps.
• Wide-blade screwdriver to unanchor the solenoid valve.

Make sure you have your tools on hand before you begin, as they will make the whole process easier.

Steps of the process

Step 1: Remove the top cover of the washing machine

The first step is to remove the top cover of the washing machine . This cover is usually secured with two or three screws that can be removed with a Phillips or Torx screwdriver. After removing the screws, slide the cover back to reveal the interior.

Step 2: Identify and disconnect the solenoid valve

Once you have access to the inside of the washing machine, locate the solenoid valve . On some models, you will find a dual-body solenoid valve, which controls two separate water inlets.

1. Disconnect the tubes : The tubes leading into and out of the solenoid valve are secured with metal clamps . Use the pliers to squeeze and release the clamps.
2. Disconnect the electrical connector : Carefully remove the quick connector from the solenoid valve. This connector ensures the electrical connection necessary for the valve to function.

It is helpful to mark the position of each tube with some masking tape to remember where each one should go when you reassemble it.

Step 3: Remove the solenoid valve

To remove the solenoid valve, you usually don't need to remove any screws. Instead, use a wide-blade screwdriver to release the anchoring clips that hold the valve in place. Pry it up with the screwdriver and, with a small downward stroke, you should be able to remove the faulty solenoid valve.

Step 4: Mount the new solenoid valve

With the new solenoid valve in hand (you can find it at electrotodo.es ), follow these steps to assemble it:

1. Insert the new solenoid valve from the inside of the washing machine, making sure to snap it into place.
2. Reconnect the tubes in the correct order : bottom tube first, then top tube, making sure the metal clamps are firmly attached.
3. Connect the electrical connector last to avoid interference during the assembly process.

Step 5: Test the washing machine

Once the new solenoid valve is assembled and all components are secured, replace the top cover of the washing machine and test it. Start a wash cycle and make sure that the washing machine is taking in water correctly and distributing the fabric softener at the right time.