Solenoid valve for a washing machine as one of the main elements

Solenoid valves for connecting various devices to water supply systems are used quite often. Such devices have an electromechanical principle of operation and are a type of locking equipment. Experts call them solenoid (solenoid - magnet).

Solenoid shut-off elements are often found in various industries, in water and gas supply systems. In accordance with its functions, in washing machines this device is called a filler or inlet valve.

How to check and replace the inlet valve in a washing machine

Each part of the washing machine performs its assigned function. So, the pump is used to drain water from the tank, and the inlet valve is used to draw it in. When its membranes are in the open position, water is poured. Once a sufficient amount has been collected, the membrane closes. How to check and replace the water valve for a washing machine? We will provide step-by-step work and useful recommendations in the publication.

Where is the solenoid valve located? Varieties

Determining where the part is located is not difficult. Just lift the top cover of the washing machine. The element is located at the rear wall, just near the connection point for the inlet hose.

The operating principle of the system is as follows:

• You turn on the machine.
• Install the program.
• The control module sends a signal to the water inlet valve coils.
• The internal flap (membrane) opens.
• The liquid enters through the inlet hose, passes through the filter and is fed through open holes into a tank or hopper with powder.

Older models of washing machines (WM) included mechanical control. When the lever of the command apparatus regulated the flow into one of the intake holes.

There are several types of valves: with one, two or three coils. Each path leads to a specific destination. So, in the case of a single coil, regulation is handled by a mechanical lever. Modern models do not use such parts.

Two and three coils supply liquid to different sections of the dispenser, washing out the powder, then water is poured into the drum.

You can determine that the water supply fill valve needs repair by the following signs:

Of course, a multimeter will help to accurately assess the situation. How to diagnose a part, read below.

How to check the solenoid valve?

Start by cleaning the fill system. Perhaps the reason for the slow intake is the blockage. Here is the sequence of work:

• Unplug the machine.
• Close the inlet valve.
• Disconnect the intake hose from the housing. Place the container first because water may spill out.
• Rinse the hose under the tap.
• Remove the filter mesh using pliers.

• Unclog it.
• Remove the top cover by unscrewing the mounting screws at the back.

How to check the inlet (fill) valve? Start by disconnecting the hoses leading from it. They need to be cleaned. Loosen their clamps and remove them from their place. Now start diagnosing. How to remove the part:

• Disconnect the wiring plugs.
• Unscrew the bolt.

Important! This test involves risks and health hazards. Protect yourself first.

• How to open the inlet valve: Apply current to the coils one by one. If the membrane opens, water will flow.
• Is the membrane closed when current is applied? This means the coils are burnt out.

A multimeter tester will help you verify their malfunction. Set its toggle switch to resistance measurement mode. Attach the probes to the coils. Normally, the readings on the display should be 3–4 kOhm.

How to disassemble and repair an element if the indicators indicate a malfunction? Experts recommend completely replacing the part.

If the fault is confirmed, then proceed with replacement.

Replacing the inlet solenoid valve

Above we described how to dismantle the part. You can go to the store with it so that the seller can select a similar replacement. In a top-loading SMA, the inlet element is located at the bottom of the rear wall. To dismantle it is necessary to remove the side panel.

One, two, three coils (sections) and what is it for?

Valves are available with one, two and three coils. The number of coils, and accordingly the water supply channels, depends on the design features of specific models.

Where a single-section water supply valve is used, the further distribution of the flow is regulated by the mechanical lever of the control device, directing the stream to one or another compartment of the dispenser. Thus, the single-section valve is clearly used only in combination with a control device, that is, in earlier models.

In models where all processes are controlled by an electronic module and there is no mechanical drive, two and three-section intake valves are used. But here you can ask a reasonable question: how can a two-section valve ensure the intake of detergent in three sections of the dispenser? The answer is: one of the sections is provided by a flow of water, which is created when both coils are turned on, then their flows connect and form a third new direction.

Valve design and principle of operation

The water supply valve for a washing machine can be in two states:

It is closed most of the time the machine is running. If you take it apart, you will see a small coil inside. The electronic program that controls the “washer” regulates the supply of electricity to the coil. An electrical impulse opens the valve so that it can allow liquid to enter the tank. When the entire chain is functioning normally, the machine fills up quickly.

Based on the principle of operation, such devices are called electromagnetic.

After filling the “washer” to the required level, the control program transmits another signal to the coil. The valve mechanism closes. Now his task is to prevent liquid from entering the hoses: it remains in a confined space during the entire wash cycle.

The valve installed on a horizontal-loading washing machine is located in its upper compartment. On top-loading models it is located at the bottom or on the rear wall. In the first case, you need to dismantle the back panel, in the second - the side panel.

What happened to the inlet valve?

There may be several reasons why the valve stops functioning normally. To repair the element and return the machine to working order, you will have to find out what happened to the device. Let's talk about the main types of breakdowns that can occur.

1. Filter clogged. Immediately after the inlet hose, at the entrance to the valve, there is a mesh that traps various impurities present in tap water. Over time, it becomes clogged and begins to leak liquid poorly. The mesh can be removed without disassembling the machine. It is enough to grab its protrusion with pliers and pull it towards you. After washing, the filter is put back.
2. Membrane contamination. The elastic band also moves up and down with each movement of the rod. If it becomes dirty, it begins to loosely adhere to the valve “seat” and allows water to pass through. To inspect the seal, you will have to disassemble the inlet device. If there is rust on the surface, it must be cleaned off; if there are cracks, the gasket must be replaced.
3. Problems with the spring. Over time, the mechanism may break and the rod will no longer move freely up and down. Therefore, if the metal spiral is broken or deformed, it will have to be replaced.
4. Cracks on the device body. Typically the valve has a plastic "shell" that can become damaged. If this happens, the water will partially flow out of the inlet element, ending up on the electrical components of the machine. Because of this, the washing machine may receive an electric shock, which can lead to a short circuit. In such a situation, it is necessary to change the part as quickly as possible.

Often the plastic valve body cracks on machines that are kept in a cold room. At subzero temperatures, water freezes and bursts the “shell” of the part. Also, the elastic membrane will no longer be able to retain liquid after such “freezing”. Therefore, if after winter the country washing machine begins to leak, you need to replace the inlet device.

After the water supply valve is removed from the housing, it should be carefully inspected. If you notice that the electromagnetic coils are deformed, immediately replace the element; in this case, it is not worth repairing it. We'll tell you how to diagnose a part.

Types of valves and signs of their malfunction

There are several types of water fill valves in a washing machine. Any of them is divided into sections. Each individual section has an electromagnetic element. All departments are connected to a common system and respond to signals sent by the control program. Depending on the number of coils, the devices are:

• single-reel;
• two-coil;
• three-reel.

A malfunction is indicated by one of the external manifestations:

• the display displays an error code consisting of two or three digits;
• after filling the tank, water continues to flood the interior;
• liquid does not enter the tank.

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Troubleshooting

A simple test will help you check the operation of the system. The device is removed from the machine and a hose is connected to it. After connecting the water hose, it should open and let in liquid. As soon as the voltage stops acting on the coil, the mechanism will close. If it doesn't work, it should be replaced. This is an easy test, but you must work carefully to prevent the wiring from coming into contact with a damp environment.

Valve replacement procedure

The valve in the washing machine cannot be repaired. If it is broken inside or its coil is burned out, it is replaced with a new one. They do it like this:

• de-energize the machine by disconnecting it from the network;
• shut off the water;
• remove the back or side panel;
• carefully unscrew the water hoses. When disconnecting, you must remember the location of their installation;
• remove the fasteners holding the device;
• remove the valve;
• install a new one;
• assemble the structure in reverse order;
• check the performance of the system.

If everything was done correctly, the machine will work as before. After turning it on, check how the liquid enters the tank and whether the mechanism stops in a timely manner.

Fill valve for washing machine - check and replacement

The washing machine inlet valve is a small device that allows water to flow into and out of the washing machine automatically. In simple terms, the fill valve is a kind of regular faucet; in any case, it performs a similar principle. You only turn the tap manually to open the water, but in the case of a valve, water is supplied automatically.

The principle of operation is as follows: when you activate the washing program, the control module gives a signal to the solenoid inlet valve. Voltage is applied to the valve coil and an electromagnetic field is formed in it; this field opens the valve itself and the water supply begins. After the water in the machine has reached the required level, the voltage supply to the valve coil stops and it closes.

Types of washing machine fill valves

Fill valves for washing machines may vary. Above we simply described the principle of operation of the solenoid valve, but in reality everything can be more complicated. After all, water must be supplied not through one hose, but through several at different times.

The most primitive valves for washing machines have one coil; these are usually installed on old washing machines. In them, a coil opens the water supply, and through which tube and into which compartment of the powder dispenser it will flow, it is controlled mechanically by a command device. But you won’t see such machines in stores now.

Other solenoid valves for washing machines include two or three valve sections . Depending on which compartment the water needs to be sent to, a specific coil is activated and the required valve opens. So, by activating the desired coil, the direction of the water changes. If the valve has only two coils, then the third direction is activated by opening both sections. Otherwise, a third additional section is required.

As you can see, the principle of operation is very simple and does not raise any questions.

Where can I buy

If you need to buy an electric valve, but you don’t know which company is best to contact, we recommend choosing us for the following reasons:

• We cooperate only with trusted suppliers, providing certified products;
• Each part is made of high-quality material, so it is reliable and durable;
• we have affordable prices;
• We offer convenient service: various payment methods and fast delivery.

In order to buy an electric valve for a washing machine, you need to find it in our catalog, select the part for the desired model of the machine, add it to the cart and place an order. If you have any difficulties, contact the manager at the number listed on the website, he will help solve the problem.

About services

Replacing an electric valve is a difficult job, and if done incorrectly, the entire mechanism will fail. If you do not have experience in repairing washing machines, then it is better to entrust it to a specialist. Our company employs specialists with extensive experience, they will help you:

• accurately identify the cause of the malfunction and select a rational method for eliminating it;
• select a suitable part;
• dismantle the old part and install a new one.

We provide services at reasonable prices and guarantee all types of work. You can find out more about the services and leave a request to call a specialist by calling the phone number listed on our website.

How to check the water supply valve in a washing machine

But, like any other part in a washing machine, the valve can fail. If this happens, your washing machine will stop drawing water. In order to check the valve, you need to perform the following steps:

• The first thing you need to check is whether the valve is clogged ; to do this, unscrew the water supply hose and pull out the mesh filter. Clean it.
• Remove the valve from the washing machine and connect the water supply hose to it, open the water supply tap. The valve must not leak water. Next, you need to alternately apply 220V voltage to each section . Depending on which section you apply current to, the valve should operate and water should flow from the corresponding tube. If one of the washing machine valve coils does not work, it means it is faulty.
• You can also check the functionality of the valve coil using a multimeter; to do this, measure its resistance, if it is in the region of 2-4 kOhm, then the coil is in order, otherwise it is not working.

Where to start

First you need to make sure that it is the supply valve of the washing machine that has failed. Signs of a breakdown are the entry of water into the tank when the equipment is turned off, or, conversely, its absence when the washing is started.

Before disassembling the washing machine, you must:

• disconnect the unit from the power supply - remove the plug from the socket;
• turn off the water at the inlet tap;
• prepare a basin and a rag to clean up spilled water;
• move the machine away from the wall and place it in a free place with access from all sides;
• Put on dry shoes with waterproof soles.

If there is water left in the washing machine, it should be removed through the drain hose next to the filter, or by unscrewing the plug (the compartment is located in front, at the bottom). To do this, use a low basin or other container. Remaining moisture spilled on the floor is wiped off with a rag or rag.

Avoid contact between electricity and water

The water distribution valve is driven by an electromagnet (solenoid) designed to operate from a 220-volt network. Electric shock at 220 V is deadly to humans. A burn appears at the point of contact and death is possible.

Tools

Disassembly and diagnostics of the valve is carried out:

• Phillips and flat-head screwdrivers (we recommend using a screwdriver);
• pliers;
• pliers with sharp jaws;
• multimeter.

All parts can be easily removed without the use of force, especially if there are plastic latches.

How to replace the water supply valve in a washing machine

If you have a new valve and are ready to change it yourself, then follow the instructions below. Before you begin the repair, you need to find the place where the inlet valve is located in the washing machine. Typically, manufacturers place it at the top of the washing machine, and in top-loading machines at the bottom.

• First, turn off the power to the washing machine. Turn off the water supply and unscrew the inlet hose from the valve.
• In order to get to the valve , if it is on top, remove the top cover of the washing machine; to do this, unscrew the two screws located at the back, slide the cover back and remove. For top-loading machines, you need to remove the side wall.
• Now you need to disconnect all wires from the valve, as well as hoses . The hoses are secured with clamps that can be reused. In some cases, the clamps are disposable, then take care of new ones in advance.
• Now you need to detach the valve itself from the body of the machine . It can be tightened with bolts or secured with latches. You need to either unscrew the retaining bolts or bend the latches.
• Once the valve is unscrewed, it must be twisted to remove it.

Installing the washing machine fill valve is done in the reverse order. After you put everything in place, check its functionality by starting a washing program.

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How to call a specialist

There are two ways to order repairs. By phone

from 8.00 to 22.00 daily. Or using an online application - at any time.

When calling a specialist, you must inform:

• Make and, if possible, model of your washing machine. For example, Bosch Maxx 4 or Indesit Wiun 102. Look for the model name on the sticker on the body of the washing machine, usually it is located on the back. The information is needed so that the technician takes with him a new valve suitable for your SMA. If you have already bought it yourself, then simply indicate the brand.
• Convenient repair time.
• Your address, name and telephone number.

The master will call you in the morning on the appointed day to confirm the time of arrival.