Replacing the washing machine door lock device

Purpose and definition

The washer hatch locking device is a compact mechanism, where the main element is a mechanical latch and an electric lock. UBL performs the function of a monitoring protective device. This device prevents flooding of the room and injury to a person when the drum rotates.

The device ensures fixation of the hatch when the eye falls into a special cell. When the equipment is turned on, current is supplied to the device, the closure of the contacts blocks the door. Correct operation generates a signal to the machine control unit that it is ready for work. Failure of this unit does not allow starting the washing procedure.

Installation and repair of the lock (UBL) of the Indesit washing machine

Every Indesit automatic washing machine has a hatch locking device (UBL). Such devices securely fix the door while the washing process is in progress, which protects against leaks and eliminates the possibility of getting scalded by hot water (the temperature during programs can reach up to 90 degrees - almost boiling water). After closing the hatch, a characteristic click is heard, and after the wash starts, the lock is completely blocked.

It will be possible to open it only a couple of minutes after the algorithm is completely completed. If the UBL fails, you will have to call a washing machine repairman to open the door.

Resource

Replacing the lock in a washing machine is rarely done due to its high reliability and maximum simplicity of design. The part does not have a specific resource. The unit is designed for the entire operational life of the equipped equipment. The reliability and durability of the device is determined by the quality of the assembly and the raw materials used in its manufacture. When buying a new part, it is better not to save money. Cheap analogues will require frequent replacement, so the benefits will be short-lived.

To extend the life of the UBL, you need to follow the operating rules and handle household appliances with care. No lubrication or other maintenance is required for this unit. It is enough to clean the well cell when visible contaminants get inside.

How to check if it's working properly?

Despite the reliability and durability of the washing machine UBL, experts recommend paying attention to the following reasons for its breakdown:

• long period of operation;
• mechanical wear;
• frequent power surges;
• failure of the locking tongue;
• violation of operating rules and regulations;
• skewed fastening;
• laundry getting stuck between the door and the body;
• triac failure on the central board.

The following signs may indicate a lock malfunction:

• inability to open the hatch after finishing the wash and turning off the device;
• no hatch locking after setting the washing mode and pressing the start button;
• the appearance on the display of an audio and digital message about the failure of the UBL.

Reasons for failure

Natural wear and tear

Even with maximum reliability, over time you will have to replace the hatch lock in the washing machine. Critical resource depletion during long-term operation is inevitable. In expensive models, it is quite difficult to achieve this period; most of the parts will have to be replaced first. And in cheap models of washing machines, the resource exhaustion occurs after 3–5 years of active use. The problem of accelerated wear can be a misalignment of the fastening, deformation of the latch tongue, etc.

Sudden voltage changes

Installing a new UBL in a washing machine is often required due to a short circuit. Frequent and excessive power surges can burn out the contacts, leaving only the mechanical part intact. In some cases, functionality is only partially impaired, allowing for quick repairs.

Violations of operating rules

Service center technicians often have to replace the lock on a washing machine due to inept user handling of the equipment:

• destruction of the mechanism due to clogging of the hole;
• closing the door with great force in the presence of obstacles in the opening;
• an attempt to independently influence the operation of the blocker;
• violation of the startup or shutdown sequence.

Often the cost of replacing a washing machine UBL increases due to the discovery of additional damage resulting from incorrect actions and/or carelessness.

Manufacturing defects

Even modern systems working in conjunction with humans and auxiliary subsystems cannot ensure 100% quality in mass production. Because of this, about 1–2% of repair cases are caused by manufacturing defects. Damage can be expressed in the following moments:

1. Mechanical defects - thickness of some parts that does not meet the standard, defects, weak contacts, soldering.
2. Incorrect assembly - use of parts that do not comply with the regulations, violation of the sequence, unfinished actions.

In such cases, as a rule, the UBL of the washing machine is replaced during the warranty period.

UBL washing machine: principle of operation, types, repair

An automatic washing machine is an indispensable assistant for every housewife, which facilitates the washing process and makes it possible to perform several tasks at the same time. This household appliance is a complex device, the operation of which can be disrupted even by minor breakdowns and malfunctions. Housewives often face the problem of being unable to close the hatch of the machine, which leads to the blocking of the starting system. The cause of this malfunction is a breakdown of the hatch locking device, which can be repaired either independently or with the help of qualified specialists.

Signs of failure

Due to the simplicity of the device, you can determine the breakdown without the help of specialists. The following signs indicate a problem.

The hatch door does not open

The door can be blocked at the moment of closing, either with or without power. It is important to remember that after finishing the wash, the hatch remains locked under standard conditions for 10–180 seconds, depending on the specific model. If the locking does not turn off even after 30 minutes, it means that the bimetallic plate cannot return to its original position or the grips have received critical damage. In such situations, in order to replace the hatch lock in the washing machine, you will have to disassemble part of the structure.

The hatch door does not lock after turning on the machine

The locking mechanism should be activated when the power is turned on, the start button is pressed, if the hatch is previously closed. There are two reasons when the device does not work:

• failure of the electronic module;
• damage to the mechanical lock.

The activation of the module will be indicated by a characteristic click, after which the program will start.

Visible mechanical damage

There is visual damage to the insulation and/or casing on the surface of the device. In this case, the blocker works, but the operation of such equipment is unsafe. The latch may open during the washing process or a voltage breakdown on the housing may occur.

Indesit washing machine lock repair

The UBL may fail at times. This manifests itself either in the fact that it is impossible to close the door tightly, or, conversely, the hatch does not open.

UBL breakdowns occur for the following reasons:

1. As a result of constant thermal exposure, the bimetallic plate loses its properties and fails.
2. Careless handling.

Repairing the lock components is impractical; it is easier to buy a new element and replace the UBL. The cost of such locking devices for Indesit washing machines ranges from 300 to 1500 rubles. But first you need to make sure that the problem is in the lock.

If the device does not operate when the car is closed, you must first open the hatch. To do this, drain and spin, remove the top panel, insert your hand into the lock and move the latch to the open position. Some models of Indesit automatic machines are equipped with an emergency door opening cord, which is located next to the drain filter at the bottom of the machine and usually has a bright color. You need to pull on it.

All work must be carried out with the unit disconnected from electricity. After opening the door, you must remove the rubber cuff. Most Indesit models have a wire ring that secures the casing. You need to feel it with your hand and remove it. After this, the seal can be easily dismantled, gaining access to the lock.

Next, you need to use a screwdriver to unscrew the two fasteners that are located next to the groove for the hook, and pull out the UBL through the gap between the tank and the front wall of the unit. The locking device is disconnected from the wires. After this, it can be disassembled and examined with a multimeter. It is necessary to simulate the situation of the hook entering the groove and create tension on the plate. The mechanism should work; you need to check whether the contacts are working. This determines whether the signal is sent correctly to the electronic module. Replacing a UBL that has become unusable is carried out in the reverse order.

Sometimes the problem of the door not closing tightly lies in the fact that the hook is skewed. This situation is easy to fix. The hatch to which the latch is attached is disconnected from the car body, all the screws on it are unscrewed, and the glass is removed. This way we gain access to the place where the latch is attached. Now the element can be given the correct, stable position.

Indesit service in Perm

If you still have problems with repairing the Indesit washing machine lock, or it did not give the necessary results, our specialists will always solve such problems!

How to unlock the door?

If the lock on the washing machine is broken and the hatch cannot be opened in the usual way, you can get to the part through the bottom. To do this, you will have to dismantle part of the case on the lid - the handle or by removing the front panel. You must first turn off the power and water supply. If the design includes a non-removable handle and/or front panel, carefully place the equipment on its side. Then remove the underbody skid plate, if equipped, and remove the latch by hand. The exact algorithm of actions depends on the specific modification of the washing machine.

Operating principle of bimetallic UBL

UBL is part of the washing machine’s safety system, which helps prevent accidental opening of the door during the washing process. When replacing the sunroof lock

you need to know the device of the node. Structurally, the element consists of 3 components - a retainer, a thermoelement and a bimetallic plate. All this is securely hidden in a plastic casing. To connect the lock and the lock itself, the device includes a metal spring hidden at the bottom of the door.

The washing machine does not start due to a broken UBL. The operating principle of this simple mechanism is based on the action of electric current. When a command to start a washing cycle is received, the control module sends a pulse to the UBL thermocouple. The thermocouple transmits voltage to the biometric plate, which, under the influence of electric current, begins to expand and put pressure on the latch. Breakage of any element in the chain will lead to the impossibility of washing and the need to replace the lock in the washing machine

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Replacing the hatch locking device (UBL) of a washing machine: stages

Each model and series has its own characteristics, while the sequence and number of stages are always identical. It is important to strictly adhere to the maintenance schedule specified by the manufacturer. Stages of work:

• Inspection. You need to make sure that the problem is in the lock. Perform a test run and visually inspect the structure.
• Removing the insulating clamp. The easiest way is to get to the part through the hatch hole. Carefully move the protective clamp in the area of ​​the UBL socket.
• Removing the lock. The lock is fixed with special latches or screws, depending on the model.
• Lock diagnostics. You need to visually inspect the part and check the contacts.
• Installation of a new spare part followed by testing. First connect the contacts, then fix the part in the socket, return the insulating clamp to its place. After replacing the hatch lock in the washing machine, check the serviceability of the unit.

It is important to remember that an automatic washing machine is a complex mechanism that requires certain knowledge, skills and experience to operate. To avoid increased prices for repair work, as well as wasted time and effort, entrust the work to professionals. Specialists of specialized service will quickly eliminate faults with a guarantee! We service all models and modifications of household appliances.

How much does it cost to repair or replace the lock on a washing machine?

The price of repair or replacement of UBL is from 1300 rubles . The cost of the service depends on the brand of the washing machine, its type (vertical or frontal), year of manufacture and model.

The service includes:

• disassembling the machine;
• removal of UBL;
• installation of a new locking device;
• assembly and testing of the machine.

Below is a price list, depending on the brand of washing machine.

Attention! A new part (locking device) and other components necessary for repairs are paid separately and are not included in the price.

* The table shows ONLY THE COST OF THE WORK. When installing UBL from the RemBytTech service, the spare part is paid additionally.