Owners of household appliances are often faced with a situation where Indesit refrigerator makes characteristic clicking sounds during operation. This acoustic phenomenon can occur both during an active cooling cycle and during moments of rest when the device is simply standing in the network. For many users, these sounds become a source of concern, forcing them to assume the presence of a serious malfunction or the imminent breakdown of an expensive unit.
However, extraneous noises do not always indicate a critical breakdown. Refrigeration equipment is a complex unit in which mechanical, electrical and thermodynamic processes operate simultaneously. Understanding the nature of sound helps to distinguish the normal functioning of a system from a real threat of equipment failure. In this article, we will analyze in detail the main sources of clicks and methods for diagnosing them.
It is important to consider that compressor and related systems operate under high pressure and with constant temperature changes. These physical factors inevitably affect the materials of the housing and internal components. Below we will look at exactly which parts can make sounds and how to determine whether a technician requires intervention or DIY repairs.
Natural physical processes and expansion of materials
The most common and absolutely safe cause of clicking is thermal expansion and contraction of materials. The internal chamber of the refrigerator and its body are made of various types of plastic and metal, which have different expansion coefficients. When there is a sudden change in temperature, for example, immediately after turning off the compressor or when loading warm food, the walls can deform at the micro level, producing a sound.
These sounds often resemble crackling or short clicks, which can be repeated in series. Plastic panels Inside the freezer compartment are especially sensitive to cold. If you hear such sounds in the first hours after defrosting or turning on the device, then most likely this is a normal reaction of materials to temperature stress.
It is worth noting that new models Indesit refrigerators use thinner plastic for the internal lining, which can make such sounds more audible. Over time, after several heating and cooling cycles, the materials adapt and the frequency of such noises usually decreases. This does not require any repairs.
Operation of the thermostat and electrical automation
The second most common source of sounds is electrical automation that controls the temperature regime. Thermoregulator (thermostat) is mechanical or electronic a device that opens and closes an electrical circuit depending on the temperature in the chamber. In mechanical models, this process is accompanied by a distinct click, which can be heard even through the noise of a running motor.
When the temperature inside the chamber reaches the set value, the thermostat sends a signal to turn off the compressor. At this moment a click is heard. After some time, when the air heats up, the thermostat will turn on the unit again and the click will repeat. This is the normal operation of the system, indicating that automatic control functions correctly.
How to distinguish the sound of a thermostat from others?
The sound of the thermostat is always timed to the moment the compressor is turned on or off. If the click is heard at random times while the motor hums evenly, the source is most likely elsewhere.
In more modern models with electronic control, sensors and controllers perform the role of a thermostat. However, even there there may be relay elementss that switch high power currents. Starting relays can also produce clicks if they are made in a mechanical format, although in modern units they are increasingly being replaced with silent electronic analogues.
Problems with the starting relay and starting the compressor
The situation changes dramatically if the clicks become frequent, rhythmic and accompanied by attempts to start the engine, which immediately stalls. In this case, there is a high probability of malfunction start relay. This component is responsible for supplying a starting pulse to the motor windings. If the relay is worn out or faulty, it may endlessly try to start the compressor, emitting a series of loud clicks.
With such a breakdown, the refrigerator may operate jerkily: a few seconds of buzzing, then a click and silence, then another attempt to start. This is a dangerous operating mode, since electric motor it does not have time to reach the operating mode, but constantly receives current overloads. Long-term operation in this mode can lead to burnout of the compressor windings.
You can diagnose a problem with the relay visually if you remove the back panel at the bottom of the refrigerator. Often traces of soot or melted plastic are visible on the relay body. Replacing this element is one of the most common procedures refrigerator repairwhich, if you have the skills, can be done independently by selecting an analogue according to the marking.
Faults of the compressor and motor
The most alarming signal is clicks coming directly from itself compressor. If you hear metallic knocks or clicks inside the motor housing while it is running, this may indicate wear on the internal mechanical parts: piston group, valves or bearings. In contrast to the soft clicks of plastic, these sounds have a ringing, metallic tint.
Another reason is a violation of the compressor fastening. The motor is mounted on shock-absorbing springs or rubber feet that dampen vibration. Over time rubber products they dry out, and metal fasteners may weaken. As a result, the compressor housing begins to vibrate during operation and touches the tubes or walls of the refrigerator body, creating a characteristic knock.
☑️ Primary diagnostics of the compressor
If the problem lies inside the sealed compressor casing, then repairs are often economical inappropriate. Replacing a compressor requires expensive refrigerant handling equipment and a qualified technician. In such cases, owners often decide to purchase new equipment, especially if the unit has been in service for more than 10 years.
The influence of improper installation and operation
Often the cause of extraneous sounds is a banal violation of installation rules. If the refrigerator stands unevenly, the vibration from the running motor is transmitted to the floor and amplified by resonance. This can cause rattling and clicking noises at the joints of shelves, drawers or door handles. An unstable position also leads to misalignment, due to which the door may not close tightly or touch the body.
Improper operation also contributes. Loading hot products into the chamber causes a sharp increase in the load on the system, which provokes more active operation of the compressor and intensive expansion of materials. In addition, ice freezing on the evaporator (in No Frost models this may not be visible visually) leads to the fact that the fan blades begin to touch the ice crust, producing crackling and clicking noises.
It is also important to check whether the walls of the refrigerator are touching nearby furniture or walls. The gap should be at least 5-10 cm for normal air circulation. If the refrigerator is moved close to the cabinet, vibration will be transmitted to neighboring objects, creating the illusion of a breakdown inside the device itself.
Comparative table of noise sources
To simplify diagnostics, we suggest using a table that systematizes the main types of sounds and their probable causes. This will help you quickly navigate the nature of the noise.
| Sound type | Probable cause | Danger | Actions |
|---|---|---|---|
| Deaf crackling of plastic | Thermal expansion | No | Observation |
| Clear click when stopping | Thermoregulator | No | Normal |
| Frequent clicks and humming | Start relay | High | Replacement relay |
| Metal knock | Compressor wear | Critical | Motor replacement |
| Crackling and grinding | Fan or ice | Average | Defrost/Cleaning |
As can be seen from the table, diagnostics begins with determining the nature of the sound. Harmless clicks of plastic do not require intervention, while problems with the electrics or mechanics of the motor need an urgent solution. Ignoring signs of a faulty start relay can lead to failure of the compressor itself, which will significantly increase the cost of repairs.
Is it possible to use a refrigerator with a faulty relay?
Technically, it will cool, but with long interruptions. However, the risk of burning the compressor or causing a short circuit is very high, so operation is not recommended.
When you need to call a specialist
There are a number of signs in which self-repair is not only ineffective, but also dangerous. If you notice that Indesit refrigerator it has stopped freezing and the clicking has become constant, this indicates a serious breakdown. Also a reason to call for service is the appearance of a burning smell, melting of wires or visible sparks in the compressor area.
You should not try to open the sealed circuit yourself or change the compressor without the appropriate equipment. Refrigerant it is under pressure, and inappropriate handling may cause injury or damage to the ozone layer (in older models). In addition, to charge the system, vacuuming is required, which is only possible in a workshop.
⚠️ Attention: If clicks are accompanied by a complete absence of cold for 4-6 hours, immediately unplug the device and remove all products. Continued operation of a faulty compressor can lead to a fire.
A qualified specialist will conduct a complete diagnosis of the electrical circuit, check the winding resistance and pressure in the system. Often the exact cause can only be determined after removing the back panel and taking measurements with a multimeter. Professional repair guarantees restoration of factory operating parameters and safe operation.
Is it normal if the refrigerator clicks immediately after being plugged in?
Yes, this is normal. When first turned on, the thermostat closes the circuit, starting the compressor. This initial click indicates the serviceability of the electrical control circuit.
Can the refrigerator click if it is empty?
Yes, it can. The lack of products (thermal mass) results in more frequent on-off cycles as air cools and heats up faster than solids. This increases the frequency of the thermostat clicks.
Does the network voltage affect the appearance of clicks?
Low or unstable voltage can make it difficult to start the compressor, causing the start relay to operate repeatedly. This causes a series of clicks. In such cases, it is recommended to use a voltage stabilizer.
Why does an old refrigerator click louder than a new one?
Over time, shock absorbers wear out, lubricants in moving parts dry out, and fasteners weaken. All this leads to increased vibration and louder sound of operating processes, including relay clicks.
Do you need to change the refrigerator if it starts clicking?
Not necessarily. If the problem is in the thermostat or relay, replacing these parts is inexpensive and extends the life of the unit. The decision to replace is made only if the compressor breaks down or the tightness of the circuit is broken.