The appearance of extraneous sounds in the operation of household appliances always causes concern for the owner. This is especially true for refrigerators, which must operate silently and reliably. If your Pozis refrigerator started to make loud clicks, this is a sure sign that a failure has occurred in the system or some part has worn out.
Ignoring such signals can lead to complete failure of the unit. At best, you will get away with replacing an inexpensive element; at worst, you will need to replace the compressor. Let's figure out why this happens and what you can do yourself.
In this article we will take a detailed look at the mechanics of the device, list the main malfunctions and give clear diagnostic instructions. You will learn to distinguish between normal operating noise and dangerous sounds that require the intervention of a technician.
The principle of operation of the starting relay and compressor
To understand the nature of the sound, you need to understand the design of the motor. The heart of the refrigerator is compressor, which drives the refrigerant through the system. A special unit is responsible for its launch - the start relay.
It is in this unit that the cause of the clicks most often lies. Inside the relay there is an inductor and a movable core. When voltage is applied, the core retracts, closing the contacts and starting the motor. If the launch is successful, the current drops and the core falls down under the influence of gravity, opening the starting winding.
This mechanical process is accompanied by a characteristic sound. When in good condition it is quiet and barely noticeable. However, if the mechanism is worn out or dirty, the sound becomes loud and sharp.
How exactly does an induction relay work?
At the moment of switching on, the current is high, the magnetic field draws in the core, closing the contacts. As the motor rotor picks up speed, the current drops, the field weakens, and the core falls, breaking the circuit. This cycle is repeated at each start.
It is important to note that the models Pozis use both old induction and more modern electronic relays. The principle of their operation is similar, but the reliability may differ. Understanding this difference will help you more accurately diagnose the problem.
The main reasons for frequent clicks and startup failures
When the refrigerator clicks repeatedly (repeatedly) and does not start, this means that the cycle “attempt to start - activation of the protection” is repeated endlessly. The compressor tries to start, the relay clicks, but the motor does not start, and the thermal relay breaks the circuit.
There are several key reasons for this situation. Firstly, this is the jamming of the compressor itself. Mechanical wear of the piston group or lack of lubrication leads to the fact that the motor physically cannot turn.
Secondly, the problem may be in the electrical part. The motor windings could burn out due to a power surge. In this case, the relay will click, trying to start the dead unit, until the thermal protection is triggered.
The third and most common reason is a malfunction of the starting relay itself. The contacts could burn out and the mechanism could stick. In models Pozis this happens quite often after 5-7 years of operation.
⚠️ Attention: If you hear a series of clicks, followed by a hum, and then silence for several minutes, immediately unplug the refrigerator! Continuing to operate in this mode is guaranteed to burn out the compressor.
Diagnostics of a faulty start relay
If you suspect that the relay is at fault, it needs to be checked. This is an inexpensive part and replacing it often solves the problem. First you need to get to the compressor by removing the rear protective panel of the refrigerator.
The relay is usually mounted on the side or bottom of the compressor and covered with a plastic box. Carefully remove the clips and remove the assembly. A visual inspection can immediately give an answer: the presence of soot, melted plastic or a burning smell indicates a breakdown.
However, external signs are not always present. To check operation, you can gently shake the relay. If a knock is heard inside, it means the mechanism is destroyed. You can also ring the contacts with a tester, but this requires skills in working with a multimeter.
- 🔍 Visual inspection: Look for traces of carbon deposits on the contacts and melting of the case.
- 🔊 Test for hearing: Shake the part - the internal parts should not dangle.
- ⚡ Check with a multimeter: The resistance between the contacts must correspond to the norm (usually close to zero in the closed state).
When purchasing a new part, be sure to check the markings. For Pozis refrigerators relays of certain series are suitable, and installing an unsuitable model can lead to repeated breakdown.
☑️ Checking the relay
Problems with the compressor and refrigerant
If replacing the relay does not help, the situation becomes more serious. Perhaps it itself failed compressor. This is the “heart” of the refrigerator, and repairing it at home is almost impossible - replacement is required.
Another reason for clicking is a freon leak. When there is little refrigerant in the system, the compressor idles, trying to gain temperature. The thermostat does not give a command to stop, and the motor overheats, after which the thermal protection is triggered.
In this case, a click will signal an attempt to turn on the overheated motor. It is difficult to determine a leak on your own, but you can pay attention to the swelling of the back wall of the refrigerator or oily spots near the compressor.
| Symptom | Probable cause | Solution |
|---|---|---|
| Single click at start | Normal (relay operation) | Not required |
| Series of clicks, no cold | Faulty starting relay | Replacement of relay |
| Humming and clicking, the engine is hot | The compressor is jammed | Replacing the compressor |
| There are clicks, there is no cold for a long time | Freon leakage | Searching for leaks and refueling |
It is important to distinguish between these conditions, since the cost of repairs is radically different. Replacing the relay will not cost much, while replacing the compressor or refilling with freon will require calling a technician and significant costs.
The influence of the thermostat and wiring
Do not discount other elements of the control system. Thermostat (thermostat) is responsible for turning the refrigerator on and off. If its contacts are burnt or the mechanism is stuck, it may make clicking sounds.
Often users confuse the sound of the compressor relay with the sound of the thermostat. The latter clicks when the set temperature is reached. If this sound becomes louder or more frequent, the thermostat may be faulty or incorrectly set.
It is also worth checking the electrical wiring. Poor contact in an outlet, extension cord, or refrigerator plug can cause sparking and a characteristic cracking sound. This is especially dangerous as it can lead to a fire.
Inspect the power cord plug: if it is blackened or melted, the problem lies in the electrical outlet or connector. In models Pozis with an electronic control panel, failures can be caused by faulty control modules.
⚠️ Attention: Before checking the wiring and contacts, be sure to unplug the cord from the outlet! Working with live electricity is deadly.
If clicks come from inside the camera and not from behind, most likely it is the sound of expanding plastic or the No Frost shutter being activated. But when it comes to classic Pozis models, the sound almost always comes from the motor-compressor.
When you need to call a technician
There is a clear line between do-it-yourself repairs and professional service. If you have replaced the relay, checked the socket, but Pozis refrigerator continues to click and does not freeze, it’s time to call a specialist.
A specialist is needed if work with the refrigeration circuit is required. This includes soldering the copper pipes, evacuating the system, and charging with freon. Without a license and equipment, such work cannot be performed.
Also, the help of a professional is needed if an interturn short circuit of the compressor windings is suspected. Diagnosis of this defect requires special instruments. Independent attempts to “unwedge” the motor often lead to final failure.
- 🛠️ Complicated repairs: Replacement of the compressor, filter-drier, soldering of pipelines.
- ❄️ Problems with refrigerant: Freon leaks, the need to search for micro-holes.
- 🔌 Electronics: Malfunction of the control module in modern models.
A timely call to a technician can save the equipment. If the compressor ran for a long time in start-stop mode, it could overheat. Professional diagnostics will help assess the residual life of the unit.
Is it worth repairing an old refrigerator?
If the refrigerator is more than 10-12 years old and the compressor has burned out, it is more economical to buy a new one. The cost of replacing the motor and refilling can be up to 70% of the price of a new budget refrigerator.
Prevention and operating rules
To avoid clicks and breakdowns in the future, it is important to operate the equipment correctly. Do not place the refrigerator close to the wall; provide clearance for ventilation. Overheating is the main enemy of the compressor.
Defrost the chamber regularly if you have a model with manual defrosting. A thick layer of ice causes the motor to work harder, which shortens its service life. For models Pozis with the No Frost system, it is important to clean the drainage hole.
Use a voltage stabilizer if there are surges in your network. Sudden voltage changes often cause failure of the starting relay and motor windings.
Following simple hygiene and maintenance rules will extend the life of your refrigerator. Keep the condenser at the back of the aggregator clean - dust and animal hair impair heat transfer.
⚠️ Attention: Do not try to turn on the refrigerator immediately after defrosting or transporting it. Allow the oil in the compressor to drain and settle (at least 2-4 hours), otherwise water hammer and breakdown are possible.
FAQ: Frequently asked questions
Why does the refrigerator click but does not turn on after defrosting?
Most likely, the thermal protection of the compressor has tripped due to overheating, or the relay is stuck. Let the equipment stand turned off for 3-4 hours. If after turning on the clicks are repeated, but there is no cold, the problem is in the relay or compressor.
Is it normal for the refrigerator to make a click every 20-30 minutes?
Yes, it is normal if at this moment the light comes on or you hear the motor hum. This triggers the thermostat, turning on the compressor to maintain the temperature. If there is a click, but there is no buzzing or cold, this is a breakdown.
Is it possible to repair the Pozis refrigerator relay with your own hands?
The start relay is a consumable item. It is not repaired, but replaced with a new one. It is inexpensive, the replacement process takes 10-15 minutes and does not require special tools other than a screwdriver.
What to do if the plugs come out after a click?
This indicates a short circuit in the compressor or defrost heating element circuit. Stop trying to turn on immediately! Call an electrician or refrigerator repairman, as the problem is in the wiring or serious internal defects.
How much does it cost to replace a relay in a Pozis refrigerator?
The relay itself is inexpensive (usually from 500 to 1500 rubles depending on the model). If you call a specialist, the replacement work will cost about the same amount. Replacing it yourself will save on the cost of a specialist visit.