The situation when a loved one Pozis refrigerator suddenly stops cooling always takes you by surprise, threatening food spoilage. The owner immediately begins to wonder: why does the Pozis refrigerator not work and is it possible to correct the situation independently without calling a technician? Often, panic forces you to take unnecessary actions, but a calm analysis of the symptoms helps to determine the root of the problem even before the arrival of a specialist.
Russian brand Pozis has established itself as a manufacturer of reliable equipment, however, even high-quality units are subject to wear and tear or manufacturing defects. Faults can be associated with either a simple power surge or serious damage compressor or a refrigerant leak. Understanding the operating principle of your model is the first step to successful repair.
In this article we will analyze in detail the main reasons why equipment stops freezing, and consider the algorithm of actions for each specific situation. If you hear clicks, but the engine does not start, or, conversely, the unit hums, but there is no cold - these are different scenarios that require a unique approach. We will help you systematize your knowledge and make the right decision.
Primary diagnosis: why the unit is silent or hums
Before disassembling the back wall or looking for a service center, you need to carry out a basic check. Often the reason the refrigerator does not turn onlies in external factors. Check that the door is tightly closed, that the plug is not knocked out of the socket, and that there is voltage in the network. Sometimes it is enough to just wait 10-15 minutes if the surge protection has tripped.
Pay attention to the nature of the sound that the equipment makes. If you hear a low hum that ends abruptly with a click, this may indicate a problem with the start relay or the motor itself. In the case where compressor does not make any sounds at all, the problem may lie in the thermostat or control module. It is important to listen: is the fan working (if the model is No Frost) or is the movement of freon in the tubes heard?
Do not ignore visual signs. Inspect the door seal for cracks and make sure it fits tightly to the body. If warm air gets inside, temperature mode it is disrupted, and the unit begins to wear out, trying to compensate for the loss of cold. This is a common reason why the refrigerator works, but does not cool food to the desired temperature.
⚠️ Attention: If you smell a burning smell or see sparking in the rear grille area, immediately unplug the appliance from the power supply. Further operation in this condition may lead to a fire or complete failure of the electronics.
Problems with starting the compressor and starting relay
One of the most common reasons why Pozis refrigerator does not work is the failure of the starting relay. This small element is responsible for starting the compressor engine. If the relay is faulty, the motor may hum, twitch, but not start, or turn on for only a few seconds, after which the thermal protection is triggered.
The process of replacing the relay does not require complex equipment, but requires caution. First you need to remove the back cover, disconnect the terminals and carefully dismantle the old device. Start relay is selected strictly for the compressor model, so it is important to know the engine markings. An error in choosing a spare part will lead to the protection system turning off the unit again.
☑️ Diagnostics of the start relay
If after replacing the relay the situation has not changed, and compressor still does not start or works intermittently, the problem may be deeper. Perhaps an interturn short circuit in the motor windings or jamming of the piston group. In such cases, independent repair is practically impossible; replacement of the entire unit or its professional overhaul is required.
How to check the starting relay with a multimeter?
To check, you need to “ring” the relay contacts. If you hear a ball knocking when you swing the relay (in a relay with a posistor), this is normal. However, if the multimeter shows an open circuit or, conversely, a short circuit where there should not be one, the part requires replacement. Also pay attention to the condition of the contacts: blackening indicates burning.
Refrigerant leak and capillary system clogged
When Pozis refrigerator it stops freezing, but the compressor runs continuously and is very hot, there is a high probability of a freon leak. The refrigerant circulates in a closed circuit, and any leakage - a microcrack in the evaporator or damage to the tube - leads to its gradual disappearance. Without freon, heat is not removed from the chambers.
Another problem with similar symptoms is clogging of the capillary tube. An ice or oil-paraffin plug may have formed in the system, which blocks gas circulation. In this case, the compressor also works at its limit, trying to push the refrigerant, but the cooling capacity drops to zero. It is extremely difficult to determine the exact location of a blockage or leak without special equipment (leak detector, pressure gauge station).
Symptoms of a leak or blockage often appear gradually. At first, you may notice that temperature the temperature in the chamber has become slightly higher than normal, and the food has begun to spoil faster. Then the unit starts to turn on more often and work longer. At the final stage, when the freon leaves completely or the plug becomes critical, the cold disappears completely, and the rear wall of the compressor may swell from overheating.
| Symptom | Probable cause | Actions |
|---|---|---|
| Compressor is hot, no cold | Freon leak | Call a technician to find a leak and refill |
| Intermittent humming, clicking | Capillary blockage | Purge the system or replace the filter-drier |
| Frost only at the entrance to the evaporator | Partial blockage | Diagnostics of pressure in the system |
| The pipes at the back are cold | Lack of freon | Sealing and charging with refrigerant |
Faults in the thermostat and electronic control module
In models with mechanical control for maintaining the temperature responds thermostat (thermostat). If it fails, the compressor's power circuit may not close, and the refrigerator simply will not turn on. Or, on the contrary, the contacts “stick”, causing the unit to freeze until a fur coat forms. You can check the thermostat by closing its contacts directly: if the compressor starts working, then the problem is in the sensor.
Modern models Pozis are often equipped with an electronic control module. This is the “brain” of the refrigerator, which reads readings from sensors and controls all components. If electronic unit burnt out due to a power surge or oxidation of contacts, the equipment may behave unpredictably: turn on chaotically, show codes on the display, or completely ignore user commands.
Diagnostics of an electronic module requires special knowledge and often - replacing the entire board or resoldering specific elements (relays, capacitors). If you see traces of burning on the board, swollen capacitors, or smell burnt plastic, self-repair without experience in radio electronics can aggravate the situation. In such cases module replacement is the most reliable solution.
⚠️ Attention: Electronic modules are sensitive to static electricity. When touching the board, always use an antistatic wrist strap or first discharge the static charge by touching it to a grounded metal object.
Why the upper or lower chamber does not freeze
Often users are faced with a situation where one chamber is working normally, but in the other the temperature is higher than normal. If Pozis refrigerator it does not freeze in the upper compartment, but freezes in the lower compartment (or vice versa), this may indicate problems with the cold removal system. In two-compressor models, the problem is most likely local to one of the circuits. In single-compressor systems, the air channels may be clogged or the damper may be faulty.
In systems No Frost a fan is responsible for circulating cold air. If it stops due to icing or engine failure, the cold stops flowing into the chambers, although the evaporator may be covered with frost. It is also worth checking the condition of the defrost heaters: if they do not work, the evaporator becomes overgrown with ice, blocking the air supply channels.
Another reason is improper loading of products. If you pack the shelves tightly, blocking the ventilation holes, natural or forced convection is disrupted. Air exchange - a key factor in uniform cooling. Leave space at the back wall and between the products for free circulation of flows.
Error codes and their interpretation for Pozis models
Many modern models are equipped with a self-diagnosis system, which displays error codes on the display or signals them by flashing indicators. Understanding these signals greatly speeds up troubleshooting. For example, a flashing temperature indicator may indicate a sensor failure or a critical increase in temperature in the chamber.
Although the exact interpretation depends on the specific series Pozis, there are general patterns. Sensor errors (often labeled E1, E2, etc.) indicate an open circuit or short circuit in the measuring element. Errors related to the control module may indicate problems with memory or communication between nodes.
If your refrigerator shows an error code that cannot be deciphered according to the instructions, try doing resetting the error. To do this, you often need to unplug the device for 15-20 minutes. If after turning on the error appears again, then the malfunction is of a physical nature and requires replacement of the part.
Frequently asked questions (FAQ)
Why does the Pozis refrigerator turn on and immediately turn off?
This is a classic symptom of a faulty start relay or problems with the compressor windings. The motor tries to start, the current increases, the thermal protection is triggered, and the unit stalls. It is necessary to diagnose the starting device and check the compressor for an interturn short circuit.
Is it possible to use a Pozis refrigerator if it is on the balcony in winter?
Operation at temperatures below +5°C (for climate class SN-N) or above +32°C (for class T) is not recommended. The oil in the compressor thickens in the cold, which leads to dry starts and rapid wear, and in the heat the system does not have time to release heat. This may result in denial of warranty service.
How often do you need to defrost the Pozis refrigerator?
Models with the system No Frost do not require manual defrosting, it is enough to wash them 1-2 times a year. Models with a drip system (“crying evaporator”) also do not need frequent defrosting, but it is recommended to carry out preventive maintenance 1-2 times a year for hygiene and checking drains.
What to do if water appears inside the refrigerator?
Check the drainage hole in the back wall of the chamber. It could become clogged with crumbs or ice. Clean it carefully with a special stick or soft wire. Also make sure that the refrigerator is installed level, with a slight tilt back, so that the water flows by gravity into the tray.