The situation when the refrigerator Polyus stops freezing often catches by surprise, threatening food damage and demanding immediate intervention. The first sign of a malfunction is an increase in temperature in the chamber, the appearance of condensation on the walls, or a complete stop of the unit. The owner must remain calm and consistently analyze the condition of the equipment in order to exclude simple causes before calling a technician.
Often the problem lies not in the breakdown of expensive components, but in a banal violation of operating rules or power failures. Primary diagnosis helps save time and money, allowing you to independently eliminate minor faults. If the refrigerator Polyus hums, but does not freeze, or vice versa - there is silence, the algorithm of actions will vary depending on the symptoms.
In this article we will analyze in detail the main causes of cooling system failure, methods of identifying them and methods of recovery performance. You will learn how to check the thermostat, assess the condition of the compressor and understand when you can’t do without the help of a specialist. A competent approach to diagnostics is the key to successful repairs.
Primary diagnostics and external factors
Before disassembling the unit or looking for spare parts, you need to make sure that the refrigerator is connected to the network properly. Check whether the power indicator is on, if provided by the design of the model Pole. Sometimes the power cord may be pinched or the outlet may be faulty. Try plugging another electrical appliance into the same outlet to eliminate problems with the electrical network.
It is important to assess the temperature in the room. If the refrigerator is located in an unheated country house or in a garage where the temperature has dropped below +5°C, the compressor may not start. This is due to the viscosity of the oil in the system and the operating characteristics of the thermostat. Normal operation possible only in the climate class specified in the instructions.
⚠️ Attention: Never try to start the refrigerator at a temperature below the minimum permissible specified in the passport. This can lead to water hammer in the compressor and its final failure.
It is also worth checking the tightness of the door. If the rubber band is worn out or dirty, the cold will evaporate and the compressor will run idle, unable to cope with the heat flow. Do a test with a sheet of paper: hold it in the door and try to pull it out. If the sheet is removed easily without resistance, the seal is broken. seal worn out or dirty, the cold will evaporate, and the compressor will run idle, unable to cope with the heat flow. Do a test with a sheet of paper: hold it in the door and try to pull it out. If the sheet is removed easily without resistance, the seal is broken.
Analysis of the operation of the compressor and start relay
The most important component of the refrigerator is compressor. If the refrigerator Pole doesn't freeze, listen to the sounds it makes. A dull hum that turns into a clicking sound and silence often indicates problems with starting the engine. In this case, the culprit may be the start-up relay.
The relay is responsible for supplying voltage to the motor windings at the time of start. Over time, the contacts may burn out and the bimetallic strip may lose its properties. Replacing this element is one of the most common and affordable repair procedures. For models Pole relays of the P-1, P-2 or P-3 series are often used, which can be found in spare parts stores.
If, when turned on, a quiet hum is heard, lasting a few seconds, and then a click is heard and the motor goes silent, this is a sure sign. jamming compressor or winding breakage. In such a situation, further startup attempts may be futile. However, sometimes installing a more powerful starting device helps, but this is a temporary solution.
How to check the relay yourself?
To check the relay, you need to remove it from the compressor and shake it. If a ringing sound is heard inside (as if from a broken bulb), it means that the posistor or mechanical part is damaged, and the relay requires replacement. You can also “ring” the contacts with a multimeter.
The table below shows the main symptoms and their probable causes in the starting system:
| Symptom | Probable cause | Difficulty of repair |
|---|---|---|
| Silence, no light | No power, cord burnt out | Low |
| Buzzing for 5-10 seconds, clicking, silent | Faulty start relay | Medium |
| Humming constantly, does not freeze | Freon leak, compressor failure | High |
| Humming, slightly freezing | Clogged capillary, low freon | High |
Problems with the thermostat and sensors
The thermostat (thermostat) is the “brain” that commands the compressor to turn on or off. If the refrigerator Pole is no longer cold, but the compressor is working properly and is silent, most likely it is the problem. Mechanical thermostats lose sensitivity over time or become stuck in the “off” position.
To test the thermostat in mechanically controlled models, you can close its contacts directly. If after this procedure the compressor starts working, then the temperature regulator is subject to replacement. In modern electronically controlled models, this is done by sensors (thermistors), which are less likely to fail, but their diagnosis requires a multimeter.
⚠️ Attention: Before any manipulations with electrical circuits, be sure to unplug the refrigerator! Working under voltage is deadly.
Often users accidentally change the settings by turning the control knob to the extreme position. Make sure that the regulator is not at minimum or in the “0” position. It is also worth checking whether ice has frozen on the capillary tube of the thermostat, if it goes into the chamber - this may distort the temperature readings.
☑️ Diagnostics of the thermostat
Refrigerant leak and system blockage
If the compressor refrigerator The pole works continuously, hums very loudly and gets very hot, but there is no cold, these are classic signs of a freon leak or a clogged capillary tube. Refrigerant is a working fluid that circulates through the system, removing heat. Without it, cooling is impossible.
Leaks most often occur in the soldering areas of the evaporator tubes or on the door perimeter heating circuit (where the metal rusts). It is difficult to notice a leak visually; often it is indicated only by oily spots under the refrigerator or in the area of the engine compartment. It is impossible to find and eliminate leaks on your own without special equipment (leak detector, vacuum pump, gas station).
Clogging of the system usually occurs due to moisture trapped inside the circuit or oil breakdown products. In this case, there is freon, but it does not circulate. A characteristic sign of a blockage is heating of the condenser (grid at the back) only in the initial part, while the rest of the part remains cold. Capillary tube in this case, requires cleaning or replacing the filter drier.
Evaporator and fan malfunctions (for No Frost)
In refrigerators Polyus with a system No Frost (or “Crying evaporator” in some modifications), the fan is responsible for circulating cold air. If it stops due to icing or engine failure, the cold stops flowing into the main chamber, although the temperature in the freezer may remain.
A common reason is failure of the defrost system. The heating element (heating element), defrost timer or defrost sensor may burn out. As a result, a “coat” of ice grows on the evaporator, which blocks the air ducts. The fan begins to hum, touching the ice, or stops completely.
For diagnostics, you need to defrost the refrigerator for 24 hours. If, after complete defrosting, the unit began to freeze, but after 1-2 days the problem returned, it means that the defrosting system is not working. It is necessary to check the integrity of the heating element and the resistance of the sensors. In models Polyus there are often mechanical defrost timers that are easy to replace.
When you need to call a specialist
There are a number of situations when DIY repairs are not only ineffective, but also dangerous. If you have diagnosed a freon leak, you need to evacuate the system and accurately charge it with a certain type of refrigerant (R134a or R600a). Isobutane (R600a)used in many modern models is explosive, and working with it requires a license and special tools.
A master is also needed if the compressor housing is broken, the motor winding is burned out, or complex soldering of copper tubes in hard-to-reach places is required. Attempts to “revive” the compressor by applying increased voltage or tapping often lead to final breakdown of the unit.
⚠️ Attention: Opening a sealed circuit without subsequent evacuation of the system will lead to moisture and air entering, which is guaranteed to cause the compressor to fail in the near future.
The cost of calling a specialist is often lower than purchasing a new compressor and attempts to repair it yourself with the risk of damaging other components. Professional diagnostics using pressure gauges and a leak detector takes little time and gives an accurate answer to the question of why your Polus is not freezing. Self-repair is possible by replacing thermostats, relays, fans and seals. Filling with freon and repairing the compressor is a task exclusively for certified specialists. Pole.
Prevention and operating rules
In order for the refrigerator Polyus to serve for a long time and not require frequent repairs, it is important to follow the operating rules. Regular defrosting (even for No Frost systems, at least once a year) helps to avoid the accumulation of ice in hard-to-reach places and reduces the load on the compressor.
Do not put hot products in the chamber - this causes a sharp jump in temperature and humidity, causing the equipment to wear out. It is also important to leave a gap of 5-10 cm between the back wall of the refrigerator and the wall of the room for normal air circulation around the condenser.
Keep the rear condenser grill clean. Dust and pet hair act as a heat insulator, preventing the freon from cooling. You need to vacuum the grill at least once every six months. These simple measures will extend the life of your refrigerator for many years.
Frequently asked questions (FAQ)
Why does the Polus refrigerator work, but the upper chamber does not freeze?
Most likely, the cold air supply channel from the freezer to the refrigerator compartment is clogged. This often happens when the defrost system is malfunctioning (No Frost) or when the load of products is too dense, blocking the openings. Try to completely defrost the unit within 24 hours.
A click is heard and the refrigerator goes silent. Is this dangerous?
This is a sign that the thermal protection is tripping or the start relay cannot start the compressor. Long-term operation in this mode is dangerous due to overheating of the motor windings. It is necessary to disconnect the device from the network and call a technician to diagnose the start relay and compressor.
Is it possible to replace the thermostat in the Polyus refrigerator yourself?
Yes, if you have basic skills in working with electricity and tools. The thermostat is a mechanical unit that is mounted on a bracket. The main thing is to choose an analogue with the same characteristics (temperature range, capillary tube length) and connect the wires correctly, remembering their location.
How long should the refrigerator cool down after defrosting?
After turning on the defrosted refrigerator Polyus it should gain temperature within 2-4 hours. If after 5-6 hours of operation of the compressor the cold does not appear, and the walls of the chamber remain warm, then there is a technical malfunction.