The situation when Pozis refrigerator suddenly stops freezing can take you by surprise, especially if there are perishable foods in the chamber. The first sign of a malfunction is the absence of the characteristic hum of a running motor or, conversely, its continuous operation without reaching the desired temperature. Owners often panic, but most of the problems faced by users of units Pozishave a logical technical explanation and can often be fixed without calling a technician.
In this article we will analyze in detail the main reasons why Pozis refrigerator may stop working, and Let's look at the algorithm of actions for self-diagnosis. It is important to understand that modern models, such as Pozis RK-139 or Pozis RK-168, are equipped with complex electronics, but the basic principles of operation of the compressor and defrost system remain classic. Knowing these principles will help you save time and money.
Before disassembling the unit or calling service, it is necessary to conduct an initial visual inspection and rule out trivial but common problems with the power supply. Sometimes the answer to the question “why the refrigerator doesn’t work” lies in a burnt-out light bulb or incorrect temperature settings. Let's look at the main breakdown scenarios from simple to complex.
Problems with power supply and thermostat
The most obvious, but often ignored reason for the lack of cold is lack of voltage the network or damage to the power cord. If Pozis refrigerator does not make any sounds and the indicators do not light up, check the presence of electricity in the outlet by connecting another device to it. It is also worth inspecting the cord itself for kinks or traces of melting, which is especially important for models that have been in use for more than 10 years.
The second most common culprit is thermostat (thermostat). This device is responsible for turning the compressor on and off depending on the temperature in the chamber. If the thermostat is out of order, it may not “see” that it is warm in the chamber and may not give the command to start the motor. In models with mechanical control, this often leads to a complete stop of the unit.
⚠️ Attention: When checking the thermostat, make sure that the refrigerator is unplugged. Closing the contacts of the thermostat for testing should be done only when the device is de-energized to avoid a short circuit.
Diagnostics of the thermostat in Pozis refrigerators often requires removing the plastic cover covering the lighting lamp or temperature controller. If the compressor starts when the contacts are closed, then the problem is in this unit. Replacing a thermostat is a simple procedure, but requires selecting an analogue with identical temperature characteristics.
- 🔌 Check the tightness of the plug to the socket and the integrity of the surge protector.
- 🌡️ Make sure the handle The thermostat is not in the “0” or “Off” position.
- 🔦 Inspect the interior lamp: if it does not light when the door is opened, there may be a problem in the power circuit.
- 🔧 Carefully turn the thermostat knob, listening for a click (typical for mechanical models).
Faulty start relay and compressor
If compressor refrigerator Pozis tries to start, makes a click, hums for a couple of seconds and goes silent again, most likely the problem lies in the start relay or the motor itself. A starting relay is a small element that supplies an impulse to start the motor windings. Over time, the contacts in the relay oxidize or burn, which makes it impossible to start.
In more serious cases, when the relay is working properly, but the engine still does not start or the engine is humming, we can talk about interturn short circuit in the windings of the compressor or its wedge. Compressor wedge is a mechanical jamming of the moving parts of the motor, often occurring due to exhaustion or lack of oil. In such a situation Pozis refrigerator it can get very hot in the rear part, but not produce cold.
To diagnose the relay, it must be removed from the compressor (after photographing the connection diagram) and shaken. If a rattling sound is heard inside, it means the core is damaged and the relay must be replaced. Also visually inspect the contacts for carbon deposits. Replacing a relay is one of the most common and inexpensive repair procedures.
It is worth noting that in modern models Pozis with inverter compressors, the starting system is designed differently, and there the role of a relay is performed by an electronic control module. Diagnostics of such systems requires special equipment and knowledge in the field of electronics, so self-repair in this case is not recommended.
- 🔊 Listen: if you hear a loud click and silence, check the relay.
- 🔥 Touch the compressor housing: if it is hot, but the cold is not coming, it is possible wedge.
- ⚡ Check the resistance of the windings with a multimeter (skill in operating the device is required).
- 🛠️ When replacing the relay, observe the polarity and correct position (up arrow).
Freon leakage and clogged capillary system
One of the most insidious reasons why Pozis refrigerator stopped freezing is a refrigerant (freon) leak. Unlike electrical breakdowns, here the motor can work properly and not even turn off, trying to gain temperature, but there will be no cold. Freon can escape through microcracks in the evaporator, which are often formed due to corrosion or mechanical damage during defrosting.
The second option for a hydraulic malfunction is clogged capillary tube. There is a very narrow section in the freon circulation system that can become clogged with oil breakdown products or moisture (if the system was poorly charged). When clogged, the compressor operates with overload, the condenser is hot, and the cold evaporator is only partially or completely warm.
⚠️ Attention: Self-filling the refrigerator with freon without vacuuming the system and using professional equipment is prohibited and ineffective. An attempt to simply “add gas” will lead to repeated failure in a short time.
It is rarely possible to diagnose a leak visually; more often, this is indicated by a swelling of the wall inside the chamber (in the place of the evaporator) or black spots from oily smudges on the rear grille. If you notice that Pozis refrigerator works around the clock, but the temperature does not drop below +10...+15°C, the probability of a leak or blockage is more than 80%.
Why can’t you ignore working without freon?
Long-term operation the compressor without a sufficient amount of refrigerant or in the presence of air in the system leads to overheating of the motor windings and its rapid failure. Repairs in this case will cost much more.
Failures in the No Frost system and defrosting
Owners of models Pozis with the system No Frost (or Low Frost) may encounter a situation where the refrigerator is humming, the light is on, but the cold does not flow into the main camera, or, conversely, everything freezes. Often the reason lies in a malfunction of the evaporator defrost system. If the defrost heating element, defrost sensor or timer (or electronic module) do not work, the evaporator becomes overgrown with a “coat” of ice, which blocks air circulation.
As a result, the fan, which should drive cold air through the chambers, either stops, resting on the ice, or simply drives warm air, since the channels are blocked. Externally, this may appear as ice on the back wall or in a niche behind the plastic panel. Fan It can also fail on its own due to bearing wear.
You can check the defrosting system by completely defrosting the refrigerator. Leave the unit switched off with the doors open for 24 hours (minimum 12 hours). If after such defrosting Pozis refrigerator it started working normally and freezes, but after 1-2 weeks the problem repeated itself, the diagnosis of “malfunction of the defrosting system” is confirmed.
- ❄️ Check the back wall in the freezer for the presence of ice (required disassembly).
- 🌀 Make sure that the fan rotates freely and is not jammed with ice.
- 🔌 Check the defrost heating element with a multimeter for a break.
- 📅 Remember the operating cycle: if the ice builds up quickly, the problem is in the sensor or Heating element.
☑️ Actions during defrosting
Electronic control module and sensors
Modern Pozis refrigerators, especially series Smart or models with display on the door, controlled by an electronic module. If an error appears on the display (for example, temperature indicators are blinking) or the panel does not respond to touches, the problem may be in the “brains” of the unit. Electronics are sensitive to power surges, which often happens in old houses.
Also play an important role temperature sensors. If the sensor in the refrigerator compartment “lies” and shows the module that it is already -5°C, the compressor simply will not turn on. Conversely, if the sensor shows +30°C, the refrigerator will work without stopping. Diagnostics requires testing the sensors and checking their resistance at different temperatures.
Often users are faced with the fact that after a power surge, the refrigerator Pozis turns on, but does not freeze, or the indication blinks. In this case, rebooting the module (disconnecting from the network for 15-20 minutes) can help, but if the error persists, replacement of the sensor or repair of the control board is required.
Table of symptoms and probable causes
For ease of diagnosis, the main symptoms of malfunctions Pozis refrigerators are summarized in a table. This will help you quickly navigate the nature of the breakdown.
| Symptom | Probable cause | Difficulty of repair |
|---|---|---|
| Silent, light no | No power, cord burned out, socket faulty | Low |
| Buzzing, clicking, does not start | Start relay, compressor (wedge) | Medium/High |
| Works constantly, no cold | Freon leakage, capillary clogged | High (needs a technician) |
| Poor freezing, ice in camera | Defrost system malfunction (No Frost) | Medium |
| Indication flashes, errors on display | Temperature sensors, control module | High |
When you need to call a technician
Despite the desire to save money, there are situations when independent repair of the Pozis refrigerator is impractical or dangerous. First of all, this applies to work that requires opening a sealed circuit (replacing a compressor, eliminating leaks, refilling with freon). To do this, you need a vacuum pump, a pressure gauge station and a supply of refrigerant.
It is also worth contacting professionals if the problem lies in the electronic control module and you do not have experience in soldering microcircuits and reading electrical circuits. Unskilled intervention can lead to complete failure of expensive components.
⚠️ Attention: Prices for repairs and availability of spare parts may change. Before ordering the service, check with the specialist for the final cost of the work and the warranty for the replaced components. Do not hesitate to ask for certificates for the refrigerants used.
Remember that regular maintenance, timely defrosting (for drip systems) and careful handling will extend the life of your Pozis refrigerator. If you have fixed a minor fault yourself, this is an excellent experience, but in difficult cases, entrust the equipment to specialists.
Is it possible to restore an old refrigerator?
Repairing refrigerators older than 15-20 years is often not economically feasible if the compressor needs to be replaced. The cost of a new motor and work can be up to 70% of the price of a used or new budget unit.
Frequently asked questions (FAQ)
Why does the Pozis refrigerator turn on and immediately turn off?
This is a classic sign of a faulty start relay or problems with the compressor. The relay tries to start the motor, the current increases sharply, and the thermal relay opens the circuit to protect the windings from combustion. Relay replacement or compressor diagnostics is required.
How long should the refrigerator rest after defrosting before turning it on?
It is recommended to wait at least 4-6 hours, and it is better to leave Pozis refrigerator unplugged for a day. This is necessary so that oil that gets into the refrigerant circulation circuit during transportation or defrosting flows back into the compressor.
What to do if the defrost indicator is on in the Pozis RK-139 refrigerator?
In some models, the flashing indicator may signal an increase in temperature in the chamber. Check the tightness of the doors and the quantity of food. If the indicator lights up constantly while the engine is running, the temperature sensor may have failed.
Can I use a Pozis refrigerator if it is on the balcony?
Operation at temperatures below +10°C and above +32°C is not recommended by the manufacturers. In cold weather, the oil in the compressor thickens, which leads to its breakdown during startup, and the thermostat may also not work correctly. In the heat, the refrigerator will work for wear and tear.