The situation when a refrigerator Stinol works without interruption is familiar to many owners of equipment of this brand. The compressor hums continuously, trying to reach the set temperature, but the cooling cycle does not complete. This is not just an annoying noise that interferes with a comfortable rest, but also a direct signal of serious problems in the operation of the system. If you ignore the problem, you may encounter overheating of the motor and expensive repairs.
Continuous operation of the unit often leads to the formation of an ice coat on the walls or, conversely, to spoilage of food due to insufficient cooling. Owners of models Stinol 101, Stinol 103 and other modifications may encounter this both a year after purchase and after ten years of operation. Understanding the reasons will help you determine whether you can handle it yourself or whether you will need to call a specialist.
In this article we will analyze in detail the main technical and operational factors that affect the continuous operation of refrigeration equipment. We will look at mechanical breakdowns, electrical faults and external factors. Diagnostics should start with simple steps to eliminate trivial user errors.
Faults of the thermostat and temperature sensors
One of the most common reasons why The refrigerator Stinol does not turn off, due to a failure of the thermostat. This component is responsible for monitoring the temperature inside the chambers and sending a signal to turn off the compressor. If the contacts inside the thermostat are stuck or the sensitive tube is broken, the system “thinks” that it is too warm inside and causes the motor to wear out.
In models with electronic control, temperature sensorsare used instead of a mechanical thermostat. Their readings are transmitted to the control module, which makes the decision to stop the cycle. Incorrect data from the sensor may be caused by oxidation of the contacts or physical damage to the element. In this case, the refrigerator will operate until the emergency protection is triggered or the motor winding burns out.
How to check the thermostat without instruments?
Unplug the refrigerator, remove the thermostat and immerse its sensitive tube in cold water with ice. If after a few minutes you do not hear a click when the contacts open, the device is faulty and requires replacement.
To replace a thermostat or sensor, partial disassembly of the housing is often required. It is important to choose an analogue with identical characteristics, since installing an unsuitable part will lead to incorrect operation of the entire system. In some cases, the problem lies not in the sensor itself, but in the wiring going to it.
Refrigerant leak and problems with the compressor
If the refrigerator Stinol hums, but does not cool properly and does not turn off, there is a high probability of a freon leak. When the amount of refrigerant in the system decreases, the pressure drops and the compressor cannot reach the required temperature to stop. The motor runs idle, trying to compensate for the lack of working fluid, which leads to its rapid overheating.
The compressor is the heart of the refrigerator, and its wear also affects the cyclical operation. If the piston group is worn out or the valves have lost their tightness, the unit does not create the required pressure. As a result, cooling capacity falls, and the equipment goes into continuous operation mode. This can be determined by the characteristic sound: the motor may be quieter than usual or, conversely, make strange knocking noises.
Removing the leak requires professional intervention. The technician must find where the circuit is damaged, solder it, evacuate the system and fill in a new amount of refrigerant. It is impossible and dangerous to perform these operations independently without special equipment.
Influence of the environment and operating conditions
Often the reason lies not in a breakdown, but in incorrect operating conditions. If the refrigerator Stinol is installed next to heating appliances, in direct sunlight or in a niche without proper ventilation, heat transfer is difficult. The compressor is forced to work longer to cool the chambers, especially in the summer.
It is also worth checking the tightness of the door. If sealing rubber is worn out, dirty or deformed, warm air constantly flows inside. Sensors detect an increase in temperature and do not give a command to turn off the motor. This is a common problem in older models, such as Stinol 102 or Stinol 104.
- 🌡️ Room temperature: operation at temperatures below +10°C or above +35°C disrupts the cycle.
- 🚪 Closing tightness: Check whether dishes or crumbs are preventing the door from closing tightly.
- ❄️ Loading the chambers: Placing hot foods makes the refrigerator work harder.
Another factor is frequent opening of the door. If there are a lot of people in the house or are used to choosing food for a long time, standing in front of an open refrigerator, heat exchange is disrupted. In such cases, the equipment simply does not have time to enter the mode and stop.
Malfunctions of the control module and electrical circuit
In modern models with a system No Frost and electronic control, the control module is responsible for all processes. Malfunctions caused by power surges or moisture can block the shutdown signal. In this case, the relay that switches the compressor circuit remains closed constantly.
Problems with the start-up relay can also lead to the refrigerator not turning off. If the relay is "stuck" in the "on" position, current continues to flow to the motor windings. This is a critical situation that requires immediate intervention, since there is a high risk of fire or complete failure of the compressor.
Electronics diagnostics require a multimeter and knowledge of circuit design. It is necessary to check the integrity of the tracks on the board, the condition of the capacitors and the functionality of the triacs. You can often visually notice swollen capacitors or traces of burning, which indicates the need to replace the module.
⚠️ Attention: If you smell burning or see sparking in the compressor area or rear panel, immediately unplug the refrigerator. Further operation may lead to a fire.
Specifics of Stinol models and operating modes
Different models of refrigerators Stinol have their own design features. For example, in two-compressor models, each motor is responsible for its own chamber, and their operating modes may not coincide. If one of the compressors does not turn off, the problem can be localized precisely in the circuit of this chamber.
There is also the concept of “super freezing”. If the user accidentally activates this function (the button with the image of a snowflake or the Super Freeze inscription), the refrigerator will operate continuously until the mode is turned off manually or automatically by a timer. In some older models, the shutdown timer may have failed.
Particular attention should be paid to the defrosting system in models No Frost. If the evaporator heating element or defrost timer is faulty, a coat of ice will build up on the evaporator. This blocks air circulation, the temperature sensor does not see the cold, and the compressor works non-stop, trying to cool the chamber.
Diagnostics and step-by-step test instructions
Before calling a technician, you can carry out initial diagnostics yourself. This will help narrow down the troubleshooting area and roughly estimate the cost of future repairs. Start with a visual inspection and listening to the operation of the unit.
Perform the following steps to check the main components:
☑️ Primary diagnostics of the refrigerator
If a visual inspection does not reveal any obvious problems, proceed to a deeper check. Pay attention to how often the motor turns on and off during normal operation. For a working refrigerator, the operating cycle is usually about 15-20 minutes of operation and 10-15 minutes of rest, although these values depend on the load and room temperature.
Below is a table with the main symptoms and probable causes that will help in diagnosis:
| Symptom | Probable reason | Difficulty of repair |
|---|---|---|
| Compressor is hot, does not turn off | Freon leak, capillary clogged | High (needs a technician) |
| Motor is cold, but it buzzes | Malfunction of the thermostat or relay | Medium (you can do it yourself) |
| Ice on the back wall | Malfunction of the defrost system | Medium/High |
| The refrigerator does not freeze | The compressor does not start or is weak | High |
⚠️ Attention: Technical characteristics and location of components may vary depending on from a specific modification Stinol. Always check the product data sheet before disassembling.
When you need to call a specialist
There are a number of situations when self-repair is not only impractical, but also dangerous. If the problem is related to a sealed circuit (freon leak, compressor replacement, capillary cleaning), special equipment and a license to work with refrigerants are required.
Also, do not try to repair the electronic control module without the appropriate qualifications. Improper soldering or installation of non-original parts can lead to short circuits and failure of other components. In such cases, saving on calling a technician may result in the purchase of a new refrigerator.
If after replacing the thermostat or checking the seal the situation has not changed, and the refrigerator Stinol continues to work without interruption, the problem is probably hidden deeper. Professional diagnostics using pressure gauges and leak detectors will allow you to accurately determine the malfunction and eliminate it effectively.
Is it possible to operate a refrigerator if it does not turn off?
Short-term non-stop operation is acceptable, for example, when loading a large number of products or on a hot day. However, long-term operation (more than 24 hours) without breaks leads to overheating of the compressor, drying out of the oil and eventual breakdown. If the equipment works without stopping for more than a day, it must be turned off and diagnosed.
Why does the new Stinol refrigerator take a long time to turn off for the first time?
When turned on for the first time or after long-term transportation, the refrigerator takes time (up to 24 hours) to reach the set temperature. During this period, the compressor can operate almost without interruption. This is normal if the cycles stabilize after the temperature rises.
How often should the refrigerator turn off normally?
Under normal conditions, the operating time ratio is about 40-50%. This means that out of an hour the compressor works for approximately 20-30 minutes and rests for 30-40 minutes. The frequency depends on the temperature in the room, the amount of food and how often the door is opened.
Does line voltage affect continuous operation?
Yes, low line voltage can prevent the compressor from starting and operating normally, causing it to operate inefficiently and take longer to reach temperature. To protect equipment, it is recommended to use a voltage stabilizer, especially in areas with unstable power supply.