Brand refrigerators Stinol are deservedly considered one of the most reliable units in the post-Soviet space, however, even the highest quality equipment eventually requires intervention. One of the most common components that fail after 5–7 years of active use is the thermostat. It is this component that is responsible for maintaining a given temperature regime inside the chambers, turning off the compressor when the desired cold is reached and starting it when heating.
If you notice that your refrigerator stopped turning offworks around the clock, or, conversely, the products in the main chamber begin to deteriorate due to insufficient cooling, and the ice melts in the freezer, then in most cases the culprit is a faulty one sensor Replacing the thermostat in a Stinol refrigerator is a procedure that can be done independently if you have basic skills in working with tools and an understanding of the principles of operation of electrical circuits.
It is important to understand that ignoring the symptoms of a thermostat failure can lead to more serious consequences. Constant operation of the compressor without stopping causes its overheating and eventual failure, the repair of which will cost much more than replacing a cheap part. In this article, we will analyze in detail the process of diagnostics, selection of analogs and direct replacement of the element so that you can give your equipment a second life.
Diagnostics of a thermostat malfunction
Before disassembling the refrigerator and buying new spare parts, you need to make sure that the problem lies in the thermostat. There are several obvious signs indicating failure thermostat. First, pay attention to the operating mode of the motor: if it hums continuously, without pausing to rest, or, conversely, remains silent for days until the food starts flowing, this is the first alarm signal. Secondly, check the temperature: in two-chamber models, food may freeze in the upper compartment or, conversely, defrost.
For a more accurate check, you can carry out a visual inspection and simple manipulation. If you have a manual model, try turning the control knob. If you do not hear a characteristic click when turning the scale from minimum to maximum (or vice versa), this may indicate sticking contacts or a broken capillary tube. It is also worth inspecting the sensor tube itself for mechanical damage or signs of corrosion.
⚠️ Attention: Before carrying out any diagnostic work, be sure to disconnect the refrigerator from the power supply. Working with live electrical wiring is deadly, and an accidental short circuit can damage the compressor or electronic control board.
However, the most reliable test method is to exclude other factors. Make sure that the door fits tightly, the seal is not damaged, and the refrigerator itself is not close to the wall or heating devices. If external factors are excluded and symptoms persist, the probability of malfunction thermostat is more than 80%. In some cases, for accurate diagnostics, a multimeter is required, which “rings” the sensor contacts at different temperatures.
Selection of a suitable thermostat model
Refrigerators Stinol (especially popular series 101, 102, 103, 104, 107, 110, 116, 118, 201, 202, 205, 206, 207) more often In total, they were equipped with thermostats made in Italy by Capillaro or Tam. However, finding an original spare part with the same marking can now be difficult, since the production of many models has been stopped. Fortunately, the market offers many high-quality analogues that fully match the geometric dimensions and electrical characteristics.
When choosing a new thermostat, it is critical to pay attention to the length of the capillary tube. It can vary from 0.5 to 2.5 meters. If you buy a sensor with a tube shorter than the original, you simply will not be able to position it correctly in the chamber, and the temperature adjustment will be incorrect. If the tube is longer, this is not a problem; the excess can be carefully rolled into a ring and secured in free space without bending it.
You should also take into account the number of contacts and the presence of an additional output for indication. Some Stinol models use a thermostat with three contacts, where the third is responsible for the “emergency” light or fan operation. Installing a sensor with the wrong contact configuration will result in the refrigerator either not working or the indicator stopping lit.
| Original marking | Popular analogue | Tube length (mm) | Application |
|---|---|---|---|
| Tam 133 | K-59 L1275 | 2500 | Double-chamber refrigerators |
| Tam 145 | K-57 L2575 | 2500 | Single-chamber models |
| Tam 112 | K-50 L1450 | 1450 | Freezers |
| Capillaro 1.13.3 | Ordo K-59 | 2000 | Universal analogue |
When purchasing, be sure to check the seat and type of fastening. Some modern equivalents may have a slightly modified case shape, but the standard screw holes are usually the same. If you are not sure about the choice, it is better to remove the old thermostat and go to the store with it or with its exact photographs and markings.
Is it possible to use a thermostat from another refrigerator?
Yes, you can if the electrical parameters and dimensions match. The main thing is that the temperature range and length of the capillary tube are suitable for your Stinol model. Sensors from Indesit or Atlant refrigerators are often suitable.
Necessary tools and preparation
Replacing the thermostat in a Stinol refrigerator does not require sophisticated professional equipment. All the necessary tools can be found in the arsenal of a home craftsman. The main tool will be a set of screwdrivers: you will need Phillips screwdrivers of different sizes for removing panels and Phillips for terminals, as well as a flat-head screwdriver for carefully prying up the plastic latches.
You will also need a side cutter or wire stripper (if you need to extend connections), electrical tape or heat-shrink tubing for insulation, and possibly pliers. For the convenience of working in hard-to-reach places, it is recommended to prepare a flashlight, since the lighting inside the thermostat niche is often insufficient.
- 🛠️ Set of screwdrivers (phillips and flat)
- 🔪 Knife or side cutter for cleaning contacts
- 🔦 Powerful flashlight or forehead protector
- 🧤 Work gloves to protect hands
- 📸 Smartphone for photographing the connection diagram
Preparation for repairs begins with completely defrosting the refrigerator. Although the thermostat is located at the top, moisture from the evaporator can flow down, so it is better to unload the food, turn off the unit and leave it open for at least 2-3 hours, and preferably overnight. This will also protect you from accidental electric shock.
☑️ Preparation for replacement
Removing the old thermostat
The process of removing a faulty sensor in refrigerators Stinol has its own characteristics, depending on the specific model, but the general algorithm of actions is similar. In most cases, the thermostat is located behind a plastic panel at the top of the refrigerator compartment or in a niche above the door. First you need to remove this decorative trim by unscrewing the fixing screws.
After removing the panel, you will see the thermostat itself - it is a metal or plastic barrel with a long thin tube coming out of it. The tube can be secured with special clips on the evaporator or simply laid along the wall. Be extremely careful with a capillary tube: it is filled with freon under pressure and has very thin walls. Any scratch or crease will lead to a gas leak and failure of the new sensor immediately after installation.
The next step is to disconnect the electrical wires. It is extremely important not to rely on memory here. Before disconnecting one wire, take a high-quality photo of the connection or draw a detailed diagram showing which wire color went to which contact. In Stinol refrigerators, insulation colors may vary depending on the year of manufacture, and an error in the connection can lead to a short circuit.
⚠️ Attention: The thermostat capillary tube is very fragile. Do not pull it sharply or use sharp objects to release it from the fasteners. If the tube is stuck to the evaporator, carefully defrost this area with a hairdryer (at minimum temperature) or warm water.
Unscrew the mounting screws holding the thermostat housing and carefully remove it from the niche. Be careful not to jerk the tube to avoid damaging the internal evaporator. If the new sensor has a longer tube, the old one can be carefully removed by pulling it from inside the refrigerator body through the technological hole, often closed with a rubber plug at the back of the unit.
Installation and connection of the new sensor
Installation of the new thermostat is carried out in the reverse order of dismantling. The first step is to correctly lay the capillary tube. It should be positioned exactly the same as the old one: pass through the same holes and be attached at the same points. The sensitive end of the tube (usually the last 10–15 cm) must have maximum contact with the surface of the evaporator to correctly read the temperature.
For reliable thermal contact, the end of the tube is often pressed with a metal strip or fixed with a special clamp. Make sure that the tube does not touch any moving parts (such as the air damper) to avoid chafing and damage during use. If you are using an analogue with a longer tube, carefully roll the free part into a ring with a diameter of at least 5 cm and secure it with a clamp in the free niche.
The electrical connection is made strictly according to the previously made diagram or photograph. Insert the wires into the appropriate terminals on the new thermostat. If the terminals of the old sensor were damaged or oxidized, it is better to replace them with new ones using the crimping or soldering method. After connecting, check the reliability of the fixation: the wires should not dangle, but should not be strained.
After installing the mechanical part, assemble the plastic control panel. Make sure that the adjuster knob rotates freely and does not get stuck in its extreme positions. Now you can move on to testing. Plug in the refrigerator and set the thermostat knob to the middle position. After 10–15 minutes, a click should be heard and the compressor should start.
Checking operation and setting the temperature
After replacing the thermostat, the Stinol refrigerator requires a stabilization period. Do not load the chambers with food right away. Allow the unit to idle for 4-6 hours. During this time, it should gain temperature and turn off. If the refrigerator runs without stopping for more than 2 hours and does not turn off, the thermostat may be set to too low a temperature or installed incorrectly.
For accurate adjustments, it is recommended to use an external thermometer placed in a glass of water in the center of the refrigerator compartment. After a few hours of operation, check the readings. For normal food storage, the temperature should be in the range from +2 to +6 degrees Celsius. Adjust the position of the thermostat knob, making small turns and waiting for the mode to stabilize.
- ❄️ Let the refrigerator operate for 4-6 hours without load
- 🌡️ Use a thermometer to monitor the temperature in the chamber
- 🔊 Listen to the frequency of the compressor switching on (norm: 2-4 cycles per hour)
- 🧊 Check the formation of ice in the freezer
Pay attention to the cyclical operation. A normal mode is considered to be one in which the compressor runs for about 15–20 minutes and then rests for 20–40 minutes (depending on the room temperature and chamber load). If the cycle is too short (the compressor turns on and off every 2-3 minutes), this indicates a malfunction or incorrect setting of the thermostat, which is harmful to the motor.
What to do if The refrigerator does not turn off after replacement?
If a new thermostat is installed, but the refrigerator runs continuously, check a few things. First, make sure that the capillary tube is pressed tightly against the evaporator. Secondly, it is possible that the adjustment range of the new sensor is narrower than that of the old one, and at the “minimum” scale it still requires work. Try turning the knob counterclockwise until it stops. If this does not help, the sensor may be defective or not suitable for temperature characteristics.
Is it possible to temporarily short-circuit the thermostat?
Technically, if you connect the wires going to the thermostat, the compressor will run constantly. This can be used as a temporary measure (for several hours) so as not to defrost the food until the technician arrives or spare parts are purchased. However, it is impossible to operate the refrigerator in this mode for a long time: the evaporator will be covered with a coat of ice, and the compressor will burn out from overheating, since it will not receive signals to stop.
Why does the thermostat click, but the compressor does not start?
A click of the thermostat means that its contacts are closed, and a signal to start is sent. If the compressor is silent or hums and clicks (trying to start), the problem is not with the thermostat. Most likely, the start-protection relay, capacitor or the compressor itself has failed. In this case, replacing the thermostat will not solve the problem; diagnostics of the electrical part will be required.