Sudden increase in temperature in the refrigerator compartment or, on the contrary, excessive freezing of food often indicates a failure of the thermostat. This compact device is responsible for maintaining the set temperature, turning the compressor on and off as needed. Owners of refrigerators Stinol often face the need to replace this part, since over time the contacts oxidize and the bellows tube loses its seal.
Independent installation of a new thermostat allows you to save a significant amount on calling a technician, but requires care and compliance with safety precautions. Incorrect connection can lead to damage to the compressor or disruption of the entire cooling system. In this article we will analyze in detail the process of diagnostics, dismantling the old element and correct installation a new temperature controller.
Before taking active steps, you need to make sure that you have a suitable tool and the compatibility of the spare part. Refrigerators Stinol were produced in various modifications, and thermostats may differ in the length of the capillary tube and the shape of the contacts. Ignoring these nuances will result in the unit not starting or operating in an incorrect mode.
Diagnostics of thermostat malfunction
The first step should always be an accurate diagnosis, since symptoms of a thermostat malfunction can easily be confused with compressor problems or freon leakage. If the compressor does not start at all, hums but does not start, or runs nonstop without turning off for hours, then most likely the problem lies in control system. For an initial check, you can close the contacts of the thermostat, removing it from the circuit.
To carry out the test, you must remove the lamp housing or the top cover (depending on the model) to gain access to the contacts. Having carefully disconnected the wires from the thermostat, they are connected to each other with a jumper. If, after connecting to the network, the compressor started working and started getting cold, it means that the unit itself is working properly, and the thermostat requires replacement.
⚠️ Attention: Before any manipulations with electrical components, be sure to disconnect the refrigerator from the network! Working with 220V voltage without the appropriate skills and tools can be life-threatening.
It is also worth paying attention to external signs. If the regulator has cracks, traces of melting or a characteristic burning smell, its replacement is necessary in any case. In some cases, adjusting the screw helps, but if mechanical part is damaged, repair is impossible.
Choosing a compatible thermostat model
The spare parts market offers many analogues of original parts, also for refrigerators Stinol this is especially relevant. Most often, these units used Italian-made thermostats Tam or K59, which have their own design features. It is important to choose a model with a similar length of capillary tube, since one that is too long can be carefully rolled up, but it will not be possible to extend a short one.
When choosing, pay attention to the number of contacts and their location. The standard thermostat for single-compressor models has three terminals, but their markings may differ depending on the manufacturer of the analogue. It is also important to consider the temperature response range, which must meet the requirements of your refrigerator model.
Model correspondence table
Original Stinol thermostats are often marked with codes starting with T or K. For example, TAM-133 is often replaced with an analogue K59-L1954, but before purchasing, be sure to check the length of the tube and the location of the contacts with your old one detail, since modifications could change in different years of production.
You should not chase the lowest price by purchasing Chinese analogues unknown brands. Cheap models often have a shorter service life and less accurate calibration, which will lead to repeated breakdowns after a few months of operation.
Necessary tools and preparation
Successful installation of the thermostat does not require complex professional equipment, a standard home repair kit is sufficient. The basic work of dismantling panels and fastenings can be done with screwdrivers, but additional tools will be needed for electrical work. Prepare everything you need in advance so as not to interrupt the work process.
You will need:
- 🔧 Phillips and flat screwdrivers of different sizes for removing panels and terminals.
- 🔪 A sharp knife or side cutters for stripping wire insulation (if necessary).
- 🔌 Electrical tape or heat shrink for insulating connections.
- 🧤 Gloves to protect hands from sharp metal edges.
☑️ Ready for repair
Pay special attention to the organization of the workplace. The refrigerator should be stable and the area around it should be well lit. If you are working in an unheated room in winter, let the unit warm up to room temperature before starting work to avoid the fragility of plastic elements.
The process of dismantling the old thermostat
Access to the thermostat in refrigerators Stinol is most often carried out through the top of the refrigerator compartment, where The lampshade of the lighting lamp is located. Some models require removal of the decorative trim or the entire top panel. Proceed carefully, as the plastic becomes brittle over time and can crack if moved carelessly.
After removing the protective casing, you will see the thermostat itself, which can be mounted on a bracket or simply inserted into a seat. The capillary tube coming from the housing is usually tucked into a special channel inside the chamber wall or attached to the evaporator. Dismantling requires care not to damage the tube or break the tightness of the system if you plan to use the old housing for some purpose (although this is rare).
Take a photo of the wiring diagram before disconnecting them. Color coding may be standard, but it is better to double-check visually where exactly each wire fits. Disconnect the terminals by pulling them, not the wires, so as not to break the wires inside the insulation.
| Working stage | Action | Important nuance |
|---|---|---|
| 1. Access | Removing the ceiling and panels | Do not apply force to the plastic latches |
| 2. Disconnection | Removing terminals from contacts | Remember or photograph the circuit |
| 3. Removal | Removing the body from the niche | Carefully pull out the capillary tube |
| 4. Check | Comparison with a new part | Make sure that the length of the tube matches |
Installation and connection of the new regulator
Installation of the new thermostat is carried out in the reverse order of dismantling. First of all, you need to carefully insert the capillary tube into the channel. If the length of the tube of the new thermostat is longer than that of the old one, the excess should be carefully rolled into a ring and placed in the free space behind the rear wall, avoiding bends at an acute angle.
Fix the thermostat housing in the seat. Now the most crucial moment is the electrical connection. The wires are connected in accordance with the previously made diagram. The following logic is usually used: one wire goes to the compressor, the other to the network, the third (if any) to the lamp or defrost button. Make sure that the contacts are seated tightly on the thermostat terminals.
⚠️ Attention: Incorrect connection of wires may cause a short circuit or failure of the compressor. If you are in doubt about the color coding, use a multimeter to test the circuit or check the electrical diagram for your model.
After connecting all the wires, visually check the connections again for reliability. No exposed parts of the wires should touch the metal parts of the refrigerator body. Reinstall all removed panels and casings.
Configuring and testing operation
After assembly, the refrigerator can be plugged in. Pay attention to the behavior of the compressor: it should start almost immediately (if the chamber is warm) or after a short delay. If the compressor does not start, but is humming, the problem may be in the start relay, not in the thermostat, or the connection is incorrect.
The initial temperature setting is done using the rotary knob on the thermostat. Typically the scale has markings from 1 to 5 or 7. First, set the average value (for example, 3 or 4) and let the refrigerator run for several hours. Use a thermometer to monitor the temperature in the chamber.
If the refrigerator turns off too early without getting the desired cold, or runs continuously, calibration may be required. Some thermostat models have an adjusting screw, which can be accessed through a special hole in the housing or after partial disassembly. Rotating the screw clockwise usually increases the temperature difference (increases hysteresis), and counterclockwise decreases it.
Frequent installation errors
One of the most A common mistake is damage to the capillary tube during installation. The thin-walled tube is easily cut through by side cutters or pierced by the sharp edge of the housing. Even microscopic damage will lead to freon leakage from the thermostat system, and it will stop responding to temperature changes.
Also often, craftsmen forget about grounding, if it is provided for by the design. The metal housing of the thermostat must be reliably grounded for safe operation. Ignoring this requirement may lead to the appearance of a phase on the refrigerator body.
- 🚫 Using an unsuitable analogue with a different temperature range.
- 🚫 Poor contact in the terminal connections, leading to heating and melting.
- 🚫 Tension wires, which can tear out the terminals when the compressor vibrates.
If after installation the refrigerator does not work correctly, do not rush to blame the new part. Recall whether all steps were followed accurately. Sometimes the problem lies in oxidized contacts on the compressor itself or in a malfunction of the start relay, which appeared precisely at the moment of intervention in the system.
Is it possible to install a thermostat from another refrigerator model?
Theoretically, it is possible if the dimensions, length of the capillary tube and temperature range match. However, it is better to use original spare parts or proven analogs recommended by the manufacturer to avoid unstable operation.
Why does the refrigerator not turn off after replacing the thermostat?
Possible reasons: incorrect temperature setting, freon leak in the main circuit, compressor malfunction or incorrectly selected thermostat model (shutdown temperature is too low).
How to understand that the capillary tube is damaged?
If you do not hear a characteristic click of the contacts when you turn the thermostat knob, or if the tube has visible damage, most likely the seal is broken and the freon has evaporated. This thermostat must be replaced.
Is it necessary to defrost the refrigerator before replacing?
Yes, this is necessary. Working with electrical appliances in a damp environment is dangerous; in addition, ice can interfere with access to the fasteners and damage the wiring when dismantling the panels.