Owners of household appliances are often faced with a situation where the refrigerator no longer maintains the temperature correctly, and the temperature controller becomes the first suspect. The question of which thermostat is installed in the refrigerator Nordbecomes critically important in the event of a breakdown, since the further performance of the unit depends on the correct selection of this part. An incorrectly selected element can lead to spoilage of products or failure of the compressor.
The manufacturer Nord over many years of production has used various components from foreign suppliers, which creates a certain confusion when searching for spare parts. Depending on the year of manufacture and the specific series of the model, the device may contain sensors of different manufacturers, dimensions and with different response characteristics. Understanding these nuances will help you avoid mistakes when ordering and repairing.
In this article we will look in detail at how to identify the device installed in yours, what are the main types of thermostats for this brand and what to look for when purchasing. Accuracy of selection he plays a decisive role, because even millimeters in the length of the capillary tube or a difference in the switching temperature can disrupt the operating cycle refrigerator.
Main types of thermostats in Nord technology
Refrigerators Nord, especially the popular models of the DM and DH series, were most often equipped with Italian-made thermostats. The leader among suppliers was the company Orli (previously known as Murphy), whose devices have proven to be highly reliable. However, in later modifications and some budget lines there could be other options, including Chinese analogues or products Tam.
The key parameter when choosing is the marking that is applied to the metal body of the sensor. Most classic models Nord are characterized by the use of series thermostats TAM 133 or their direct analogues. These devices have a specific design of the bellows tube and contact group, which ensures stable opening of the circuit when a given temperature is reached.
It is also important to consider the length of the capillary tube, which can vary from 0.73 meters to 1.3 meters or more. Capillary tube is a thin copper a conductor filled with refrigerant that transmits temperature changes to the thermostat membrane. If the tube is too short, you will not be able to correctly place the sensitive element in the evaporator, and if it is too long, you will have to carefully roll it up, taking precautions.
How to determine the model and article number of a spare part
Before going to the store or placing an order online, you need to know exactly which thermostat is required. The most reliable way is to visually inspect the dismantled device. To do this, you will have to partially disassemble the refrigerator by removing the plastic regulator cover and the protective casing inside the chamber. You will find embossed markings on the metal case.
Pay attention to the following designations, which are often found in technology Nord:
- 🔹 TAM 133-1M is the most common option for single-compartment refrigerators and freezers that require deep freezing.
- 🔹 TAM 133-3M - similar model, but with different on/off parameters, is often used in two-chamber systems.
- 🔹 K 59 - a series of thermostats Danfoss, which could also be installed in more modern or export versions of refrigerators.
- 🔹 T-133 - markings that can be found on domestic analogues or devices adapted for the post-Soviet market.
If the marking is erased or unreadable, you can focus on the technical parameters: on and off temperatures, as well as the length of the rod and the location of the contacts. Critically important also check the type of fastening and the direction of the capillary tube outlet, as they must coincide with the original for correct installation without rework housing.
What do the numbers in the marking mean?
The numbers after the letter code (for example, 1M, 3M) indicate the response temperature range and the length of the capillary tube. For example, the 1M series often has a range from -24 to -14 degrees, which is ideal for freezers, while other modifications can be designed for positive temperatures in the refrigerator compartment.
Compatibility and characteristics table
To simplify your search, below is a comparative table of the main characteristics of popular thermostats used in refrigerators Nord. This data will help you compare the parameters of the existing part with commercially available analogues.
| Thermostat model | Manufacturer | Capillary length | Type of application | Temperature mode |
|---|---|---|---|---|
| TAM 133-1M | Orli (Italy) | 0.73 m | Freezers | Low temperature |
| TAM 133-3M | Orli (Italy) | 1.3 m | Refrigerator compartment | Medium temperature |
| K 59-L1275 | Danfoss (Denmark) | 2.5 m | Two-chamber models | Universal |
| T-133 (Analog) | China/Russia | 0.8 - 1.5 m | Budget models | Standard |
When buying analogues, pay attention not only to the name, but also to the physical dimensions. Sometimes seats may differ by several millimeters, which will require modification of the fastening. It is also important to check the number of contacts: most models Nord use two-pin thermostats, but there are also three-pin options with a contact to indicate the operation of the compressor.
⚠️ Attention: Do not try to use the thermostat from the freezer in refrigerator compartment and vice versa. The difference in the response ranges will lead to the fact that the products either freeze or begin to deteriorate due to insufficient cold.
Instructions for replacing the thermostat with your own hands
Replacing the thermostat in the refrigerator Nord — a procedure that can be performed at home with basic tools and care. The process does not require specialized equipment for working with freon, since we do not affect the sealed circuit of the cooling system, but work only with the electrical part.
Before starting work, be sure to disconnect the refrigerator from the power supply. Next, remove the temperature regulator handle, unscrew the fastening screw (if there is one under the handle) and carefully remove the plastic control panel. Inside you will see the thermostat itself, often covered with an additional protective casing.
Follow the step-by-step algorithm for a successful replacement:
- 🛠️ Take a photo of the wire connection diagram to the thermostat contacts before disconnecting them, so as not to confuse the polarity during assembly.
- 🛠️ Carefully remove the old sensor from the mounting hole in the evaporator, being careful not to damage the aluminum tubes of the heat exchanger.
- 🛠️ Install the new thermostat by inserting the capillary tube into the same hole to the same depth to which it was previously immersed.
- 🛠️ Connect the wires according to the photograph taken and secure the device body with screws.
☑️ Check before starting
After installing the new part, reassemble the case in the reverse order and turn on the refrigerator. For the first few hours of operation, the device can operate in enhanced mode, gaining temperature. Monitor cyclical process: the compressor should periodically turn on and off, and not work continuously.
Diagnostics of temperature controller faults
Before If you change the thermostat, you should make sure that the problem lies there. Often, symptoms of a malfunctioning thermostat can be confused with compressor problems, a freon leak, or a clogged capillary in the cooling system. Understanding the signs of failure will help you avoid unnecessary purchases.
The main sign of thermostat failure is the lack of cyclic operation of the compressor. If the refrigerator motor Nord runs without stopping and does not turn off, even when the temperature inside the chamber is clearly below normal, this may indicate that the contacts are “stuck” in the closed state. Conversely, if the refrigerator is silent and does not turn on, although it is warm in the chamber, perhaps the contacts do not close.
You should also pay attention to the following symptoms:
- ❄️ Ice forms in the refrigerator compartment or, conversely, food begins to deteriorate due to insufficient cold in any position of the regulator knob.
- ❄️ The regulator knob scrolls freely, without characteristic clicks, or, on the contrary, is stuck in one position.
- ❄️ The compressor makes short beeps and immediately turns off without starting fully (although this may also be a malfunction of the start relay).
For an accurate diagnosis, you can carry out a simple test: with the refrigerator plugged in (being careful!), connect the two wires that go to the thermostat directly. If the compressor starts and works, then the problem is definitely in the thermostat. If the motor is silent or hums, but does not start, you need to look for the cause in the compressor or starting equipment.
⚠️ Attention: Carrying out a test with shorted wires is dangerous due to electric shock. Perform this operation only if you are skilled in working with electrical appliances and are using an insulated tool. Otherwise, it is better to call a specialist.
Where to buy and how not to make a mistake when ordering
Finding an original thermostat for older models Nord can become a task with an asterisk, since the production of many components has been discontinued. However, the market offers many high-quality analogues that fully meet the technical requirements. It is better to buy spare parts in specialized stores of spare parts for household appliances or from trusted suppliers on marketplaces.
When ordering online, be sure to check not only the model, but also the length of the capillary tube. If you buy a device with a 2 meter tube instead of 0.7 meters, you will have to carefully place the excess inside the case, which is not always convenient or safe. A tube that is too short may not reach the temperature control zone, and the refrigerator will not work correctly.
Pay attention to reviews of the seller and the availability of a warranty on the part. Metal thermostats are reliable products, but defects in production or damage during transportation (for example, deformation of the rod) do occur. Chinese replicas They may cost less, but their service life is often inferior to the original Italian or Danish samples.
Frequently asked questions (FAQ)
Is it possible to use a thermostat from another refrigerator in Nord?
Using a thermostat from another model is possible only if the technical characteristics completely match: temperature range, length capillary tube, type of fastening and location of contacts. It’s just that a sensor that is “similar” in appearance may not fit the parameters, which will lead to improper operation of the refrigerator.
Why does the new thermostat click, but the refrigerator does not turn on?
If you hear a click, but the compressor is silent, the problem may not be in the thermostat, but in the start relay, the compressor itself, or the wiring. It is also possible that the new thermostat is faulty (factory defect) or is not connected correctly. Check for voltage at the thermostat inlet.
How can you tell if the capillary tube of the thermostat is damaged?
If the capillary tube is pinched, pierced or has microcracks, sensitive gas comes out. In this case, the thermostat stops responding to temperature changes: the contacts are either constantly open (the refrigerator does not turn on) or constantly closed (the refrigerator does not turn off). Such a part cannot be restored, only replacement.
Do you need to defrost the refrigerator before replacing the thermostat?
Complete defrosting is not necessary if you are only changing the thermostat, since access to it is usually located in the upper part of the refrigerator compartment or from the outside. However, if an ice crust prevents access to the point where the capillary tube enters the evaporator, local defrosting or careful removal of ice is necessary.