Replacing the thermostat in the Atlant refrigerator: a detailed guide with photos

The thermostat (or thermostat) is the “brain” of the refrigerator Atlantwhich controls the temperature in the chambers and controls the operation of the compressor. When this unit fails, the equipment either stops freezing or works without stopping, risking burning out the motor. Replacing a thermostat is one of the most common repair operations that you can do yourself, saving on calling a technician.

In this article you will find step-by-step instructions with photoshow to dismantle the old thermostat and select a new one (including a compatibility table for popular models Atlant), and also avoid common installation mistakes. We will figure out what tools are needed, how to check the functionality of the part before installation and what to do if after replacement the refrigerator still does not turn on.

Important: the procedure is different for single-chamber and double-chamber models, as well as for electronically controlled refrigerators (there is a thermostat integrated into the board). If your equipment is equipped with a display and touch buttons, most likely you will need diagnostics of the module - we will also tell you about this.

Signs of a malfunctioning thermostat

Before changing the thermostat, make sure that the problem is in it. Here key symptomsthat indicate a breakdown of the temperature controller:

• 🔴 The refrigerator does not turn on at all (there is no sound of the compressor running, the lights inside do not light up).
• ❄️ The compressor works without stopping, but the temperature in the chambers does not drop to the required level.
• 🌡️ The freezer is too cold (food freezes), and the refrigerator is too warm (or vice versa).
• 🔄 The refrigerator turns on for 5-10 seconds and immediately turns off (the protection is triggered).
• 💡 The light inside is on, but the compressor does not start even after manually turning the thermostat knob.

The same symptoms may appear when compressor malfunction, freon leak or breakage of the start relay. To exclude other causes, perform a simple check:

1. Disconnect the refrigerator from the network for 10-15 minutes, then turn it on again.
2. Turn the thermostat knob to position MAX (or 7 for models with a digital scale).
3. Put your ear to the back wall: if the compressor starts and works stably, the problem is not in the thermostat.

If after these manipulations the refrigerator still does not work, most likely the thermostat requires replacement. In 80% of cases, thermostat malfunction in Atlant refrigerators is associated with oxidation of contacts or mechanical wear of the bellows (sensitive tube), and not with electronic failures.

Single-chamber|Double-chamber with mechanical control|Double-chamber with electronic control|I don’t know the model -->

Which one The thermostat is suitable for the Atlant refrigerator

Refrigerators Atlant are equipped with several types of thermostats, depending on the model and year of manufacture. The most common options:

• 🔹 K-59 (or Danfoss 077B6) - installed in most single-chamber models (for example, MHM-1708, MX-2821).
• 🔹 TMA-133 — for two-chamber refrigerators with mechanical control (MXM-2835, MHM-1840).
• 🔹 TAM-145 —used in models with a system No Frost (for example, MXM-2808-90).
• 🔹 WDF19 or WDF22 —electronic thermostats for modern lines with display.

In order not to make a mistake with your choice, pay attention to marking of the old thermostat (it is printed on the body) and check the compatibility table:

If you did not find your model in the table, pay attention to length of the capillary tube (it must match the old part) and the number of contacts. For example, thermostats K-59 and TAM-133 look similar, but have. different resistance and are not interchangeable.

⚠️ Attention: In refrigerators Atlant with the system No Frost the thermostat is often integrated with a defrosting timer. If you replace only the thermostat and leave the old timer, the refrigerator may not work correctly. In this case, it is better to buy the unit assembled.

Tools and materials for. replacements

For work you will need:

• 🔧 Screwdrivers: Phillips (PH2) and flat (3-4 mm).
• 🔨 Pliers or round nose pliers (for removing spring clamps).
• 📏 Multimeter (to check contacts).
• 🧲 Magnet or adhesive tape (to temporarily secure the capillary tube).
• 🧴 Alcohol or solvent (to clean contacts).
• 🔌 New thermostat (with spare gasket if required).

If in your model the thermostat is located behind the control panel (as in Atlant MKhM-2835), you may need plastic spatula to carefully remove the clips. For refrigerators with an overhead thermostat (for example, MKhM-1708), additionally prepare flashlight —the lighting in the chamber will interfere.

Disconnect the refrigerator from the network|Defreeze the chambers (if ice prevents access)|Take a photograph of the location of the wires|Prepare a replacement thermostat (check for functionality)|Wear gloves (contacts may be sharp)-->

If this is your first time repairing a refrigerator, we recommend that you look in advance video disassembly of your model - this will help avoid mistakes when dismantling the panel. For example, in some Atlant the thermostat is mounted not on screws, but on plastic latches, which are easy to break.

Step-by-step instructions for replacement thermostat

The replacement process differs depending on refrigerator type and thermostat location. We will consider the two most common options: for single-chamber models (for example, MHM-1708) and for two-chamber models with mechanical control (for example, MXM-2835).

Option 1: Single-chamber refrigerator (thermostat inside chambers)

In single-chamber Atlant the thermostat is usually located under the plastic cover on the top panel inside the refrigerator compartment. To get to it:

1. Unplug the refrigerator and defrost it.
2. Remove shelves and drawers that interfere with access to the top panel.
3. Pry up with a screwdriver or plastic spatula lid latches (they may be hidden under the rubber seal).
4. Disconnect the capillary tube from the evaporator (it is secured with a plastic clamp or clip).
5. Take a photo of the wire connection diagram or mark them with tape.
6. Unscrew the screws holding the thermostat and carefully remove it.

When When installing a new thermostat, make sure that capillary tube does not bend or touch the walls of the chamber. Its end must be secured to the evaporator (usually using a metal clamp).

Option 2: Two-chamber refrigerator (thermostat behind the control panel)

In two-chamber models (for example, Atlant MHM-2835) the thermostat is on the back of the panel with handles. To replace it:

1. Remove the top cover of the refrigerator (it is secured with 2-4 screws from the back).
2. Unscrew the screws holding the control panel (usually they hidden under decorative plugs).
3. Carefully disconnect the panel without damaging the backlight and indication wires.
4. On the back side of the panel you will see a thermostat - disconnect the wires from it (after photographing the circuit).
5. Unscrew the fastening screws and remove the old one thermostat together with a capillary tube.
6. Install a new thermostat, connect the wires and reassemble the panel in the reverse order.

In some models (for example, Atlant MHM-1840), the thermostat may be hidden under the freezer. In this case, you will need to remove the bottom panel - to do this, unscrew the screws on the front leg of the refrigerator.

What to do if the wires are oxidized?

If the thermostat contacts covered with a green coating, they must be cleaned with alcohol or a special contact liquid. After cleaning, wipe the wires with a dry cloth and apply a thin layer of petroleum jelly (this will prevent re-oxidation). If the wires are damaged, they must be replaced or insulated with heat-shrink tubing.

After installing a new thermostat do not turn on the refrigerator immediately. First check:

• 🔌 Correct connection of the wires (check the photo).
• 📏 Position of the capillary tube (it should not be pinched).
• 🔩 Reliability of fastening thermostat (the screws must be tightened, but not overtightened).

Checking operation after replacement

To make sure that the replacement was successful, follow these steps:

1. Connect the refrigerator to the network and set the thermostat knob to position 1–2 (minimum cooling).
2. Put your ear to the back wall: the compressor should start in 5-15 minutes.
3. Check that the temperature in the refrigerator compartment begins to drop (you can put an outdoor thermometer on the shelf).
4. After 1-2 hours of operation, turn the knob to position MAX —the compressor should continue to work without stopping.

If the refrigerator does not turn on:

• 🔹 Check whether the wires are connected correctly (especially yellow-green grounding).
• 🔹 Make sure that the capillary tube is not damaged and fits tightly to the evaporator.
• 🔹 Test the new thermostat with a multimeter (at room temperature, contacts 3 and 4 should be closed).

If the compressor is running without stopping, but the temperature is the chamber does not lower, the following reasons are possible:

• 🔴 The capillary tube is installed incorrectly (it should touch the evaporator and not hang in the air).
• 🔴 The thermostat is incompatible with the refrigerator model (check the marking).
• 🔴 Leakage freon or compressor malfunction (diagnosis by a technician is required).

Typical errors and how to avoid them

Even. Experienced craftsmen sometimes make mistakes when replacing a thermostat. Here are the most common ones and ways to prevent them:

Another common problem is incorrect installation of the thermostat handle. In some models Atlant the handle rod fits into the groove on the thermostat, and if it is turned in the wrong direction, the temperature adjustment will work “in reverse” (when turned clockwise, the refrigerator will turn off).

If you are faced with the fact that after replacing the thermostat the refrigerator turns on for a few seconds and turns offcheck:

• 🔹 Reliability of fastening the capillary tube to the evaporator (if it goes away, the thermostat “thinks” that the temperature has already reached normal).
• 🔹 State of the compressor start relay (it could burn out due to overload).
• 🔹 Door closure tightness (if the seal is damaged, warm air enters the chamber and the thermostat operates shutdown).

⚠️ Attention: In refrigerators Atlant with electronic control (for example, NRM-6126), replacing the thermostat may require board flashingif after installing a new sensor an error appears on the display (for example, E1 or E2), contact the wizard to reset the settings.

When is the best time to call masters

Despite the fact that replacing a thermostat is a relatively simple operation, in some cases it is better to trust a professional:

• 🔧 If your refrigerator Atlant is equipped with electronic control unit (with a display and touch buttons) In such models, the thermostat is often integrated into the refrigerator. board, and its replacement requires soldering or programming.
• 🔧 If after replacing the thermostat, the refrigerator does not turn on at all (no light, no relay clicks heard) This may indicate problems with the compressor or). electrical circuit.
• 🔧 If you find freon leak (signs: oil on the pipes, the compressor works, but does not cool). In this case, you will need to refill the system.
• 🔧 If the thermostat is located in a hard-to-reach place (for example, under the foam in the housing), dismantling such components without experience can lead to damage to the insulation.

The cost of replacing the thermostat in a service center is from 1500 to 3000 rubles (depending on the model and region). If you are not confident in your abilities, compare this amount with the cost of a new thermostat (300–800 rubles) and decide whether it’s worth the risk.

Please note: in some service centers Atlant There is a warranty for the replaced parts. If you install the thermostat yourself and it turns out to be defective, it will be more difficult to return it under warranty.

FAQ: Frequently asked questions about replacing the thermostat

Is it possible to replace the thermostat without defrosting the refrigerator?

Technically yes, but it is unsafe. Ice and condensation can get on the contacts, which will lead to a short circuit. In addition, when frozen, plastic parts become brittle and fragile. may crack during dismantling. We recommend taking 2-3 hours to defrost.

How to check the thermostat with a multimeter?

Switch the multimeter to resistance testing mode (200 Ohm). At room temperature, the contacts should be closed (resistance ~0 Ohm). place the thermostat in cold water, the contacts should open. If this does not happen, the part is faulty. 3 and 4 must be closed (resistance ~0 Ohm). If you place the thermostat in cold water, the contacts should open. If this does not happen, the part is faulty.

What to do if, after replacing the thermostat, the refrigerator runs without stopping?

Probable reasons:

1. The capillary tube does not fit tightly to the evaporator (the thermostat “does not see” the real temperature).
2. The thermostat is incorrectly selected (for example, instead of TAM-133 a K-59 is installed).
3. The compressor or start relay has failed.

Check the tube fastening and the compatibility of the part. If the problem persists, call a technician to diagnose the compressor.

Where to buy a thermostat for the Atlant refrigerator?

A new thermostat can be purchased:

• In official service centers Atlant (warranty on the part, but the price is higher).
• In online spare parts stores (for example, 220-volt.ru, All-Zapchasti).
• In markets or in household appliance stores (check compatibility by refrigerator model).

Average cost: 300–800 rubles for mechanical thermostats and 1000–1500 rubles for electronic ones.

Is it possible to repair the thermostat instead of replacing it?

In most cases, no. Modern thermostats are non-separable units, and their repair comes down to cleaning the contacts or replacing the capillary tube (which is almost impossible at home) The exception is oxidation of the contacts, which can be eliminated with alcohol. Vaseline. If the problem is in the bellows or the release mechanism, the part only needs to be replaced.