Connecting the thermostat in the Atlant refrigerator: instructions with photos and diagrams

The thermostat (or thermostat) is the “brain” of the refrigerator Atlantthat controls the temperature in the chambers, turning the compressor on and off. If the appliance stops freezing, works without stopping, or, conversely, does not turn on at all, in 70% of cases this unit is to blame. Replacing the thermostat is one of the few malfunctions that you can deal with yourself, without resorting to the services of a technician. But accuracy is important here: incorrect connection of the wires can lead to a short circuit or failure of the compressor.

In this article we will look at how correctly connect the thermostat in refrigerators Atlant (including popular models MHM-1708, MX-2824, XM-4021 i others). You will learn:

• 🔧 how to determine that the thermostat is faulty (symptoms and testing with a multimeter)
• 📐 where the thermostat is located in different models Atlant
• 🔌 wiring diagrams (with photos and explanations)
• ⚡ typical mistakes when replacing and how to avoid them
• 🛠️ step-by-step instructions with a checklist for beginners

We warn you right away: working with electricity requires caution. If you are not confident in your skills, it is better to contact a specialist. However, if you follow the instructions and safety measures, replacing a thermostat in Atlanta takes no more than 1–1.5 hours.

1. Signs of a malfunctioning thermostat in the refrigerator Atlant

Before changing the thermostat, make sure that it is the problem. Here key symptoms breakdowns:

• ❄️ The refrigerator does not freeze, but the light inside is on. The compressor does not turn on or runs for 1–2 seconds and turns off.
• 🔥 Continuous operation of the compressor —the motor hums without stopping, a “snow coat” forms in the chambers.
• 🌡️ Temperature discrepancy to the specified settings (for example, in a freezer +10°C instead of -18°C).
• 🔌 Relay clicks There are no thermostat knobs when turning (in a working device you should hear a characteristic click).

The same symptoms may indicate a breakdown compressor, freon leak or faulty start relay. To exclude other causes, perform check the thermostat with a multimeter:

1. Disconnect the refrigerator from the mains and remove the thermostat (read how to do this in the next section).
2. Switch the multimeter to resistance testing mode (200 Ohm).
3. Connect the probes to terminals 3 i 4 (usually they are signed). In a working thermostat, the resistance should be 0 Ohm (closed circuit).
4. Turn the thermostat knob from minimum to maximum - if the resistance does not change, the part is faulty.

If the test confirms a breakdown, proceed with replacement. Thermostats Atlant (depending on the model). Check the brand in the instructions for your device or on the nameplate inside the chamber. K-59, TAM-133, TAM-125 are suitable for refrigerators

2. Where is the thermostat located in the refrigerator Atlant

In most models Atlant the thermostat is located inside the refrigerator compartment, under the top panel or next to the light lamp. The exact location depends on the series:

To get to the thermostat:

1. Unplug the refrigerator and defrost it (if there is ice on the walls).
2. Remove shelves and drawers that interfere with access to panels.
3. Unscrew the screws securing the plastic cover (usually 2-3 self-tapping screws).
4. Carefully remove the cover without damaging the siphon system tube (if there is one).

Under the cover you will see plastic box with wires - this is what it is thermostat 3-4 wires are suitable for it (depending on the model). Never disconnect the wires without photographing or noting their location! A connection error can damage the compressor.

What to do if the thermostat is located outside?

In some models (for example, Atlant NRB) the thermostat is located on the rear wall. To get to it, unscrew the metal lid on the top of the refrigerator (it is secured with 4 screws). The thermostat will be screwed to the condenser or compressor.

3. Connection diagrams for the thermostat in the refrigerator Atlant

Before disconnecting the wires fix their location. You can:

• 📸 Take pictures of the connection from different angles.
• 🎨 Draw a diagram by hand, indicating the colors of the wires.
• 🔖 Sign the wires with a marker (for example, “1”, “2”, “3”).

In refrigerators Atlant two main connection schemes are used:

Scheme 1: Thermostat with 3 terminals (the most common)

Suitable for models MHM-1708, MX-2824, XM-4021 and others with thermostats K-59 or TAM-133.

• 🔴 Red/orange wire —phase from the mains (goes to the compressor).
• 🔵 Blue/black wire —zero (common).
• 🟡 Yellow/green wire —signal (goes to a lamp or relay).

Connection order:

1. Terminal 3 —phase (red wire).
2. Terminal 4 —zero (blue wire).
3. Terminal 6 —signal (yellow wire).

Scheme 2: Thermostat with 4 terminals (for models with No Frost)

Found in refrigerators Atlant with a system No Frost (for example, MHN-1806). Here the wire for the fan is added.

• 🔴 Red - phase.
• 🔵 Blue - zero.
• 🟡 Yellow - compressor.
• ⚪ White - fan.

Connection order:

1. Terminal 3 - phase (red).
2. Terminal 4 —zero (blue).
3. Terminal 6 —compressor (yellow).
4. Terminal 7 —fan (white).

If your model is different, check the operating instructions or look for the diagram using the thermostat number (it is indicated on the body of the part).

4. Step-by-step instructions for replacing a thermostat

When a new thermostat is purchased and the connection diagram is fixed, proceed with the replacement. You will need:

• 🔧 Phillips and flat head screwdrivers.
• 🔪 Wire cutters or wire stripper.
• 🎗️ Electrical tape or heat shrink tubing.
• 🔍 Flashlight (for convenience).

Step 1. Removing the old thermostat

1. Disconnect all wires from the thermostat terminals (it is better to do this one at a time so as not to get confused).
2. Unscrew the screws securing the thermostat to the panel (usually 2 pieces).
3. Carefully remove the part along with the capillary tube (do not bend it!).

Step 2. Installing a new thermostat

1. Place the new thermostat in place of the old one, aligning the mounting holes.
2. Screw it with screws (do not overtighten, so as not to damage the plastic).
3. Connect the wires according to the diagram (see the previous section).

Step 3. Checking operation

1. Make sure that all wires are securely fastened and do not touch metal parts.
2. Turn on the refrigerator at network.
3. Turn the thermostat knob to maximum - a click should be heard (contacts closing).
4. After 5-10 minutes, check whether the compressor has started.

If the refrigerator is working, but does not freeze, there are two possible reasons:

• 🔌 Wrong connection of the wires — check the diagram again.
• 🧊 Freon leak —in this case, you will need the help of a technician.

5. Typical mistakes when connecting a thermostat

Even experienced craftsmen sometimes make mistakes that lead to repeated breakdowns. Here the most common mistakes and how to avoid them:

• ⚡ Inverted phase and neutral wires. This leads to a short circuit or burnout of the compressor. Always check the connection diagram!
• 🔧 Tightening the screws too much. The plastic thermostat housing may crack, causing refrigerant to leak from the capillary tube.
• 🧊 Damage to the capillary tube. If it is bent or pressed, the thermostat will show the wrong temperature.
• 🔌 Poor contact of wires. Oxidized or loose wires cause sparking and overheating.

Another common problem is thermostat model mismatch. For example, if instead K-59 set TAM-112, the refrigerator will not work correctly (too long or too short). Always check with passport data your model.

⚠️ Attention! If, after replacing the thermostat, the compressor turns on for 1-2 seconds and turns off, this is a sign turn-to-turn short circuit in the motor winding. In this case, the thermostat has nothing to do with it - the compressor needs to be repaired or replaced.

To avoid mistakes, follow a simple rule: take your time. It’s better to double-check the connection than to spend money on a new compressor later.

6. How to check the operation of the thermostat after replacement

Replacing the thermostat is only half the battle. Now you need to make sure that it works correctly. Here step-by-step verification algorithm:

1. Listen to the clicks. When you turn the thermostat knob from minimum to maximum, you should hear a distinct click (closing contacts). If there is no click, the part is defective.
2. Measure the temperature. Place the thermometer in the refrigerator compartment. After 4–6 hours it should drop to +4...+6°C (with the handle in the middle position).
3. Check the cyclic operation. The compressor should turn on for 10-20 minutes, then turn off for 5-10 minutes. If it works without stopping or does not turn on at all, the thermostat is not connected correctly.
4. Evaluate the freezer compartment. In models with one compressor, the freezer must maintain a temperature of -18...-20°C. If it is warmer, the problem is in the thermostat or freon leak.

If the refrigerator Atlant equipped with electronic control unit (as in models MHN-1806), after replacing the thermostat it may required error reset. To do this:

1. Disconnect the refrigerator from the network for 10 minutes.
2. Turn it back on and press the button Super Cool (if any) for 5 seconds.

If after a day of operation the problems remain (does not freeze, does not turn off, makes noise), it means that the thermostat is not selected correctly or there is another malfunction.

7. Where to buy a thermostat for a refrigerator Atlant and how much does it cost

A new thermostat can be purchased:

• 🛒 In service centers Atlant —original spare parts with a guarantee (price: 800–1500 rubles).
• 🌍 On marketplaces (Wildberries, Ozon, Yandex Market) - universal models K-59 or TAM-133 (price: 500–1200 rubles).
• 🔧 In spare parts stores for household appliances (for example, "220 Volt", "Techport").

When choosing, pay attention to:

• 🔍 Thermostat model (must match the original one).
• 📏 Length of the capillary tube (in some models it is short and cannot be extended).
• 🔌 Number of terminals (3 or 4).

The cost depends on the type of thermostat:

Thermostat model	Average price (RUB)	Suitable for models
K-59	600–900	MHM-1708, MX-2824, XM-4021
TAM-133	800–1200	MHN-1806, MX-2831
TAM-112	500–700	NRB-167, NRB-180

⚠️ Attention! Before purchasing, check with the seller whether the thermostat is suitable for your refrigerator model. Some universal parts may not have the same characteristics (for example, temperature range).

8. Frequently asked questions (FAQ)

❓ Is it possible to replace the thermostat in a refrigerator Atlant without experience?

Yes, if you know how to use a screwdriver and a multimeter. The main thing is do not mix up the wires when connecting, do not damage the capillary tube. For beginners, we recommend that you first watch the video instructions for your model.

❓ Which thermostat is suitable for a refrigerator Atlant MHM-1708?

Thermostats are suitable for this model K-59 or TAM-133. The original part is marked K-59-L2M. When purchasing, check that the length of the capillary tube is at least 1.2 m.

❓ What to do if, after replacing the thermostat, the refrigerator does not turns on?

Possible reasons:

1. Wrong connection of wires (check the diagram).
2. Faulty new thermostat (check it with a multimeter).
3. Problems with the compressor or start relay.

Disconnect the refrigerator, check all contacts and reconnect.

❓ Is it possible to repair the thermostat instead replacement?

In most cases, no. Thermostats K-59 and TAM-133 are non-separable, and their repair is not cost-effective. Exception - oxidation of contactswhich can be eliminated by stripping. But if the part does not hold the temperature or does not click, it needs to be changed.

❓ How long does it take to replace a thermostat?

On average - 1–1.5 hoursif you are doing this for the first time. An experienced master can do it in 20–30 minutes. The most time is spent on defrosting and checking operation after connection.