Where to look for a thermostat in the refrigerator: 5 placement locations + diagnostic instructions

The thermostat (or thermostat) is the “brain” of the refrigerator, responsible for maintaining the set temperature. When it fails, the equipment either freezes the food or stops cooling altogether. But before you run to the service center, it’s worth understanding where exactly this unit is hidden your model. Its location depends on the type of refrigerator, year of manufacture and even the design of the freezer.

Many users are confused when faced with the need to replace the thermostat: in some models it is accessible in 5 minutes, in others it is hidden under panels and requires disassembly. In this article you will find step-by-step search schemes for refrigerators Atlant, Indesit, Samsung, LG and other brands, and also learn how to distinguish a malfunction of the thermostat from a breakdown of the compressor or sensor.

⚠️ Warning: If your refrigerator is under warranty, self-repair will void it. Check the conditions in the product passport or on the manufacturer’s website.

1. What does a refrigerator thermostat look like?

Thermostat is a compact device the size of a palm, consisting of:

  • 🔘 Case (plastic or metal) with contacts for connecting wires.
  • 🔘 Capillary tube - a thin copper tube filled with freon. It is attached to the evaporator and reacts to temperature.
  • 🔘 Adjustment knobs (in mechanical models) or electronic display (in modern refrigerators).

Externally, the thermostat may resemble:

  • 📦 Rectangular box with a lever (old models ZIL, Minsk).
  • 📱 Flat module with buttons +/– (electronic refrigerators Samsung or Bosch).
  • 🔌 Cylindrical sensor with wires (in systems No Frost).

⚠️ Attention: In refrigerators with two compressors (for example, Liebert or Haier) there are also two thermostats - separately for refrigeration and freezer compartments. Their location may differ.

2. Where is the thermostat located in refrigerators of different brands

Manufacturers place thermostats depending on the design Below - exact locations for popular brands.

Refrigerator brand Model type Where to look for the thermostat Access features
Atlant, Minsk Single-chamber, double-chamber (mechanics) Inside the refrigerator compartment, under the top panel or behind the temperature control knob Attached with 2-3 screws Capillary. the tube goes to the evaporator.
Indesit, Ariston Two-chamber (electromechanics) Outside, on the top panel of the case (under the decorative cover) You need to remove the top cover of the refrigerator (2-4 screws).
Samsung, LG (series No Frost) Inverter, electronic Behind the rear wall of the refrigerator compartment or in the control module (on the door) It is necessary to remove the internal panel. The thermostat is often combined with a sensor.
Bosch, Siemens Two-chamber (electronic) Inside the case, next to the compressor or on the top panel Access through the lower back cover or top panel.
Stinol, Nord Old models (before 2010) Under the thermostat handle in the refrigerator compartment It is secured with latches. The tube goes to the “crying” evaporator.

🔍 Tip: If you are not sure about the model, look at the nameplate (metal plate) on the back of the refrigerator. serial number and modification - this will help you find the exact diagram in the instructions.

📊 What brand of refrigerator is in your home?
Atlant/Minsk
Indesit/Ariston
Samsung/LG
Bosch/Siemens
Other brand
I don’t know

3. Step-by-step instructions: how to find the thermostat in the refrigerator Atlant i Indesit

Let's consider the two most common options.

🔹 Refrigerators Atlant (single-chamber and double-chamber)

  1. Unplug the refrigerator and remove all products from camera.

  2. Remove the thermostat handle (pull it towards you or pry it off with a screwdriver).

  3. Under the handle you will see plastic cover unscrew it (usually 1-2 screws).

  4. Behind the cover there is the thermostat itself. It is mounted on metal plate with a capillary tube.

📌 Symptom of malfunction: If you do not hear a click (closing contacts) when turning the adjustment knob, the thermostat faulty.

🔹 Refrigerators Indesit and Ariston (two-chamber)

  1. Turn off the power and remove top decorative panel (it is held on by latches or screws).

  2. Under the panel you will see control unit —the thermostat is located to the right or left of the light bulb.

  3. Disconnect the wires (take a photo of their location!) and unscrew the fasteners.

⚠️ Attention: In models Indesit with the system Full No Frost the thermostat can be hidden behind the inner panel of the refrigerator compartment. For access, you will need to remove the plastic air duct box.

☑️ What to do before replacing the thermostat

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4. How to check the thermostat for functionality

Before changing the thermostat, make sure that it is the problem you will need multimeter (or tester).

🔧 Checking the mechanical thermostat

  1. Remove the thermostat (as described above) and disconnect the wires.

  2. Switch the multimeter to mode continuity (or resistance measurements).

  3. Touch the contacts with the probes 3 and 4 (usually they are signed).

  4. Twist adjustment knob:

    • 🔹 In position 0 (off) the resistance should be infinite (open).
    • 🔹 In position 1–7 — 0 Ohm (closed).

If the contacts do not close/open, the thermostat is faulty.

🔧 Checking the electronic thermostat

Electronic thermostats (in Samsung, LG) are more difficult to check:

  1. Measure the resistance between the contacts 1 and 2 at room temperature Normal: 1–10 kOhm.

  2. Place the thermostat in cold water (+5°C) and repeat the measurement. The resistance should increase.

    3. 💡 Tip: If you don’t have a multimeter, you can temporarily connect known to be working thermostat (for example, from an old refrigerator) and check if the compressor starts working.

    What to do if the thermostat is working but the refrigerator is not freezing?

    The problem may be in the compressor, start relay, freon leak or evaporator sensor. In this case, professional diagnostics is needed.

    5. How to replace the thermostat yourself: step-by-step algorithm

    If diagnostics confirm a breakdown, proceed with replacement. Important: the new thermostat must be identical to the old one in model and characteristics (especially in the length of the capillary tube).

    🛠 Tools and materials

    • 🔧 Phillips and flathead screwdrivers.
    • 🔌 Multimeter (for re-checking).
    • 📸 Phone (to take a photo of the wire connection).
    • 🧰 New thermostat (for example, K59-L1938 for Atlant or WDF19 for Indesit).

🔄 Sequence of actions

  1. Turn off the refrigerator and defrost it (if any ice).

  2. Remove the old thermostat (as described in section 3).

  3. Disconnect the capillary tube from the evaporator (carefully so as not to bend it!).

  4. Connect the wires to the new thermostat in the same orderas on the old one (use photo).

  5. Install the new thermostat in place and secure it.

  6. Connect the refrigerator to the network and check the operation (the compressor should start in 5-10 minutes).

⚠️ Attention: If after replacement the refrigerator is unstable (often turns on/off), check:

  • 🔹 Correct connection of the capillary tube (it should fit tightly to the evaporator).
  • 🔹 Temperature setting (the knob should be on 2–3 for normal work).

6. Common mistakes when searching and replacing a thermostat

Even experienced craftsmen sometimes make mistakes. data-i="218">cannot be done can't do:

  • ❌ Ignore the capillary tube. If it is damaged or incorrectly secured, the thermostat will operate with a delay.
  • ❌ Install a thermostat from a different model. Even if it looks similar, the parameters may not match (for example, temperature range). data-i="222">Install a thermostat from a different model
  • ❌ Forget about grounding. In modern refrigerators, the correct operation of the thermostat depends on the correct connection of the ground.
  • ❌ Check the thermostat "by eye"Without a multimeter, it is impossible to accurately determine its malfunction.

🔧 Example from practice: In refrigerators Samsung RL-33 the thermostat is often confused with defrost sensor, which is located next to each other. Their functions are different, and replacing one instead of the other will not solve the problem.

7. When is it better to call a technician rather than repair it yourself

Not all thermostat breakdowns can be fixed at home. Contact a specialist if:

  • 🔧 Thermostat soldered into the control board (relevant for LG and Samsung with an electronic unit).
  • 🔧 Capillary tube damaged (required soldering or replacing the entire assembly).
  • 🔧 After replacement, the refrigerator does not turn on or displays an error on the display (possibly a problem in the firmware).
  • 🔧 Your refrigerator under warranty (self-repair will deprive you of the right to free service).

💰 Cost of replacing the thermostat in the service: from 1,500 to 4,000 rubles (depending on the model and region). For comparison: a new thermostat will cost 500–2,000 rubles.

⚠️ Attention: In refrigerators with a system No Frost a faulty thermostat can lead to icing of the evaporator and damage to the fan. If after replacement the ice continues to build up, check defrost timer i Heating element.

FAQ: Frequently asked questions about thermostats in refrigerators

🔹 Is it possible to repair the thermostat, or only replacement?

Mechanical thermostats cannot be repaired —they can only be replaced. Electronic ones sometimes need to be soldered. (for example, if the contacts are broken), but this is a temporary solution. In 90% of cases, a new thermostat is required.

🔹 How to understand that it is the thermostat that is broken and not the compressor?

If the thermostat is faulty:

  • 🔸 Compressor does not turn on at all (if the thermostat is open).
  • 🔸 Compressor works without stopping (if the thermostat is tightly closed).
  • 🔸 In the refrigerator compartment too cold (food freezes).

If the compressor breaks down buzzes, but does not freeze or heats and turns off (protection is triggered).

🔹 Where to buy a thermostat for an old refrigerator (for example, ZIL-63)?

For Soviet and vintage models, thermostats are searched for:

  • 🔹 On bulletin boards (Avito, Yula).
  • 🔹 In spare parts stores for retro equipment (for example, Retro-Technics in Moscow).
  • 🔹 On foreign sites (eBay, AliExpress - by request “vintage refrigerator thermostat”)

💡 Advice: Specify marking the old thermostat (written on the case) and search for it, for example, ZIL suitable TAM-112 or TAM-133.

🔹 Why did the new thermostat quickly break down?

Causes of premature failure:

  • 🔸 Voltage drops in the network (solution: stabilizer).
  • 🔸 Incorrect installation capillary tube (it should be tightly adjacent to the evaporator).
  • 🔸 Factory defect (especially in cheap Chinese thermostats).
  • 🔸 Frequent opening the door (the thermostat operates in enhanced mode).

🔹 Is it possible to temporarily do without a thermostat?

Yes, but this is a last resort:

  1. Unplug the refrigerator.
  2. Remove the thermostat and connect the wires to each other 3 and 4 (if they are labeled) or end contacts (if there is no marking).
  3. Turn on the refrigerator. work continuously, so monitor the temperature manually!

⚠️ Danger: Without a thermostat, there is a risk of compressor overheating and fire. Use this method for no longer than 1-2 days.

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