Thermoregulator in the Pozis refrigerator: where is it located, how to check and replace

Refrigerators of the brand Posis have long earned the trust of users due to their reliability and affordable price. However, even the most proven equipment can fail over time - and one of the common causes of breakdowns is a faulty thermostat. This small but critical element is responsible for maintaining the set temperature in the chambers. If the refrigerator stops freezing, constantly works without stopping, or, on the contrary, turns off too often, the culprit with a 70% probability will be the thermostat.

Finding the thermostat in the refrigerator Pozis is not as simple as it seems: its location depends on the model, year of manufacture and even modification of the compressor. In old Soviet units, the part was usually placed in a visible place, but in modern devices, manufacturers hide it under panels so as not to spoil the design. In this article we will look at where exactly to look for a thermostat in popular series Pozis (from Pozis-10 to Pozis-50), how to check it with a multimeter and what to do if replacement is required. You will also learn what tools are needed for repairs and how not to damage other components of the refrigerator during disassembly.

Before you start your search thermostat, make sure that the problem really lies there. Sometimes similar symptoms are caused by other malfunctions - for example, a freon leak, a compressor breakdown, or a clogged capillary tube. If you are not sure of the diagnosis, use our instructions for initial diagnosis at the end of the article.

Why the thermostat fails: 5 main reasons

Thermostat in the refrigerator Posis is an electromechanical (less commonly electronic) device that is constantly under load. Its resource is limited, and over time the part wears out. Here are the most common causes of breakdowns:

• 🔥 Voltage drops —surges in the electrical network lead to malfunctions in the thermostat contacts. Models with mechanical controls are especially vulnerable.
• ❄️ Freezing of the capillary tube —if the thermostat is installed inside the chamber, moisture can condense on its sensitive element, causing corrosion.
• 🛠️ Mechanical damage —inaccurate defrosting or moving refrigerator sometimes leads to broken wires or deformation of the thermostat housing.
• 🕒 Natural wear —the average service life of the thermostat in refrigerators Posis is 7–10 years. After this, the contacts begin to “stick” or, conversely, do not close.
• 🔌 Oxidation of contacts —in conditions of high humidity (for example, if the refrigerator is in a damp room), the metal parts of the thermostat are covered with an oxide film.

Interesting fact: in Soviet-style refrigerators (for example, Pozis Soviet-style (for example, Pozis-16K or Pozis-20) thermostats broke down less often than in modern models. The fact is that old thermostats had a simpler design with a minimum number of plastic parts that dry out over time. In new refrigerators (for example, Pozis-50 or Pozis-60), manufacturers save on materials, which affects reliability.

⚠️ Attention: If your refrigerator Position was produced before 2010, it may have a thermostat type TAM-112 or TAM-133. These models are compatible with most modern analogues, but have a different connection scheme. Before replacing, check with table compatibility below.

Where is the thermostat located in the Pozis refrigerator: diagrams for different models

The location of the thermostat depends on the design of the refrigerator. In most models Posis it is installed in one of three places:

1. Inside the refrigeration chamber - under the plastic panel or behind the decorative trim. Typical for old models (Pozis-10, Pozis-16) and some modern single-chamber refrigerators.
2. Outside, on the top panel —under the control cover. More often found in two-chamber models (Pozis-50, Pozis-60).
3. Behind the back wall - in a niche next to the compressor. This option is typical for electronically controlled refrigerators (Pozis-52, Pozis-58).

To determine exactly where to look for the thermostat in your model, use our table:

If your model is not in the table, focus on control type:

• 🔄 Mechanical handle —the thermostat is most likely located next to it (either inside the chamber or under the top panel).
• 📱 Electronic display —the thermostat can be built into the board or located behind the back wall.
• ❄️ No Frost system — in such models (Pozis-58), the thermostat is often combined with sensor air and installed in the air duct.

How to get to the thermostat: step-by-step instructions with photos

Disassembling the refrigerator Posis to access the thermostat requires care. If you have never repaired equipment, it is better to prepare the tools in advance and photograph each stage so as not to mix up the wires during assembly. Here is a universal instruction for most. models:

Step 1: Turning off the refrigerator and preparing

Before start work be sure to unplug the refrigerator and wait until it is completely defrosted (if the chambers are covered with ice). This will prevent short circuits and make parts easier to access. Also:

• 🧊 Remove all food and shelves (especially if the thermostat is inside the chamber).
• 📦 Prepare containers for screws and small parts - they are easy to lose.
• 📸 Take a photo location of the wires before disconnecting.

Step 2: Removing the top panel (for models with an external thermostat)

If the thermostat is located under the control panel (as in Position-50), proceed as follows:

1. Remove the plastic temperature control knob by pulling it towards you.
2. Unscrew the screws holding the top cover (usually 2-3 pieces).
3. Carefully slide the panel forward and disconnect it from the body.

Under the panel you will see thermostat - it looks like a small box with a capillary tube coming out of it capillary tube (thin copper tube going into the chamber).

Step 3: Access to the thermostat inside the chamber

In models Pozis-10 or Pozis-16K the thermostat is hidden under a plastic cover on the inner wall. To get to it:

1. Remove the shelves and drawers blocking access.
2. Unscrew the screws securing the lining (they may be hidden under the plugs).
3. Disconnect the light bulb (if it is in the way).
4. Remove the cover - the thermostat will be secured to a metal plate.

Step 4: Disconnecting the wires and capillary tube

When the thermostat becomes accessible:

1. Take a photo of the wiring diagram (or draw it).
2. Carefully remove the terminals from the thermostat contacts. If they are “stuck”, do not pull - it is better to pry them off with a flat screwdriver.
3. Disconnect the capillary tube from the evaporator. It is secured with a clamp or clip.

⚠️ Attention: The capillary tube is filled with freon or special gas. Do not bend or damage it - this will lead to a leak and the need to completely refill the refrigerator. If the tube bursts, further repairs are only possible at a service center.

How to check the Pozis refrigerator thermostat with a multimeter

Before buying a new thermostat, make sure that the old one is really faulty. To do this, you will need a multimeter (even the simplest model for 300–500 rubles will do). The test takes 5–10 minutes and consists of two stages:

Stage 1: Checking the contacts in the off state

Disconnect the thermostat from the wires and switch the multimeter to mode continuities (or measuring resistance at 200 Ohms). Connect the probes to the contacts 3 i 4 (usually they are signed or marked with an arrow).

• 🔌 If on the screen zero or close to zero resistance the contacts are closed (this is the norm for the thermostat is turned off).
• 🚫 If the resistance infinity (OL) the thermostat is faulty.

Stage 2: Check during cooling

For this step you will need ice or a frozen product. Algorithm:

1. Place the sensitive element of the thermostat (a metal can at the end of the capillary tube) in a container with ice.
2. Wait 2-3 minutes - if the thermostat is working, the contacts 3–4 should open (resistance will become infinite).
3. Take the can out of the ice and let it warm up. After 1–2 minutes, the contacts should close again closed.

If the thermostat does not respond to temperature changes, it must be replaced. Also pay attention to state of the contacts: if they are blackened or covered with a green coating, you can try to clean them with sandpaper (but this is a temporary solution).

What to do if there is no multimeter?

Without a multimeter You can check the thermostat “by eye”: unscrew it from the mount and shake it. If you hear knocking or rolling balls inside, the part is faulty (the bellows has become depressurized). Also inspect the contacts: if they are melted or burnt, the thermostat must be replaced.

Replacing the thermostat in the Pozis refrigerator: a step-by-step guide

If diagnostics have confirmed that the thermostat is faulty, it needs to be replaced. Several types of thermostats are suitable for refrigerators: Pozis Several types of thermostats are suitable:

• 🔧 TAM-112 - for older models (Pozis-10, Pozis-16K).
• 🔧 TAM-133 or K59 —for most modern single-chamber refrigerators.
• 🔧 Danfoss 077B6 —for two-chamber models (Pozis-50, Pozis-60).
• 🔧 Electronic sensors (for example, Sensys PTC) - for refrigerators with a display.

Buy new The thermostat can be found in specialized stores (for example, 220 Volt, ElectroMarket) or at AliExpress (but be careful with fakes). The average price is from 500 to 1500 rubles, depending on the model.

Replacement instructions

1. Remove the old thermostatas described in disassembly section.
2. Move the capillary tube from the old thermostat to new (if it is not built-in). To do this:
• Cut the tube at the base of the old thermostat.
• Place it on the fitting of the new one, secure with a clamp.
• Seal the connection. heat shrink tube.

Connect the wires to the new thermostat, focusing on the photo or diagram from the old one.

Install the thermostat in place and secure it with screws.

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

⚠️ Attention: In refrigerators Position with a system No Frost the thermostat is often combined with defrost timer. If you replace only the thermostat and the timer remains faulty, the problem with the operation of the refrigerator will not disappear. In this case, it is better to contact a service center.

Common mistakes when replacing a thermostat and how to avoid them

Even experienced craftsmen sometimes make mistakes that lead to repeated breakdowns or failure of others. refrigerator components. Here's what you cannot do when replacing the thermostat in Pozis:

• ❌ Use a thermostat from another model - even if it looks similar, for example, TAM-112 i TAM-133 have different temperature ranges.
• ❌ Kink the capillary tube - this breaks its tightness and leads to leakage gas.
• ❌ Connect the wires at random —wrong phasing can burn the compressor.
• ❌ Forget about grounding —in metal refrigerators this can lead to an electric shock.
• ❌ Turn on the refrigerator immediately after replacement —wait 10-15 minutes for the freon to stabilize in the system.

Another common mistake - loose fastening of the thermostatIf. the part is loose, vibration from the compressor can damage the contacts. All screws must be tightened, but without excessive force (especially in plastic cases).

If, after replacing the thermostat, the refrigerator:

• 🔴 Does not turn on - check the fuse and the correct connection of the wires.
• 🟡 Works without stopping —the new thermostat may be incompatible or the capillary tube is damaged.
• 🟢 It turns off too often —try adjusting the knob to a lower temperature.

Repair cost: do it yourself or call a specialist?

The cost of replacing the thermostat in the refrigerator Position depends from several factors:

Is it more profitable to repair the refrigerator yourself? Yes, if:

• 🔧 You have experience working with electrical appliances.
• 🛠️ You are confident in the diagnosis (thermostat, not a compressor or board).
• 💰 Budget is limited (savings will be 2000-4000 ₽).

It is worth calling a technician if:

• ⚡ The refrigerator is under warranty (self-repair will void it).
• ❄️ Freon refilling or soldering of pipes is required.
• 🤔 You are not sure of the cause of the breakdown (the technician will carry out a full diagnosis).

The average cost of a specialist’s visit to Moscow and the regions is 1500–2500 ₽ (excluding spare parts). In service centers Pozis the price may be higher, but they give a guarantee for the work.

FAQ: Frequently asked questions about thermostats in Pozis refrigerators

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

Main signs of a faulty thermostat:

• Refrigerator does not turn on at all (compressor is silent).
• Motor works without stopping, but the temperature in the chamber does not drop.
• The compressor turns on for 5-10 seconds and turns off (protection is triggered).
• Inside the chamber ice has formed, but the refrigerator does not turn off.

If the compressor buzzes, but does not start or gets very hot, the problem is most likely in it or in the start-up protection relay.

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

In 90% of cases, the thermostat must only be replaced. However, sometimes temporary measures help:

• 🔧 Cleaning the contacts - if they have oxidized.
• 🔨 Bending the bimetallic plate (in mechanical thermostats).
• 🧲 Checking the magnetic valve (in electronic models).

But these methods give an effect for 1–3 months. A long-term solution requires a new part.

🔌 What to do if after replacing the thermostat the refrigerator does not turn on?

Check the following:

1. The wires are connected correctly (check the photo before disassembly).
2. Voltage in the socket (the machine may have tripped).
3. The condition of the fuse on the compressor (may blow out during a short circuit).
4. Capillary tube - if it is damaged, the thermostat will not work.

If everything is in order, but the refrigerator does not start, it may be faulty compressor or start relay.

📏 Which thermostat is suitable for Pozis-50?

For model Pozis-50 (and similar Pozis-52, Pozis-60) are suitable:

• Danfoss 077B6355 — original thermostat.
• TAM-133-1M — Russian equivalent.
• K59-L1808 - universal replacement.

When purchasing, check whether a thermostat is needed with a capillary tube or without it (in some models the tube is built into the body).

⚡ Can a refrigerator burn out due to a faulty thermostat?

Yes, but this is unlikely. The main risks:

• 🔥 Overheating of the compressor - if the thermostat does not turn it off, the motor may burn out.
• ⚡ Short circuit - with oxidized contacts.
• 💥 Damage to the control board - in electronic models.

To avoid problems, unplug the refrigerator at the first sign of a thermostat malfunction.