How to ring the Stinol refrigerator thermostat yourself: instructions with photos and diagrams

The thermostat (or thermostat) is the “brain” of the refrigerator Stinolwhich controls the temperature in the chambers and controls the operation of the compressor. When it fails, the equipment either stops freezing or works without stopping, risking burning out the motor. Testing the thermostat with a multimeter is the first diagnostic step, which will help you save on calling a technician.

In this article you will find step-by-step instructions with photoshow to properly dismantle, ring and check the thermostat Stinol models 100, 101, 103, 107 and other popular series. We will analyze common testing errors, explain what resistance values ​​are considered normal, and show how to distinguish a thermostat malfunction from a compressor or relay failure. If you have never held a multimeter in your hands, don’t worry: the instructions are adapted for beginners.

Before you start, make sure that the problem is in the thermostat. Pay attention to symptoms:

• 🔴 The refrigerator does not turn on, but the light inside is on
• ❄️ The compressor works without stopping, it freezes too much
• 🌡️ The temperature in the chambers does not correspond to the set temperature (for example, +10°C instead of +5°C)
• 🔊 Relay clicks when trying to start, but the motor does not start

If at least one of these signs is familiar, it’s time to grab a multimeter. But first, let's figure out where the thermostat is located in your model Stinol and how to safely remove it.

1. Where is the thermostat located in the Stinol refrigerator: search and dismantling

In most models Stinol (for example, Stinol 100, Stinol 107, Stinol 110) the thermostat is located inside the refrigerator compartment, behind a plastic panel or next to the light lamp. Less often - in the freezer (in models with a top freezer compartment). To get to it:

1. Unplug the refrigerator and remove all food from the chamber where dismantling will be carried out.
2. Remove the plastic cover covering the thermostat. It can be secured with latches or screws (usually one screw for a Phillips screwdriver).
3. Carefully disconnect the terminals with wires from the thermostat. Remember or take a photo of them location —when reassembling, it is important not to reverse the polarity!
4. Unscrew the nut (or two) holding the thermostat to the bracket and remove it along with the siphon tube (if there is one).

On some models (for example, Stinol 103), the thermostat may be hidden under a decorative trim next to the temperature control knob. If you are not sure of the location, look at section with diagrams below.

⚠️ Attention: Do not pull on the thermostat siphon tube - it is fragile and can break. If the tube is damaged, the thermostat will display incorrect temperature values.

After removal, carefully inspect the thermostat housing. It must be marked (for example, K-59, TAM-133, Danfoss 077B6). This information will be useful if replacement is required. Now you can start dialing.

2. Preparing a multimeter: settings and modes for dialing

To check the thermostat Stinol any multimeter is suitable (even a budget one DT-830B). The main thing is to set the modes correctly:

• 🔋 Dial mode (with sound signal) — to check the continuity of the circuit (broken contacts).
• 🔄 Resistance measurement mode (200 Ohm or 2 kOhm) — to check the resistance of the thermostat.
• 🌡️ Diode test mode (optional) - for testing some models of thermostats.

Before starting work:

1. Make sure that the multimeter probes are working properly - connect them to each other in the testing mode. A beep should sound.
2. Check the battery in the multimeter - a discharged battery may give incorrect readings.
3. Clean the thermostat contacts from oxidation (if any) using an eraser or alcohol.

If you have a dial tester (for example, Ts4353), switch it to the resistance measurement mode at the limit ×10 or ×100. Before measuring, do not forget to zero the device by shorting the probes.

⚠️ Attention: Some thermostats Stinol (for example, models marked TAM-112) have built-in protection against static electricity. Touch the contacts only with the probes of the multimeter, without touching them with your hands.

Now let's move on to the most important thing - dialing contacts. There are nuances here depending on the type of thermostat (mechanical or electronic). We will analyze both options.

3. Testing a mechanical thermostat: step-by-step instructions

Mechanical thermostats (installed in most models Stinol before 2010) are checked in two stages: contact testing and checking operation when the temperature changes.

Step 1. Testing the contacts for breaks

On the thermostat body you will see 3-4 contacts (sometimes 2). We are interested in two main ones:

• 3 and 4 (or 6 and 4 in some models) - normally open contacts that close when a given temperature is reached.

Connect the multimeter probes to these contacts in dial mode:

• 🔊 If there is a sound signal —the contacts are closed, the thermostat currently “thinks” that the temperature is higher than normal.
• 🚫 If there is no signal —the contacts are open (normal for cold thermostat).

Step 2. Checking operation during heating/cooling

For this you will need hot water (not boiling water!) and a thermometer. Algorithm:

1. Immerse the thermostat siphon tube in water at a temperature +50...+60°C.
2. After 1-2 minutes, check the contacts again 3–4 with a multimeter. When heated, they should open (the signal will disappear).
3. Take out the tube and cool it under running cold water or in the freezer. The contacts should closed back (a signal will appear).

If the contacts do not respond to temperature changes, the thermostat is faulty. Also pay attention to smooth movement of the adjusting knob: if it rotates with jamming, this is a sign of wear on the mechanism.

Ring contacts 3-4 in a cold state|Heat the siphon tube to +50°C|Check the contacts open when heating|Cool the tube and check the circuit|Check the smooth rotation of the handle-->

4. Checking the electronic thermostat: features and diagrams

Electronic thermostats (installed in models Stinol after 2010, for example Stinol 107-3 or Stinol 116) are called differently. They do not have mechanical contacts, but control the compressor via triac or relay. To check:

Step 1. Visual inspection

Inspect the thermostat board for:

• 🔥 Burnt tracks or resistors
• 💧 Traces of corrosion or moisture
• 🕳️ Swollen capacitors

Step 2. Continuity of power circuits

Switch the multimeter to resistance measurement mode (200 Ohm) and check:

• Resistance between contacts +12V and GND (should be infinity —no short circuit).
• Temperature sensor resistance (usually 5–10 kOhm at room temperature).

Step 3. Checking the output signal

For this you will need a power supply 12V:

1. Connect +12V i GND to the corresponding contacts of the thermostat.
2. Measure the voltage at the output (contacts OUT or COM). At room temperature it should be 0V (the compressor is turned off).
3. Heat the temperature sensor (for example, bring it to an incandescent lamp). The voltage should appear (~12V), simulating a command to turn on the compressor.

If the output voltage does not change during heating/cooling, the thermostat is faulty. In some models Stinol an electronic thermostat is integrated with the control board. In this case, diagnostics of the entire board will be required.

⚠️ Attention: Electronic thermostats are sensitive to static electricity. Wear an antistatic wrist strap or regularly touch a grounded object (for example, a radiator).

5. Connection diagrams for Stinol thermostats: where to look for contacts

To avoid guessing which contacts to call, use the connection diagrams for popular models Stinol:

If your model is not in the table, look for the markings on the thermostat housing. It is usually printed on a sticker or embossed on a metal plate. Using this marking, you can find the technical data sheet of the part on the Internet.

In Stinol thermostats marked TAM-112 and TAM-125, pin 3 is often used to connect a signal lamp. Its continuity may give false results - focus on pins 4 and 6.

How to find a diagram for a rare model?

If your Stinol refrigerator is of a rare modification (for example, an export version), the diagram can be found:

1. On the nameplate on the back of the refrigerator - there is a model code for searching documentation.

2. In service manuals on forums (for example, Mastercity or Chipmaker).

3. Search Google: “model name” + “service manual” (they often post scans of the original instructions).

6. Typical mistakes when dialing and how to avoid them

Even experienced technicians sometimes make mistakes when checking thermostats. Here are the most common ones:

• 🔌 Power test —never check the thermostat without unplugging the refrigerator! This is life-threatening and can damage the multimeter.
• 🌡️ Ignoring temperature —the mechanical thermostat must be checked in a cold state (after cooling in the freezer for 10–15 minutes). Testing at room temperature will give incorrect results.
• 🔄 Confusion with contacts —always check the diagram before testing! For example, in a thermostat K-59 contacts 3–4 are responsible for the compressor, and 3–6 are responsible for the indicator lamp.
• 💧 Moisture on the contacts - after heating the siphon tube in water, dry it thoroughly. Moisture can cause a short circuit when checking again.

Another common mistake is incomplete diagnostics. For example, if the thermostat rings normally, but the refrigerator does not work, the problem may be in:

• Compressor start relay (check the resistance of the windings).
• The compressor itself (measure the resistance between the windings).
• Wiring (inspect for breaks or melts).

If after replacing the thermostat the refrigerator still does not turn on, check power circuit from the socket to the compressor. Sometimes the problem lies in oxidized contacts of the plug or a broken power cord.

7. How to replace the thermostat in a Stinol refrigerator: brief instructions

If the dial test shows a malfunction, the thermostat needs to be replaced. To do this:

1. Buy a similar thermostat. For Stinol suitable models:
   • 🔹 K-59 (for old models)
   • 🔹 TAM-133-1M (universal)
   • 🔹 Danfoss 077B6 (for electronic systems)

Disconnect the refrigerator from the network and remove the old thermostat (as described in the first section).

Connect the wires to the new thermostat, observing the polarity (see photo of the original connection).

Install the thermostat in place, secure with nuts and connect the siphon tube.

Turn on the refrigerator and check the operation for 1-2 hours. The compressor should turn on and off at intervals of 20-40 minutes.

If after replacing the refrigerator works without stopping or does not freeze, check:

• The correct connection of the wires (especially phase and zero).
• The tight fit of the siphon tube to the evaporator.
• Thermostat settings (the knob must be in position 2–3 for normal operation).

⚠️ Attention: In refrigerators Stinol with a system No Frost the thermostat may be connected to the defrost board. After replacing it, you may need to reset the errors (disconnect the refrigerator from the network for 10 minutes).

The cost of a new one thermostat for Stinol —from 500 to 2000 rubles depending on the model. Replacement at a service center will cost 1500–3000 rubles (excluding the cost of the part).

8. Alternative diagnostic methods without a multimeter

If you don’t have a multimeter at hand, you can check the thermostat in other ways:

Method 1. Direct connection of the compressor

1. Disconnect the wires from the thermostat leading to compressor (usually contacts 3–4).
2. Connect them together with a piece of wire (maintaining insulation!).
3. Plug in the refrigerator. If the compressor works, the problem is in the thermostat.

Method 2. Checking heating/cooling (only for mechanical thermostats)

1. Remove the thermostat and immerse its siphon tube in ice for 10 minutes.
2. Listen for a click inside the case - this is the sound of the contacts closing.
3. Take out the tube and heat it in hands. After 1-2 minutes, an opening click should be heard.

Method 3. Visual diagnostics

Inspect the thermostat for:

• 🔧 Cracks on the body
• 🔥 Darkening or melting of contacts
• 💦 Corrosion on the terminals

These methods are less accurate than testing with a multimeter, but will help confirm the malfunction if the device is not at hand.

If none of the methods helped diagnose the problem, it may not be the thermostat. In this case. check:

• 🔌 Power cord and plug (for breaks or melting).
• 🔄 Compressor start relay (shake it - if you hear a knock, the relay is faulty).
• ❄️ Freon leak (signs: the compressor works, but does not freeze, the tubes do not heat up).

In difficult cases, it is better to contact a specialist. For example, a freon leak requires special equipment for refilling, and diagnostics of electronic boards requires radio installation skills.

FAQ: Frequently asked questions about Stinol thermostats

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

If the compressor does not turn on at all (no sound, tubes do not heat up), the problem may be in the thermostat, relay or the compressor itself. To distinguish:

• 🔊 The compressor hums, but does not start → a problem in the start relay or a jammed motor.
• 🚫 The compressor is silent, the light is inside lights up → a problem in the thermostat or power circuit.
• ⚡ The compressor runs without stopping → the thermostat or temperature sensor is faulty.

Only a continuity test with a multimeter will give an accurate diagnosis.

⚡ Is it possible to repair the thermostat or just replace it?

Mechanical thermostats cannot be repaired —they are only replaced. In some cases, you can:

• Clean the contacts from oxidation (alcohol + eraser).
• Bend the contact plates if they do not reach each other.
• Replace the siphon tube if it damaged.

Electronic thermostats are sometimes subject to repair (replacing the sensor, soldering tracks), but this requires skills in working with a soldering iron.

🛠️ What tools are needed to replace the thermostat?

Minimum set:

• Phillips and flat head screwdrivers (for removing the panel).
• Pliers (for loosening the nuts on the terminals).
• Multimeter (for checking the new thermostat before installation).
• Heat shrink tubing or electrical tape (to isolate connections).

For electronic thermostats, a soldering iron may be needed (if you need to replace the sensor separately).

🌡️ Which thermostat is suitable for Stinol 107?

For Stinol 107 (and similar models 101, 103) are suitable:

• 🔹 TAM-133-1M (original, universal).
• 🔹 TAM-112-1/5 (analog, may require adjustment).
• 🔹 K-59 (for older modifications).

When purchasing, please specify whether the part is intended for single-chamber or double-chamber refrigerator. Also pay attention to the length of the siphon tube - it must match the original one.

❄️ After replacing the thermostat, the refrigerator freezes too much. What to do?

Possible reasons:

• 🔘 The thermostat knob is set to the maximum position (turn it to 2–3).
• 🔄 Incorrect wire connection (check the diagram).
• 🌡️ The new thermostat does not calibrated (adjustment is needed - this is done by a technician).
• 🚪 The door seal is damaged (the refrigerator does not hold the temperature).

If the problem persists, the new thermostat may be defective or does not fit the model.