Connecting the relay on the Stinol refrigerator: instructions with diagrams and nuances

Refrigerators Stinol are known for their reliability, but even they are not immune from breakdowns. One of the most common malfunctions is the failure of the start-up relay, which is responsible for starting the compressor. If your refrigerator stops freezing, makes clicking noises, or does not turn on at all, the problem may lie in this particular unit. Replacing a relay is a task that even a beginner can handle if you strictly follow the instructions and observe safety precautions.

In this article we will look in detail at how to connect a relay on a refrigerator Stinol of different models (including popular series Stinol 101/103/107), what tools will be needed, and what to pay attention to in order to avoid mistakes. You will also find wiring diagrams, diagnostic tips and answers to frequently asked questions. If you have never dealt with electrics, don’t worry: the process is as simplified as possible and chewed down to the smallest detail.

Signs of a relay malfunction in a Stinol refrigerator

Before you start replacing, make sure that the problem is in the relay. Here are the key symptoms that indicate its failure:

• 🔊 Clicks without starting the compressor: the refrigerator tries to turn on, characteristic clicks are heard, but the motor does not start. This is a sign that the relay cannot keep the contacts in the closed state.
• ❄️ Lack of cold: the compressor does not work at all, the chambers do not cool. Check if the light inside is on - if so, the problem is not in the power supply, but in the start circuit.
• ⚡ The compressor runs non-stop: if the motor hums constantly and does not turn off, the relay contacts may be stuck in the closed position.
• 🔥 The relay body is heating up: touch the unit body - if it is hot, this is a signal of a malfunction (but be careful not to get burned!).

It is important to exclude other causes, for example thermostat malfunction or freon leak. To do this:

1. Unplug the refrigerator and wait 10-15 minutes.
2. Turn it on again - if the compressor does not start on the first try, the problem is highly likely relay.

If you observe at least one of the listed symptoms, it’s time to start diagnosing and replacing. But first, let’s prepare everything you need.

Tools and materials for connecting the relay

You don’t need professional equipment for the job—a basic set is enough. Here's what you need to prepare:

When purchasing a new relay, pay attention to its markings. For refrigerators Stinol most often used:

• 🔧 RTK-X - universal relay for compressors Danfoss and Secop (installed on early models Stinol).
• 🔧 RTP-1 - suitable for compressors ATLAS-COPCO (found in models Stinol 107 and newer).
• 🔧 DANFOSS 103N0010 - original relay for compressors Danfoss, compatible with by the majority Stinol.

Also prepare your workplace: the refrigerator must be disconnected from the network, and access to the compressor must be free. If the model is built-in, you may have to remove the decorative panel.

Relay connection diagram on the Stinol refrigerator

Before removing the old relay, study its connection diagram. Refrigerators Stinol use a standard circuit with three terminals:

• 🔌 Common contact (Common, C) —connects to a 220V network.
• 🔌 Working contact (Run, R) — goes to the working winding of the compressor.
• 🔌 Starting contact (Start, S) —connects to the starting winding.

The relay body usually has contact markings. If there is none, rely on the color of the wires (but this method is less reliable, since manufacturers can use different color schemes):

If you doubt the connection is correct, use a multimeter to check resistance of the compressor windings:

1. Remove the relay from the compressor.
2. Measure the resistance between the terminals:
   • C–R: should be ~10–30 Ohms (working winding).
   • C–S: should be ~20–50 Ohms (starting winding) winding).
   • R–S: the sum of the resistances C–R and C–S (if the readings are different, the windings are faulty).

What to do if the resistance of the windings is not normal?

If the resistance between any terminals tends to zero (short circuit) or infinity (break), the compressor is faulty and requires replacement. In this case, replacing the relay will not help.

Important: on refrigerators Stinol with the No Frost system (models Stinol 107K and similar ones), the relay can be integrated into the control board. In this case, replacing it requires soldering or completely replacing the module. data-i="148">Step-by-step instructions for connecting a relay

Step-by-step instructions for connecting a relay

Now let's move on to practice. Follow the instructions step by step to avoid mistakes:

1. Disconnect the refrigerator from the mains.

   Unplug the plug from the socket and wait until the capacitors are discharged (5-10 minutes). Do not rely on the switch on the case - it only opens the control circuit, but does not completely de-energize the compressor.

2. Remove the compressor protective casing.

   It is attached to 2-4 screws or latches. Carefully set it aside without damaging the wires.

3. Disconnect the old relay.

   It can be secured to the compressor with a clamp or screws. Remove the clips and disconnect the terminals, remembering (or photographing) their location. If the wires are connected through connectors, simply pull them out. If soldered, use a soldering iron (but this is rare for Stinol).

4. Install a new relay.

   Connect the wires to the new relay in the same order as on the old one. Focus on the contact markings (C, R, S). Attach the relay to the compressor.

5. Check the operation.

   Connect the refrigerator to the network. The compressor should start without clicks or extraneous noise. If this does not happen, check the correct connection or integrity of the compressor windings.

If after replacing the relay the compressor does not start, the following reasons are possible:

• ⚡ Incorrect connection of wires (mixed R and S).
• ⚡ Malfunction of the thermostat or control board.
• ⚡ Interturn short circuit in the compressor windings.

Typical mistakes when connecting relays and how to avoid them

Even experienced craftsmen sometimes make mistakes that lead to repeated breakdowns. Here are the most common ones:

• ❌ Ignoring contact markings: connecting wires “by eye” by color often leads to problems. short circuit. Always rely on the designations C, R, S.
• ❌ Using a relay from another. models: even if it looks similar, the operation parameters may not be suitable. For example, a relay from Atlanta is not always compatible with Stinol.
• ❌ Poor contact of the terminals: if the wires do not fit tightly in the connectors, sparking and burning are possible. Check the reliability of the fixation.
• ❌ Forget about grounding: although refrigerators Stinol they often work without grounding, its absence increases the risk of electric shock if the insulation breaks down.

⚠️ Attention: If after replacing the relay the compressor starts, but after 1-2 minutes it turns off with a loud click, this is a sign thermal protection operation. Possible reasons: malfunction of the compressor windings, too low voltage in the network or an incorrectly selected relay (with a low response current).

To avoid mistakes:

1. Always check the new relay multimeter before installation (the resistance between C and R should be ~10–30 Ohms).
2. Use heat-shrink tube to isolate bare sections of wires.
3. If the refrigerator is unstable after repair, check voltage in the socket - it should be within 220V ±10%.

Features of connecting the relay on different models Stinol

Although the operating principle of the relay is the same, depending on the refrigerator model Stinol there may be nuances. Let's consider the most common series:

For models with electronic control (for example, Stinol RF-305) the process becomes more complicated:

• 🔌 The relay can be soldered into the board, and replacing it requires skills in working with a soldering iron.
• 🔌 You may need to flash the module firmware after replacement.
• 🔌 In some cases, it is easier to replace the entire board.

⚠️ Attention: B refrigerators Stinol with inverter compressors (found in new models) use specialized electronic relays. Replacing them at home is not recommended - contact a service center.

How to check the functionality of the relay after connecting

Replacing the relay - only half the battle. Now you need to make sure that everything works correctly. Here's how to do it:

1. Visual inspection.

   After connecting, check:

   • Are there any exposed wires.
   • Are the terminals seated tightly.
   • Is the relay case overheating (normally it should be warm, but not hot).

2. Checking the compressor startup.

   Connect the refrigerator to the network. The compressor should:

   • Start the first time (without repeated attempts). clicks).
   • Work smoothly, without extraneous noise.
   • Turn off after 10-20 minutes (if the thermostat is working).

Checking the temperature.

After 1-2 hours of operation, check the temperature in the chambers:

• In the refrigerator compartment it should be ~+4...+6°C.
• In the freezer - ~−18°C.

If the temperatures are not normal, the problem may be thermostat or freon leak.

If the compressor starts, but after a few minutes it turns off with a click, this may indicate:

• 🔥 Overheating windings (need to check with a multimeter).
• 🔥 Low voltage in the network (use a stabilizer).
• 🔥 Faulty thermostat (replace the thermostat).

When is it better to contact a specialist

Although replacing the relay is a relatively simple procedure, in some cases it is better trust the professionals. Contact the service center if:

• ⚡ The compressor does not start even after replacing the relay, and the windings are in good condition (the control board may be faulty).
• ⚡ Electronically controlled refrigerator (No Frost, inverter compressor).
• ⚡ You have discovered freon leakage (signs: the compressor works without stopping, but does not freeze).
• ⚡ After replacement, the relay is activated RCD or knocks out the machine in the panel.

The cost of replacing the relay in the service varies from 1500 to 3000 rubles (depending on the region and model of the refrigerator). If you are not confident in your abilities, it is better to pay for repairs than to risk costly breakdown of the compressor.

It is also worth considering that in some cases, replacing the relay may be free - if the refrigerator is under warranty: even if the warranty period has expired, some service centers will accommodate the problem. by check.

⚠️ Attention: If you decide to contact the service, do not forget to tell the technician that you have already tried to replace the relay yourself. This will help diagnose the problem faster and avoid double payment for the same work.

FAQ: Frequently asked questions about connecting the relay to Stinol

Is it possible to use a relay from another refrigerator (for example, Atlant or Indesit)?

Theoretically, it is possible, but only if the parameters (operation current, winding resistance) are the same. A relay from Atlanta is often suitable for Stinol, but it is better to check the markings. relay RTK-X universal and compatible with most compressors Danfoss i Secop.

What to do if after replacing the relay the compressor hums, but not starts?

This is a sign interturn short circuit in the windings of the compressor or piston jamming. Try to manually rotate the compressor shaft (this cannot be done through a relay - you need to remove the casing). If the shaft does not rotate or rotates with difficulty, the compressor is faulty and requires replacement.

How to check a relay without a multimeter?

You can use a simple light bulb 220V:

1. Connect the light bulb in series with the relay (one wire to the contact C, the second to R).
2. Shortly apply voltage to the starting winding (C–S).
3. If the light comes on and goes out, the relay is working properly. If not, replacement is required.

Attention: this method is dangerous - there is a risk of electric shock! It is better to use a multimeter.

How much does a relay for a Stinol refrigerator cost?

The price depends on the type of relay:

• RTK-X: 500–800 rubles.
• RTP-1: 600–1000 rubles.
• DANFOSS 103N0010: 800–1500 rubles.

Buy in trusted spare parts stores (for example, 220-volt, All-Spare) or from official dealers Stinol.

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

In most cases, no. A relay is an electromechanical device, and if it fails (contacts burn, spring wear), it is easier to replace it. The exception is if the problem is in oxidized contacts: they can be cleaned with sandpaper (fine fraction) and restored to functionality for a while.