Refrigerator relay Nord is a small but critical part that is responsible for starting the compressor and maintaining a stable temperature. When it fails, the refrigerator either stops freezing or works intermittently: it turns on for a couple of minutes, then remains silent for hours. In 80% of cases, a relay malfunction leads to a complete failure of the equipment if it is not corrected in time. Fortunately, you can replace it yourself - without calling a technician and costly repairs.
In this article you will find detailed instructions for replacing the relay in refrigerators Nord (including popular models Nord 233, Nord 243, Nord 361 and others), and also learn how diagnose the breakdownto select an analogue part and avoid common mistakes. We will analyze the process from A to Z: from preparing tools to testing after repair. If your refrigerator suddenly stops freezing or makes strange clicks, most likely the problem is in the relay.
Before you begin, please note: working with electrical appliances requires caution. If you have never held a multimeter in your hands or are not confident in your abilities, it is better to entrust the repair to a professional. However, for those who are ready to try, our instructions will become a reliable assistant. On average, replacing a relay takes 30–60 minutes and costs 3–5 times cheaper than calling a technician.
Signs of a faulty relay in a Nord refrigerator
The first step is to make sure that the problem is in the relay and not in the compressor or thermostat. Here key symptomsthat indicate a breakdown of the start relay:
- 🔊 Clicks without starting the compressor. The refrigerator tries to turn on (characteristic clicks are heard), but the motor does not start. This is the most common symptom - the relay “sticks” or does not transmit current to the winding.
- ❄️ No cold when the light bulb is on. The light inside is on, but the refrigerator compartment is not cooling. Perhaps the relay does not supply power to the compressor.
- ⚡ The compressor runs for 1-2 seconds and turns off. Typically for “stuck” relay contacts that cannot hold the connection.
- 🔥 Overheating or melting of the relay housing. If you touch the part (after turning off the power!), it is hot or has signs of burning - this is a direct signal for replacement.
- 📉 The refrigerator turns off spontaneously. The relay may falsely operate due to wear of the bimetallic plate or a broken coil.
If you observe at least one of these signs, the probability of a relay malfunction is 70–90%. However, before replacing, it is worth checking two more nodes:
- Thermostat. Turn the temperature control knob to maximum - if the compressor starts, the problem is not in the relay.
- Compressor. If the motor is faulty, the relay may click, but the compressor itself will not hum. In this case, you will need to diagnose the windings with a multimeter.
For accurate diagnostics, you can check the relay with a multimeter (more on this in the next section). But if the refrigerator is older than 10 years, and the relay has never been changed, most likely replacing it will solve the problem.
⚠️ Attention: If the relay body is swollen or has cracks, it cannot even be checked - only replaced. Such a part can cause a short circuit.
How to check the Nord refrigerator relay with a multimeter
Before buying a new relay, you should make sure that the old one is really faulty. For this you will need multimeter (even a budget model for 300–500 rubles will do). Here's how to check:
- Unplug the refrigerator and wait until the capacitors are discharged (5-10 minutes).
- Remove the relay from the compressor (read how to do this in the next section).
- Inspect the contacts. If they are burnt or oxidized, the relay must be replaced.
- Ring the coil:
- Set the multimeter in resistance measurement mode (200 Ohms).
- Connect the probes to the coil terminals (usually the two outermost ones contact on the relay).
- Normal resistance - 30–60 Ohm. If the device shows "1" (open circuit) or "0" (short circuit), the relay is faulty.
- Switch the multimeter to the "continuity" mode (with a sound signal).
- Connect the probes to the power and common contacts (usually the central and one of the outermost ones).
- When the contacts are closed (you can lightly tap the relay), the resistance should drop to zero. If this does not happen, the contacts are “stuck.”
If at least one of the tests shows a malfunction, the relay must be replaced. In rare cases, the problem may be starting capacitor (if your model has it). It can also be checked with a multimeter in capacitance measurement mode (norm - 15–40 μF depending on the model).
| Fault type | Symptoms | Actions |
|---|---|---|
| Coil break | The multimeter shows "1" (infinity) | Replacing the relay |
| Short short circuit | The multimeter shows "0" or close to zero | Replacing the relay |
| Sticking contacts | Resistance does not drop to zero when dialing | Replacing the relay or cleaning contacts (temporary solution) |
| Burning of contacts | Visual traces of soot, burning smell | Replacing the relay |
| Faulty capacitor | Capacity below 10 µF or "open" | Replacing the capacitor |
⚠️ Attention: If you are not sure of the test results, take a photo of the relay and its contacts, and then show the photo to the seller at the spare parts store. It will help you choose an exact analogue.
Selection of relays for the Nord refrigerator: articles and analogues
Relays for refrigerators Nord there are two types: start-up protection (PZR) and start-up (PR). The former combine the functions of starting the compressor and protecting against overheating, the latter only start the engine. Most models Nord (for example, Nord 233, Nord 243) use PZR type DANFOSS 103N0020 or its analogues.
In order not to make a mistake with your choice, pay attention to:
- 🔍 Marking on an old relay. Usually this is a set of numbers and letters, for example:
103N0020,RL3-1A,3TS-15K. - 📏 Dimensions and shape. The relay should fit perfectly onto the compressor terminals. The most common dimensions: 50×30×20 mm.
- ⚡ Rated current. For household refrigerators Nord this is usually 1–3 A.
- 🔌 Mounting type. Most relays are attached with latches or screws to the compressor.
Here is a relay compatibility table for popular models Nord:
| Refrigerator model | Original relay | Analogues (articles) | Notes |
|---|---|---|---|
| Nord 233, Nord 243 | DANFOSS 103N0020 | RL3-1A, 3TS-15K, RBM-1-1 | The most common type. Suitable for compressors DWM 1/6. |
| Nord 361, Nord 381 | DANFOSS 103N0022 | RL3-1B, 3TS-20K | For compressors DWM 1/8. Features increased current. |
| Nord 500, Nord 510 | DANFOSS 103N0024 | RL3-1C, RBM-1-3 | For powerful compressors. Often comes complete with a capacitor. |
| Nord (old models before 2010) | RTK-X, RTP-1 | KT 11-22, TRP-1A | Outdated relays. There may be problems with compatibility. |
Where to buy a relay for Nord:
- 🛒 Specialized spare parts stores (for example, "Cold-Service", "Rembyttekhnika"). Price: 300–800 rubles.
- 🌍 Online platforms (AliExpress, "Beru", "Yandex Market"). Be careful with Chinese analogues - check the reviews.
- 🔄 Used markets. Sometimes they sell used relays from disassembled refrigerators. Risky, but cheap (100–200 rubles).
Important: If your refrigerator Nord was produced after 2018, it may have a relay with electronic protection (for example, EVR-3). Such parts are not interchangeable with mechanical ones!
Tools and preparation for replacing the relay
To replace the relay in the refrigerator Nord you will need:
- ⚒️ Screwdrivers: cross (PH2) and flat (3–5 mm).
- 🔌 Pliers or pliers (for removing terminals).
- 📸 Smartphone (to photograph the location of the wires).
- 🔍 Flashlight (the compressor is usually located at the bottom, where it is dark).
- 🧤 Rubber gloves (protection against accidental electric shock).
- 🧲 Magnet (so as not to lose the screws).
Also prepare your work area:
- Unplug the refrigerator and move it away from the wall (you need free space in the back).
- If there is carpet or linoleum on the floor, place cardboard or fabric to prevent scratching coating.
- Prepare a container for small parts (screws, nuts).
Safety first:
- 🚫 Do not work under voltage. Even if the refrigerator is turned off, the capacitors can retain a charge..
- 🕒 Wait 10-15 minutes after turning off for the capacitors to discharge.
- 👀 Do not touch the refrigerant pipes - they may be sharp or hot.
Unplugged the refrigerator from the outlet|Waited 10-15 minutes for the capacitors to discharge|Prepared the tools and photographed the wires|Moved the refrigerator away from the wall|Put on rubber gloves-->
⚠️ Attention: If your refrigerator Nord with a system No Frost, before replacing the relay wait for complete defrosting (8–12 hours). Otherwise, moisture may get on the contacts of the new relay and cause a short circuit.
Step-by-step instructions for replacing the relay in a Nord refrigerator
Now let's move on to the process itself. Follow the instructions step by step, and you will succeed.
Step 1: Access to the compressor
The compressor is located at the bottom of the refrigerator, behind the decorative panel. To get to it:
- Remove the bottom cover (it is secured with latches or screws).
- If there is a protective casing on the compressor, unscrew it (usually 2-4 screws).
- You will see a black cylinder (compressor) with a relay attached to it (plastic box with wires).
Step 2: Disconnecting the old relay
Carefully remove the relay:
- Take a photo of the location of the wires (it is important not to confuse them when reassembling!).
- Disconnect the wire terminals. If they are stuck, help with pliers, but do not pull too hard.
- Unscrew the screws securing the relay to the compressor (usually 1-2 screws).
- Remove the relay. If it is “stuck”, pry it off with a flat screwdriver.
Attention to the wires! In refrigerators Nord usually there are 3 wires: general (black or brown), starter (orange or red) and working (white or blue). Remember their location!
Step 3: Installing a new relay
Take the new relay and install it in the reverse order:
- Attach the relay to the compressor and align the holes for the screws.
- Tighten the mounting screws (do not overtighten!).
- Connect the wires in the same order as they were on the old relay. If in doubt, check the photo.
- Make sure the terminals are firmly seated on the contacts.
Step 4: Inspection and Assembly
After installation:
- Make sure that no wires touch the compressor housing or metal parts.
- Close the compressor with a protective casing (if there was one).
- Install the decorative panel.
- Connect the refrigerator to the network.
If everything is done correctly, the compressor should start in 5-10 minutes (time depends on thermostat). You will hear a slight hum and feel vibration.
What to do if the compressor does not start?
If after replacing the relay the compressor does not start, check:
1. The wires are connected correctly (check the photo).
2. Reliability of contacts - perhaps the terminals are not completely seated on the connectors.
3. Availability of power in the outlet (check with a light bulb or other device).
4. Thermostat serviceability (turn the knob to maximum - if the compressor starts, the problem is in the thermostat).
If everything is in order, but the motor does not work, the compressor itself or the starting capacitor may be faulty.
Typical errors when replacing a relay and how to avoid them
Even with the apparent simplicity of the process, many make mistakes that lead to repeated breakdowns or failure of the compressor. Here are the most common of them:
- 🔌 Messed up wires. If you connect the starting and working wires in the wrong places, the compressor will either not start or will work incorrectly (for example, only on the starting winding), which will lead to its overheating.
- 🔩 Overtightened screws. Excessive tightening force may damage the relay housing or terminals.
- 🧲 Using a magnet near the relay. A strong magnetic field can affect the operation of the bimetallic strip in the relay.
- 💦 Moisture on the contacts. If you defrosted the refrigerator before repair, make sure that all parts are dry.
- 🔄 Purchasing an incompatible relay. For example, installing a 1 A relay instead of the required 2.5 A will lead to its rapid failure.
How to avoid problems:
- 📸 Take photographs of each step, especially the location of the wires.
- 🔧 Use a torque screwdriver (or tighten the screws "by hand" without fatal force).
- 🧪 Check the new relay multimeter before installation - defects happen even with well-known brands.
- ⏳ Let the refrigerator stand for 30 minutes after replacing before turning on - this will allow the refrigerant to be distributed evenly.
What to do if, after replacing the relay, the compressor hums but does not start?
This may indicate to:
- Malfunction starting capacitor (need to be checked with a multimeter).
- Turn-to-turn short circuit in compressor windings (diagnostics required specialist).
- Stuck compressor piston (the motor needs repair or replacement).
What to do after replacing the relay: testing and care
Successfully replacing the relay is only half the battle. Now you need to make sure that the refrigerator is working correctly and take measures to extend the life of the new relay.
Testing the refrigerator
After turning on:
- Listen to the compressor. It should work smoothly, without any extraneous sounds (knocking, creaking).
- Check whether the refrigerator is freezing. Place the thermometer in the freezer - after 2 hours the temperature should drop to -18°C.
- Pay attention to the operating cycle. Normal: 10–15 minutes of work, then 20–30 minutes of rest.
Prevention for long-term operation of the relay
So that the new relay lasts longer:
- 🧊 Defrost the refrigerator regularly (even if it has No Frost). Ice on the evaporator increases the load on the compressor.
- 🔌 Use a voltage stabilizer. Power surges are the main reason for relay failure.
- 🌡️ Do not place the refrigerator near heat sources (battery, stove). Overheating accelerates wear of parts.
- 🧹 Clean the rear grille from dust once every 6 months. A dirty condenser causes the compressor to wear out.
If the refrigerator operates normally after replacing the relay, but after 1-2 weeks it starts clicking or turning off again, check:
- 🔋 Network voltage (should be 220V ±10%).
- 📉 Room temperature. If the room is hotter than +30°C, the compressor may overheat.
- 🔧 The condition of the sealing gum on the door. A worn seal leads to increased load on the system.
Relay service life in refrigerators Nord — 5–10 years. If you replaced it with a high-quality analogue and monitor the condition of the refrigerator, the next replacement will not be needed soon.
FAQ: Frequently asked questions about replacing the relay in a Nord refrigerator
Is it possible repair the relay without buying a new one?
In most cases, the relay cannot be repaired, since it is sealed in a plastic case. However, if the problem is only in burnt contacts, they can be cleaned with fine sandpaper (zero sandpaper). This is a temporary solution - after 1-3 months the relay will still have to be replaced.
If it is faulty coil or bimetallic plate, repair is impossible - only replacement.
Which brand of relay is best to buy for Nord?
The most reliable brands:
- DANFOSS (original for most models Nord).
- Embraco (good quality, but more expensive).
- RBM (budget analogue, suitable for older models).
- 3TS (Chinese relays of average quality, cheap).
Avoid no-name relays without markings - they often fail after a few months.
How much does it cost to replace a relay in a service center?
Cost of work in workshops:
- Diagnostics: 500–1000 rubles.
- Replacement of relay: 1500–2500 rubles (depending on the model).
- Travel of a technician to your home: +1000–1500 rubles.
Total: 3000–5000 rubles taking into account the cost of the part. Independent replacement costs 3-5 times cheaper.
What will happen if you do not change the faulty relay?
If you ignore the problem:
- The compressor will try to start repeatedly, which will lead to overheating of the windings.
- After 1-3 months it may burn out compressor starting winding —then the motor will need to be replaced (cost - from 8,000 rubles).
- In rare cases, a faulty relay can cause short circuit and damage the electronics of the refrigerator.
Conclusion: replacing the relay is prevention of more serious breakdowns.
Is a relay from another refrigerator (for example, Atlant or Indesit) suitable?
Sometimes yes, but only if:
- The relay has same technical characteristics (current, resistance coils).
- Suitable for sizes and type of fastening.
- Calculated for such the same type of compressor (for example,
DWM 1/6).
For example, a relay from Atlanta (article number RTK-X) may fit older models Nord, but it is not a fact that it will work for a long time. It is better to buy a part recommended for your model.