Start protection relay is a critical component of the refrigerator Atlant, which is responsible for starting the compressor and protecting against overloads. If the unit stops freezing, makes clicking noises or does not turn on at all, the problem often lies in this element. Remove the relay with your own by hand - the task is feasible, but requires care: incorrect actions can lead to damage to the compressor winding or a refrigerant leak.
In this article you will find detailed instructions with photosvideos from the masters, as well as a relay compatibility table for different Atlant double-chamber models. We will look at what tools you will need, how to avoid common mistakes and what to do if the relay is “stuck” to the housing. Let us dwell separately on fault diagnosis —after all, the problem is not always in the relay itself.
⚠️ Warning: If your refrigerator Atlant is under warranty, independent repair will void it. Check the conditions at the service center before starting work.
Signs of a relay malfunction: when to remove it
The relay in the refrigerator Atlant fails gradually, and the first symptoms are often are ignored. Pay attention to the following signs:
- 🔊 Clicks without starting the compressor —the relay tries to turn on the motor, but the contacts do not close or “stick.”
- ❄️ Lack of cold with the backlight working—the compressor does not start due to a break in the coil relay.
- ⚡ The compressor hums, but does not start - possible break in the starting winding or a malfunction of the capacitor (often replaced together with the relay).
- 🔥 Continuous operation of the compressor no shutdowns - the relay contacts are stuck in the closed position.
It is important to distinguish a relay failure from a malfunction thermostat or compressor. For example, if the refrigerator Atlant MXM 2835-90 doesn't freeze, but the light is on, first check the thermostat. To do this:
- Disconnect the refrigerator from the network.
- Remove the thermostat cover (usually located inside cameras).
- Close the two wires going to the thermostat to each other (use a screwdriver with an insulated handle!).
- Plug in the refrigerator. If the compressor is working, the problem is in the thermostat; if not, the relay or the motor itself is to blame.
Preparation for dismantling: tools and safety measures
Before removing the relay, prepare the workplace and tools. You will need:
- 🔧 Phillips and flathead screwdrivers (for screws securing the relay and disassembling the case).
- 📸 Smartphone or camera - to photograph the wiring diagram.
- 🧲 Multimeter (to check the resistance relay and compressor windings).
- 🔌 Insulating tape or heat shrink tube — for marking wires.
- 🧤 Rubber gloves (protection against static electricity).
⚠️ Critical warning: Do not touch metal parts of the compressor and relay within 10-15 minutes after unplugging the refrigerator. Capacitors can retain a dangerous charge!
Also note:
- Work in a well-lit place - for example, on a table next to window.
- If the relay is located at the bottom of the refrigerator (as in models Atlant XM 4021-000), prepare a flashlight.
- Do not place the relay on metal surfaces - this may cause a short circuit when inspection.
☑️ Preparation for removing the relay
Step-by-step instructions: how to remove the relay from a refrigerator Atlant double-chamber
The algorithm for dismantling the relay is the same for most models Atlant (MHM 1843, XM 4426, MX 2824 etc.), but there are nuances depending on the type of mounting. Let's consider the universal method:
Step 1: Access to compressor
The relay is installed on the compressor housing at the bottom of the refrigerator. To get to it:
- Unplug the refrigerator from the outlet.
- Move the unit away from the wall (minimum distance - 50 cm).
- Remove the lower decorative panel by unscrewing 2-4 screws with a Phillips screwdriver.
- Disconnect the plastic protection of the compressor (if any).
Step 2: Disconnecting the wires
The relay is connected to the compressor with three wires:
- General (common) —usually black or brown.
- Start - often red or orange.
- Working (run) - white, yellow or blue.
Neat remove the wires from the relay terminals, having previously photographed their location or marked with electrical tape. Do not pull the wires - only the connectors!
Step 3: Removing the relay
The relay is attached to the compressor housing in two ways:
- On the latches (models Atlant after 2018): pry it with a flat screwdriver from the side and pull it up.
- On the screws (old models): unscrew the fastenings with a Phillips screwdriver.
If the relay does not respond, check whether it rests on the compressor pipes. In some cases (for example, in Atlant MHM 2808you will have to move the unit a little.
What to do if the relay breaks during removal?
If the relay body is cracked or the fasteners have broken off, do not try to repair it. Buy a new relay of the same model (see compatibility chart below) and install as a replacement. Using a damaged relay can lead to the compressor burning out.
Relay compatibility table for refrigerators Atlant
Not all relays are suitable for different models Atlant. Below is a compatibility table for popular two-chamber refrigerators. If your model is not in the list, check the parameters in the documentation or on the compressor nameplate.
| Refrigerator model | Compressor type | Suitable relay (article) | Notes |
|---|---|---|---|
| Atlant MKhM 1843-60 | DKhM-35 | RTK-XM (or analogue DANFOSS 103N0022) | Requires replacement along with a 12 µF capacitor |
| Atlant XM 4021-000 | DXM-50 | RTP-1 (or LG R134a) | Suitable for compressors with a starting winding of 20–25 Ohm |
| Atlant MXM 2835-90 | DXM-70 | RTK-XM-2 (Samsung DA64-00019A) | Often breaks down due to overheating - check the ventilation |
| Atlant MX 2824-66 | DXM-45 | RTK-XM-1 (Indesit C00088701) | Can be replaced with a universal relay 3TS-2 |
⚠️ Attention: Relays from refrigerators Samsung or LG may be suitable for connectors, but have different current and voltage characteristics. Using an incompatible relay will lead to compressor combustion within 1-2 weeks.
How to check a removed relay with a multimeter
Before buying a new relay, make sure that the old one is really faulty. diagnostics:
- Set the multimeter in resistance test mode (200 Ohm).
- Connect the probes to the terminals starting and working windings (usually marked as
SandR). - Compare the readings with the standard ones:
- 🔋 Resistance between S and R: should be within 20–50 Ohms (depending on the compressor model).
- 🔌 Resistance between S/M and R (where M is the common contact): if it shows "1" (open) - the relay is faulty.
- ⚡ Checking the coil: between the coil terminals (usually marked as
AiB) the resistance should be 50–200 Ohms.
If the relay is working properly, but the compressor does not start, the problem may be in:
- Starting capacitor (check its capacity with a multimeter).
- Open windings compressor (resistance between the terminals should be 10-30 Ohms).
- Faults thermostat (see step 1 in the section "Symptoms of a malfunction").
Installing a new relay: nuances and typical errors
Installing a new relay is done in the reverse order, but there are key points:
- Check the position of the relay: there is a mark on the compressor body (arrow or inscription
TOP). The relay must be installed strictly according to this mark. - Connect the wires according to the photograph or marking. Do not confuse the starting and working windings!
- Fix the relay screws or latches (do not overtighten, as not to damage the case).
- Check the gaps: there should be a gap of 1-2 mm between the relay and the compressor for ventilation.
Typical installation errors:
- ❌ Mixed-up wires —leads to burnout of the compressor winding.
- ❌ Tightening too tight fastenings —the relay housing may crack.
- ❌ No clearance —the relay overheats and quickly breaks.
- ❌ Using a relay from another model —even if the connectors are the same, the parameters may differ.
After settings:
- Connect the refrigerator to the network.
- Listen: there should be one clear click (contact closure) and the compressor starts.
- If the clicks are repeated without starting, check capacitor or compressor.
Video instructions: how to remove the relay from Atlant two-chamber
For clarity, we recommend that you watch the video from the masters. Below is a selection of proven videos for different models Atlant:
- 📹 General algorithm (suitable for MHM 1843, XM 4021): YouTube link.
- 📹 Replacing the relay with Atlant MXM 2835-90 (with multimeter test): YouTube link.
- 📹 What to do if the relay is “stuck”: YouTube link.
⚠️ Attention: The video may show models with a different relay location (for example, on the side wall of the compressor). Always check the photo of your refrigerator before repeating the steps. If you did not find a video for your model, pay attention to: Compressor type (written on the sticker). data-i="267">Color and shape of the relay (round, rectangular, with 2 or 3 terminals). a photo of your refrigerator before repeating the steps.
If you haven't found a video for your model, pay attention to:
- Compressor type (written on the sticker).
- Relay color and shape (round, rectangular, with 2 or 3 terminals).
- Year of manufacture of the refrigerator (on models before 2015, the relay is often mounted with screws).
FAQ: Frequently asked questions about replacing the relay in the refrigerator Atlant
Is it possible to repair the relay yourself without buying a new one?
In most cases, no. The relay Atlant is a sealed unit with contacts and a coil. If the problem is a break. windings or melting of the contacts, repair is impossible. Exception - cleaning the contacts from carbon deposits (provided that the housing is dismountable). To do this:
- Carefully open the relay housing (if it is not sealed).
- Sand the contacts with sandpaper (600–800 grit).
- Blow out the insides with compressed air.
- Assemble the case and check the functionality.
Please note that after such repairs the relay will not last long (1-3 month).
How much does a new relay cost for Atlant?
The price depends on the model:
- Original relay RTK-XM: 800–1,500 rubles.
- Analogs (DANFOSS, LG): 1,200–2,000 rubles.
- Universal relays (3TS-2): 500–900 rubles (not suitable for all models!).
Buy relays in trusted stores (for example, 220-Volt, All-Spares) or from authorized dealers AtlantAvoid cheap Chinese analogues - they often do not correspond to the declared parameters.
What will happen if you connect the relay incorrectly?
The consequences depend on the type of error:
- The starting and working ones are mixed up windings: the compressor will not start, but the relay will click.
- Short circuit of contacts: the compressor winding will burn out (repair will cost 5,000–8,000 rubles).
- Incorrect fastening: the relay will overheat and fail in 1–2 weeks.
If after replacing the relay the compressor does not start, immediately turn off the refrigerator check the connection diagram.
Do I need to change the capacitor along with the relay?
Not always, but it is recommended. The capacitor and relay work in pairs, and if one of the elements fails, the second is often in a critical state. Signs of a faulty capacitor:
- Bloated housing.
- Capacitance is 20% or more below the nominal value (checked with a multimeter with the function
Capacitance). - Extraneous sounds (humming) when connected to the network.
The cost of the capacitor is 200–500 rubles, so its replacement is justified.
Is it possible to start a refrigerator without a relay to check the compressor?
Yes, but shortly (no more than 1-2 seconds!). To do this:
- Disconnect the refrigerator from the network.
- Remove the relay, leaving the wires connected to the compressor.
- Shortly close starting and working windings with a screwdriver (with an insulated handle!).
- Plug in the refrigerator If the compressor starts, the relay. faulty.
⚠️ Attention: Prolonged short circuit of the windings without a relay will lead to compressor combustion!