Independent dismantling of the relay in an Atlant two-chamber refrigerator: instructions with photos and advice from experts

A refrigerator Atlant with two chambers is a reliable technique, but even that not insured against breakdowns. One of the common problems is failure starting or protective relay, which is responsible for starting the compressor and protecting against overheating. If the unit does not turn on, hums loudly or clicks, but does not freeze, this small device may be the culprit. Removing the relay yourself is not difficult, but it requires care and knowledge of the nuances of the design.

In this article you will find step-by-step instructions with photos, a list of necessary tools and tips on how to avoid common mistakes. We will look at where the relay is located in models Atlant (for example, MHM 1705, MHM 2835), how to disconnect it without the risk of damaging the compressor, and what to do next - check for functionality or replace it immediately. You will also learn why you can’t remove the relay when the refrigerator is plugged in, even if it is “turned off” with a button.

If you have never dealt with electricians, it is better to entrust the work to a specialist. But for those who are ready to try, our guide will help you save on calling a technician.

Where is the relay in a refrigerator Atlant double-chamber

In most models Atlant (for example, MHM 1840, MHM 2808) the relay is attached directly to compressor a metal “barrel” at the bottom of the rear wall. It can be:

• 🔹 Start-protective (combined, in one case) - more often found in modern models.
• 🔹 Separate: starting (black plastic box) + protective (metal cylinder with contacts).

To find it, move the refrigerator away from the wall and look at the compressor. The relay is usually screwed to its body 1-2 screws or with latches. It is connected to 3-4 wires (depending on the type):

• 🔌 Network cable (220V power supply).
• 🔌 Wires from the thermostat (signal).
• 🔌 Contacts to the compressor (starting and operating windings).

In some models (for example, Atlant MHM 1703) the relay may be hidden under decorative cover the compressor. If you don’t see it right away, carefully remove the plastic panel by pulling it towards you.

Preparation for dismantling: tools and safety measures

Before removing the relay be sure to unplug the refrigerator. It is not enough to simply press the power button - the plug must be physically removed from the socket! The compressor is under high voltage, and even in the “off” state, the capacitors can retain a charge.

⚠️ Attention: If the refrigerator was turned on, wait 10-15 minutes before operating. This time is needed for the capacitors in the power circuit to discharge.

You will need:

• 🔧 Phillips screwdriver (usually screws under PH2).
• 🔧 Flat screwdriver (for prying up the latches).
• 📸 Smartphone —to photograph the wiring diagram.
• 🧲 Marker or stickers —for marking wires.
• 🛠️ Multimeter (if you plan to check the relay).

If the relay is stuck or the screws do not budge, do not use excessive force. Atlant (before 2010) the fastenings could have oxidized. In this case, treat the screws WD-40 and wait 5-10 minutes.

Step-by-step instructions: how to remove the relay from the compressor

The dismantling algorithm is the same for most two-chamber models AtlantWe will look at the process using an example MHM 2835, but it will also work. for other series (MHM 1840, MHM 2808 etc.).

Step 1. Remove the protective cover of the compressor (if any).

Pull it towards you - it is usually held on by plastic latches. In some models, the cover is secured with a screw (for example, in Atlant MHM 1705).

Step 2. Disconnect the wires.

Carefully remove the terminals from the relay contacts. If the wires are stuck, do not pull them - first shake them from side to side. Remember or take a photo of the order. connection! Typical pinout:

- Terminal 1 — common contact (can be marked «C»).

- Terminal 2 — starting winding («S»).

- Terminal 3 — working winding («R»).

Step 3. Unscrew the fastening screws.

The relay is held on 1-2 screws (in combined models) or on a metal clamp (in a separate protective relay, usually a Phillips head). a screwdriver.

Step 4. Remove the relay.

Pull it towards you, holding the compressor with your other hand. If the relay “fits” tightly, check if the fasteners have gone unnoticed. In some models. Atlant installed under the relay gasket —don’t lose it!

What to do if the relay screws scroll?

If the screws scroll, but they don’t unscrew, try:

1. Press the screwdriver more tightly.

2. Use a screwdriver with a magnetic tip.

3. Drop WD-40 and wait 5 minutes. data-i="164">If all else fails, you will have to drill out the screws and replace them with new ones (choose a similar diameter).

If all else fails, you will have to drill out the screws and replace them with new ones (choose a similar diameter).

How to check the removed relay for functionality

Before buying a new relay, make sure that the old one is really faulty. For diagnostics you will need multimeter (or at least. lamp-load 220V).

Checking the protective relay (if it is separate):

1. Switch the multimeter to the mode continuity.
2. Touch probes to the relay contacts. In cold state the circuit should be closed (resistance ~0 Ohm).
3. Heat the relay (for example, hairdryer) - when it reaches ~70–90°C the circuit should open. If this does not happen, the relay is faulty.

Checking the starting relay:

• 🔋 Check coil: resistance between contacts «S» and «C» should be 10–30 Ohm.
• 🔋 Check contacts: between «R» and «C» resistance should be ~0 Ohm (in the closed state).

If at least one of the tests fails, the relay must be replaced. Models Atlant often use relays of types DHR (for old refrigerators) or RTK-X (for new ones). Check the brand by the label on the relay body.

Typical mistakes when removing a relay and how to avoid them

Even experienced craftsmen sometimes make mistakes that lead to damage to the compressor or short circuit. Here's what you shouldn't do:

⚠️ Attention: Never connect the compressor directly to the network 220V without a relay! This will lead to interturn short circuit windings and complete failure of the unit. The cost of a new compressor is up to 70% of the price of the refrigerator.

Common errors:

• ❌ Mixed wires when connecting back. Always label them or take photographs!
• ❌ Using a screwdriver that is too longwhich can short-circuit the compressor contacts.
• ❌ Application of force when removing the relay - this can tear off the terminals or damage the tubes compressor.
• ❌ Operation without discharging capacitors (even if the refrigerator is turned off).

If after replacing the relay the refrigerator does not work, check:

• 🔌 Correct connection of the wires (check the photo).
• 🔌 Reliability of fastening the relay to the compressor (bad contact = overheating).
• 🔌 Condition of the contacts on the compressor (oxidation or burnt).

B 5% of cases problem lies not in the relay, but in thermostat or compressor. If after replacing the relay the refrigerator turns on, but after a few seconds it turns off - check starting capacitor.

How to replace the relay: original vs analogues

Ideally, you need to install a relay of the same type as the original. The marking is indicated on the body (for example, RTK-X-1 or LS-08B). However, in some cases you can use compatible analogues:

When choosing an analogue, pay attention to:

• 🔹 Rated current (must match or be higher than the original).
• 🔹 Compressor type (normal or inverter).
• 🔹 Dimensions — the relay must physically fit in the place of the old one.

Cost of the original relay for Atlant —from 500 to 1500 rubles, analogues may be cheaper. Buy parts in trusted stores (for example 220-Volt, All-Spares) or from official dealers Atlant.

⚠️ Attention: In the latest models Atlant (after 2020) relays can be installed with electronic control. They are not interchangeable with mechanical ones! Check the type of relay by the serial number of the refrigerator.

What to do after replacing the relay

Having installed a new relay, do not rush to turn it on refrigerator. First:

1. Check reliability of fastening relay to the compressor.
2. Make sure that all wires are connected correctly (check the photo).
3. Close the protective cover of the compressor (if there was one).
4. Connect the refrigerator to the network and watch its operation 10-15 minutes.

Normal operation after replacement:

• ✅ The compressor starts without a long hum.
• ✅ There are no frequent clicks of the relay (allow 1-2 clicks at startup).
• ✅ The refrigerator picks up the temperature (check through 1-2 hour).

If the compressor does not start or protection is triggered (the relay clicks and turns off the power), possible reasons:

• 🔸 Faulty starting capacitor (check with a multimeter).
• 🔸 Stuck compressor (needs repair or replacement).
• 🔸 The relay is selected incorrectly (the parameters do not match).

If the refrigerator is working, but it is not freezing —check:

• 🔹 Leakage of freon (refilling required).
• 🔹 Operation thermostat (perhaps it does not give a signal to turn on).

FAQ: Frequently asked questions about relay in refrigerators Atlant

Is it possible to repair the relay or just replace it?

The relay cannot be repaired - it is replaced with a new one. Exception: if the problem is in 90% of cases The relay cannot be repaired - it is replaced with a new one. Exception: if the problem is oxidized contacts (they can). clean with sandpaper). However, even after cleaning, the relay often fails again, so it is better to replace it immediately.

How to distinguish a starting relay from a protective relay?

In most models Atlant:

• 🔹 Starting —a black plastic box with a coil inside.
• 🔹 Protective —a metal cylinder with a bimetallic plate.

In combined relays (for example, RTK-X), both functions are combined in one housing.

How much does it cost to replace a relay in a service center?

Cost of work in a service center centers:

• 💰 Diagnostics - 500–1000 rubles.
• 💰 Relay replacement - 1500–2500 rubles (excluding parts).

If you are sure that the relay is faulty, it is cheaper to buy it yourself and replace it according to our instructions.

What will happen if you do not change the faulty relay?

The consequences depend on the type of breakdown:

• 🔥 If it doesn’t work protective relay —the compressor will overheat and burn out.
• ❄️ If it doesn’t work starting relay —the refrigerator will not turn on, food will melt.

Where to buy a relay for the Atlant refrigerator?

Official and verified sources:

• 🛒 Service centers Atlant (warranty on parts).
• 🛒 Online stores: 220-Volt, All-Spares, Spare parts for refrigerators.
• 🛒 Local workshops refrigerator repair (sometimes they sell used spare parts).

Beware of counterfeits on marketplaces - check the reviews and reputation of the seller.