Atlant refrigerator relay: how to connect and check

A sudden stop of the compressor is always stressful for the owner of household appliances, because this is followed by the risk of damage to products and the need for urgent repairs. Start relay is a critical element in the starting circuit of the electric motor, providing a starting pulse and subsequent switching of the windings. In refrigerators Atlant this unit often fails due to power surges or natural wear of the contacts, which leads to a characteristic clicking noise and lack of cooling.

If you notice that the motor is humming, but not starts, or turns on for just a few seconds and immediately stalls, most likely the problem lies in this component. Independent relay replacement is possible with a minimum set of tools and strict adherence to safety precautions. It is important to understand that correct connection guarantees not only cold in the chamber, but also the long life of the compressor itself.

Before proceeding with disassembly, it is necessary to completely de-energize the unit by unplugging the plug from the socket. It is strictly forbidden to carry out any work under voltage, as this can lead to electric shock. In this article we will analyze in detail the algorithm of actions, typical errors and installation nuances new parts for various models of the Belarusian manufacturer.

Diagnostics and signs of malfunction of the starter protection device

The first step in any repair is the accurate identification of the problem, since the symptoms of a breakdown The relays may be similar to a malfunction of the compressor or thermostat itself. The main sign of failure of the starting mechanism is a characteristic sound: you hear a click, the motor tries to start, it hums, but after 3-5 seconds a second click is heard and the unit goes silent. This works thermal relayprotecting the windings from overheating and burnout.

Visual inspection often provides more information than long measurements with a multimeter. If you remove the cover and remove the part, you may notice blackening of the case, melting of the plastic, or the presence of burning inside. Temperature sensor the bimetallic plate could simply stick in the open state, preventing current from passing to the starting winding. It is also worth checking the contacts for the presence of oxides or carbon deposits, which prevent the normal passage of electricity.

For deeper diagnostics, you will need a multimeter switched to resistance measurement mode. The normal resistance of the inductor should be within 3-4 Ohms, and the resistance of the bimetallic plate should be close to zero (continuity mode). If the device shows an open circuit or infinite resistance in the circuit, the part must be unconditionally replaced. Do not try to revive a burnt out element, as this is a temporary solution.

⚠️ Attention: If after replacing the relay the situation has not changed and the compressor still does not start, the problem may lie in an interturn short circuit of the motor windings or jamming of the piston group.

Relay classification and table compatibility for Atlant

Refrigerators Atlant are equipped with different types of starting devices depending on the year of manufacture and model of the installed compressor. The most common are induction relays of the RT series (for example, RT-K, RT-M) and posistor options. Induction models have a coil and a movable core that mechanically closes the contacts, while posistor models use a heating element to change the resistance.

It is important to select a replacement strictly according to the markings indicated on the body of the old device or in the technical documentation. Using an unsuitable analogue may result in the engine not developing the required power or, conversely, the starting winding burning out. Below is a table of correspondence of the most popular models for different series of refrigerators.

When purchasing a new spare part, pay attention to the number of contacts and their location. Some universal models may have extra terminals that are not involved in your circuit - this is normal, the main thing is that the main ones coincide. Connection diagram must always correspond to the original wiring.

Can I use a relay from another brand?

Yes, if electrical characteristics and mounting dimensions are the same. Parts from Indesit, Ariston or Beko refrigerators are often suitable, but a careful comparison of the markings and type of compressor is required.

Preparation for replacement: tools and safety

For successful repairs, you do not need complex professional tools, a basic kit for a home craftsman is enough. The main thing is to provide yourself with a comfortable workspace with good lighting, since the back wall of the refrigerator is often located in a darkened area or against a wall.

You will need the following tools:

• 🔧 Screwdrivers (flat and Phillips) for removing the casing.
• 🔪 Knife or side cutters for stripping wires (if required).
• 🧤 Dielectric gloves to protect your hands.
• 📸 Smartphone for photographing the circuit before disassembly.

Before starting work, be sure to defrost the refrigerator if there is a lot of ice in the chambers, and move the unit away from the wall. Access to the motor is through the rear panel, which is secured with bolts or latches. Be careful when removing the casing so as not to damage the tube or wiring.

⚠️ Attention: Do not use sharp metal objects to pick out frozen parts or contacts, so as not to puncture the freon circuit tubes. A refrigerant leak will require an expensive refill.

Step-by-step instructions: how to remove and connect the relay

The replacement process begins by removing the protective plastic casing covering the compressor. Usually it is held on by several screws or clamps. After removing the cover, you will see a black cylindrical motor-compressor, to the bottom of which is attached a small plastic box - this is the part you are looking for.

Carefully remove the retaining bracket or bar that presses the relay to the compressor housing. It may sit tightly, so rock it slightly from side to side, pulling it down from the three pins of the compressor. Remember or take a photowhich wire was connected to which contact, since the color markings may differ from one manufacturer to another.

The new relay is installed in the opposite direction ok. Align the holes on the part with the pins of the compressor and push it on tightly until it stops. It is important that the device sits evenly and without distortion. After this, return the fixing bar into place and connect the wires according to the diagram or color marking made earlier.

Connection diagram (standard):
S (Start) - Start winding (usually blue or black wire)
R (Run) - Running winding (usually red or brown wire)
C (Common) - Common contact (power)

After making sure the connections are secure, install the protective casing in place and secure it. Now you can turn on the refrigerator. If you did everything correctly, after 10-20 seconds you should hear a characteristic click and the compressor will start in normal mode, starting to cool the chambers.

Typical installation errors and their consequences

One of the most common errors is incorrect orientation relay when installed. Many models, especially induction ones, are sensitive to position relative to the horizon, since the core must move freely under the influence of gravity. If you turn the part upside down, the mechanism will stick and startup will not occur.

Another common problem is poor contact in the terminal block. If you simply put the wires on the pins without securing them additionally (if the design requires this), the vibration of a running motor can lead to sparking and burning of the contacts. This will cause heating and further failure.

Ignoring the condition of the compressor itself can also be fatal. If the motor “hums” and does not turn even with a new relay, it is possible