Sudden stoppage of the compressor or characteristic clicks when trying to start are sure signs that your Pozis refrigerator operation has failed. Most often, the culprit of such symptoms is a faulty starting relay, which is responsible for starting the engine. Despite the apparent complexity, replacing this part is one of the most accessible operations in the category do-it-yourself repair, which does not require deep knowledge in electronics.
You do not have to call a technician right away, since the procedure takes a little time if you have it on hand basic set of tools. It is only important to accurately determine the model of your unit, since Pozis refrigerators they can be equipped with different types of start-up protection devices depending on the year of manufacture and the installed compressor. Carefully read the instructions below to avoid mistakes.
Before you begin disassembling, you need to make sure the diagnosis is correct. If the engine hums but does not start, or only a single click is heard and then silence, the problem most likely lies in the relay. Internal relay contacts often burn out or stick, which physically blocks starting compressor. Do not ignore these signals, as prolonged operation in this mode can lead to more serious engine damage.
Diagnosing a faulty start relay
The first step should always be visual and acoustic diagnostics. Go to a working (or trying to work) unit and listen. If you hear periodic clicks at intervals of several seconds, this means that the thermal protection is triggered due to the impossibility of starting. Start relay at this moment it tries to apply a pulse, but cannot, and the circuit opens.
For a more accurate check, you will need to remove the part and inspect it. Often traces of burning, melting of plastic, or a characteristic smell of burnt insulation are visible on the body. If the relay body is cracked or blackened, its further operation is impossible and dangerous. In some cases, there may be no external signs, then you will need to test the contacts with a multimeter.
⚠️ Attention: If, after removing the relay, you find that the contacts inside have turned black, but the part itself is intact, do not try to clean them. Mechanical cleaning gives only a temporary effect, and after a few days or even hours the problem will return, since the geometry of the contact group is broken.
Necessary tools and safety measures
Repairing household appliances requires compliance with strict safety rules. The most important rule is that any work with electrical components is carried out only after the device is completely disconnected from the network. Pozis refrigerator must be unplugged from the socket and the compressor must be completely stopped. This eliminates the risk of electric shock and short circuit.
To carry out the work, you will need a minimum set of tools that any home craftsman can find in his home. Pay special attention to the condition of the tools: they should be dry and in good working order. Also prepare a work area with good lighting so that you can see small parts and markings.
- 🔧 Flat-head screwdriver (for removing the protective cover).
- 🔧 Phillips screwdriver (if the housing is secured with screws).
- 🧤 Dielectric gloves (recommended for additional protection).
- 🔦 Flashlight (for illuminating the compressor compartment).
Particular attention should be paid to the selection of a new spare part. Relay for Pozis refrigerators may differ in connection type and operating parameters. Do not try to install a part “by eye” if it does not fit in the connector - this can lead to sparking and fire. Always check the markings of the old and new parts.
Procedure for dismantling the old relay
The process of removing a faulty part begins with access to the compressor. In refrigerators Pozis the compressor compartment is usually located in the lower rear part of the case. You will need to carefully move the unit away from the wall to gain access to the rear panel. Be careful not to damage the copper pipes of the cooling system.
Remove the rear metal or cardboard cover covering the engine compartment. It is usually secured with several screws or latches. After removing the cover, you will see a black cylindrical or pear-shaped compressor tank. A plastic box will be attached to its end or side - this is our desired starting protection device starter protection device.
Remove the relay protective casing. It can be held on by metal clips or plastic latches. Be careful not to break the fragile plastic, which may have become brittle over time. After removing the casing, you will have access to the wires and the relay itself.
☑️ Preparation for dismantling
Before removing the wires, be sure to remember or photograph their connection diagram. Mixed-up contacts can lead to instantaneous combustion of a new part or motor windings. Disconnect the terminals, slightly rocking them from side to side if they are stuck, but do not pull sharply.
Installation and connection of a new relay
Installation of a new spare part is carried out in the reverse order of dismantling. Insert the new relay onto the compressor pins. It should fit tightly, without play, but also without excessive force. If the part does not fit, check the correct orientation - there are often “Up” markings on the case or an arrow indicating the correct position.
Connect the wires to the terminals according to the previously taken photo or diagram. Make sure the connections are secure and not loose. Poor contact will cause heating and further failure. If there are oxides on the terminals, they can be carefully cleaned with fine sandpaper before putting them on.
| Parameter | Old relay | New relay | Status |
|---|---|---|---|
| Model marking | RTK-X / R-3 | RTK-X / R-3 | Coincident |
| Contact status | Soot, soot | Pure metal | Replacement needed |
| Integrity of the body | Cracks | No defects | Replacement needed |
| Coil operation | Open/Ringing | Clear click | Replacement needed |
After connecting the wires, replace the protective casing and secure it. Make sure the wires are not pinched or touching hot parts of the compressor or sharp metal edges. Assemble the back panel of the refrigerator and return the unit to its place, maintaining clearances for ventilation.
What to do if the new relay clicks, but the refrigerator does not start?
If the situation has not changed after replacing the relay, the problem may be deeper. Perhaps the compressor itself is faulty (an interturn short circuit), there is a break in the windings, or there is a problem in the wiring. It is also worth checking the capacitor if it is included in the design of your model. In this case, professional diagnostics are required by measuring the resistance of the windings.
Typical errors when replacing relays
One of the most common mistakes is ignoring the type of compressor. Pozis refrigerators were equipped with different motors, and a relay from one model may not fit another, even if they are similar in appearance. Installing an unsuitable part will result in the engine either not starting or operating in emergency mode, quickly overheating.
Another common mistake is poor cleaning of contacts or the use of twists instead of standard terminals. The high-power electric current consumed by the compressor during startup instantly heats the areas of poor contact. This results in melted insulation and a potential fire. Use only standard connectors.
- 🚫 Attempting to repair the relay by stripping the contacts (ineffective and dangerous).
- 🚫 Installing the part without checking polarity or orientation.
- 🚫 Ignoring checking the capacitor (if there is one in the circuit).
- 🚫 Plugging in the refrigerator until the casing is completely assembled.
⚠️ Attention: Never leave the refrigerator plugged in with the compressor compartment open and unprotected electrical contacts. This is a direct violation of electrical safety rules.
Checking operation after replacement
After completing all assembly work, it is necessary to conduct a test run. Turn on Pozis refrigerator to the network. In the first seconds, you should hear the engine start confidently without long hums or a series of clicks. The compressor should start operating smoothly, with a characteristic low hum.
Observe the operation of the unit for 10-15 minutes. Check whether the relay itself and the compressor housing in the connection area are overheating. Light heating is allowed, but not to the point where it is impossible to hold your hand. Also listen for the absence of extraneous vibrations or knocking.
If the refrigerator begins to gain temperature, and the operation cycle (turning on and off) is normal, the repair can be considered complete. It is recommended not to completely load the chambers with products on the first day in order to allow the system to enter operating mode and ensure stability of operation.
Frequently asked questions (FAQ)
Is it possible to use relays from another brand, for example, from Atlant or Indesit?
The use of analogues is possible, but only if matching electrical characteristics and mounting locations. Relay must have the same cut-off current and connection type. However, for Pozis refrigerators it is better to look for original spare parts or specialized analogues, since the mounting geometry may differ.
How long does a new starting relay last on average?
The service life of a high-quality relay is from 5 to 10 years or more. However, the resource is greatly affected by power surges in the network and the frequency of switching on/off. A stable voltage and a working thermostat prolong the life of this unit.
Why did the relay burn out if I just changed it a year ago?
Frequent replacement of the relay may indicate a problem not in the part itself, but in the system. Possible reasons: a malfunction of the thermostat (the refrigerator does not turn off), a freon leak (the compressor runs without stopping) or power surges. Diagnostics of the entire system is required.
Is it dangerous to change the relay yourself if the warranty is still valid?
Yes, this is dangerous from the point of view of loss of warranty. Opening the seals on the compressor or independently tampering with the electrical circuit Pozis refrigerator automatically removes the manufacturer's obligations. If the warranty is active, it is better to contact an authorized service.