A sudden stop of the refrigerator Whirlpool is always stressful, because food supplies are at risk. Most often, the cause of the breakdown is the failure of the starting relay, which is responsible for starting the compressor. If you hear a characteristic click, after which the motor hums but does not start, or the unit is completely silent, then the problem most likely lies in this unit. Replacing the relay is one of the most accessible procedures for self-repair of household appliances, which does not require complex specialized equipment.
Before taking active steps, you need to make sure that the process is safe and accurately diagnose the malfunction. Refrigerators Whirlpool are reliable, but even their electrical components wear out over time. In this article, we will look in detail at how to properly remove the old relay, check its functionality and install a new part so that your refrigerator works flawlessly again. Critical important: before any work, the refrigerator must be completely disconnected from the power supply for at least 15-20 minutes to discharge the capacitors.
The process of restoring the unit's functionality begins with theoretical preparation and understanding of what role does this small element play in the cooling system? Start relay supplies the necessary impulse to the motor winding, allowing it to gain speed. If this mechanism is jammed or its internal contact group is burnt out, the compressor will not be able to start. Understanding the physics of the process will help you avoid installation errors and correctly interpret the behavior of equipment after repair.
Diagnosis of a faulty starting relay
The first sign that the relay has failed is the uncharacteristic behavior of the motor-compressor. Instead of the steady hum of a running unit, you may hear short bursts of humming interrupted by a loud click. This triggers the thermal protection relay, which cuts off the power as the motor cannot start and is drawing excessive current. In some cases, the refrigerator Whirlpool may simply not respond to being plugged in, although the light inside is on.
To finally confirm the diagnosis, you can conduct an initial visual and acoustic check. Carefully reach the bottom of the refrigerator where the compressor is located. If, when you turn on the network, you hear a click, a hum for 2-3 seconds and then a click again with the sound fading - this is a classic symptom of “not starting”. It is also worth paying attention to the smell: if you feel scorched plastic or burnt wiring in the compressor area, this confirms an electrical breakdown.
- 🔊 Characteristic sound: A loud click every few minutes without switching to operating mode.
- 🌡️ Case heating: The compressor may be hot to the touch, although the refrigerator is not cools.
- ⚡ Lack of response: The motor is silent, although the power indicators are on.
Sometimes users confuse a relay malfunction with a breakdown of the compressor or thermostat itself. It is important to understand the difference: if the compressor hums but does not start, and it is hot, the problem is most likely in the starting mechanism. If the motor is cold and absolutely quiet, the defrost heating element may have burned out or the electronic control module has failed. Diagnostics must be comprehensive so as not to change serviceable parts.
⚠️ Attention: If after several attempts to start the compressor remains hot, do not continue experiments. Long-term operation in the “start-stop” mode can permanently damage an expensive motor due to overheating of the windings.
For a more accurate check, you can remove the relay and shake it near your ear. If you hear a knock inside, similar to the clinking of a coin in a glass jar, it means that the contacts are damaged or have fallen off. This is a sure sign that the part must be unconditionally replaced. However, it is better to make the final verdict after a visual inspection of the inside of the relay housing.
Necessary tools and safety measures
Working with electrical appliances requires strict adherence to electrical safety rules. Since the relay is in close proximity to high voltage parts and the compressor itself, the risk of electric shock or mechanical injury is real. Before starting work, make sure that the refrigerator plug Whirlpool is unplugged from the socket. Do not rely only on the mains switch or extension cord - physically unplugging the power cord is a must.
To perform dismantling, you will need a minimum set of tools that any amateur craftsman can find in his home. The main tool will be a flathead and Phillips screwdriver. In some models Whirlpool the fastenings may be specific, so it is advisable to have a set of bits or a multitool on hand. Also, pliers with insulated handles for gripping wires and contacts will not be superfluous.
☑️ Preparation for repair
In addition to tools, prepare the workplace. The back of the refrigerator is often covered with a layer of dust and dirt, so it is worth laying cardboard or an old towel on the floor in advance. This will not only keep it clean, but also protect the floor from possible scratches when moving equipment. If you have a multimeter, take it - it will help check the integrity of the compressor windings after removing the relay.
- 🔧 Screwdrivers: Flat (3-5 mm wide) and Phillips (PH1 or PH2).
- 🧤 Protection: Dielectric gloves and glasses (recommended for safety).
- 📱 Smartphone: For photographing the wiring diagram.
An important aspect is lighting. The bottom of the refrigerator, near the floor, is usually dark. Use a flashlight or hand-held lamp to clearly see wire colors and contact conditions. Poor lighting is a common cause of assembly errors when wires are connected to the wrong sockets.
Access to the compressor and removal of the casing
To get to the relay, you need to remove the protective casing at the rear bottom of the refrigerator Whirlpool. Depending on the model, this may be a metal plate with latches or a plastic box secured with screws. In older models, there is often a metal cover screwed around the perimeter. In new series, manufacturers strive for minimalism, using plastic caps that are held on by friction-fit (pressure fit) or plastic clamps.
The process of removing the cap requires care so as not to damage the plastic clips, which become fragile over time. If you see screws, unscrew them counterclockwise. If there are no screws, try carefully prying the edge of the casing with a flat-head screwdriver wrapped in cloth to avoid scratching the metal. Movements should be progressive, without sudden jerks.
After removing the external protection, the “heart” of the refrigerator will be revealed to your view - the compressor. The relay, together with a thermal fuse, is usually placed directly on the contacts coming out of the motor housing and is closed with an additional plastic or metal retainer. In some designs Whirlpool the relay can be additionally secured with a metal bracket or a U-shaped holder.
What to do if the casing cannot be removed?
If the protective cover does not budge, do not use excessive force. Take a closer look at the perimeter: sometimes screws can be hidden under rubber feet or decorative plugs. It is also possible that the casing has become stuck due to time and dirt - in this case, you can carefully warm the perimeter with a hairdryer (without overheating the plastic) or treat the joints with penetrating lubricant.
Pay attention to the condition of the wires going to the compressor. If the insulation is cracked or melted, this is a signal of overheating, which could cause the relay to break down. In this case, before installing a new part, the wires must be insulated with heat shrink or the terminals replaced. Wiring integrity is the key to the fire safety of your home.
Removing the old start relay
The most critical stage is removing the relay itself from the compressor contacts. It can fit quite tightly, especially if the refrigerator has been used for a long time and in conditions of high humidity. Do not pull on the wires under any circumstances! This will lead to their breakage at the very base, which will require soldering and complicate repairs. You only need to pull on the relay body or the metal frame, if there is one.
First remove the retaining bracket or plastic clip that holds the relay in place. Often, to do this, you just need to bend the two “tendrils” of the metal frame with pliers. After removing the lock, the relay should be easy to remove downwards. If it gets stuck, gently rock it from side to side while pulling downward. You can use a flathead screwdriver to lightly pry the relay housing, but be careful not to break the plastic.
Once the relay is removed from the compressor pins, disconnect the wires from it. There are usually two or three of them, and they are connected via terminal blocks. Before disconnecting, it is strongly recommended to take a photo of the connection so as not to confuse the polarity during assembly. Although the relay often has markings, visual fixation of the initial state is never superfluous.
| Relay type | Description | Characteristic signs of failure |
|---|---|---|
| Posistor | Contains a ceramic element that changes resistance when heated | Crackling inside, lack of startup, burning smell |
| Induction | Works on the basis of an electromagnetic core (old type) | Sticking of contacts, strong heating, humming |
| Combined | Combines the functions of starting and thermal protection | Frequent shutdowns, protection activation for no reason |
When inspecting a removed relay, you can often see traces of soot on the contacts or melted plastic. These are clear signs of an electric arc that occurred when the circuit broke. If a white powdery coating is visible inside the relay, this is a burnt posistor, and the part definitely requires replacement. Such elements cannot be restored.
⚠️ Attention: Do not try to disassemble and repair the relay yourself by cleaning the contacts. Even if visually they look intact, the posistor characteristic is already broken, and restarting can lead to jamming of the compressor.
Installing a new relay and assembling the system
When purchasing a new part, make sure that it fully matches the model of your refrigerator Whirlpool. Relays from different manufacturers may have a similar appearance, but differ in electrical characteristics or mounting dimensions. The ideal option is to buy an original spare part using the catalog number indicated on the body of the old relay. If the original is difficult to find, look for a high-quality analogue with identical parameters.
The installation process is in reverse order. First, connect the wires to the new relay's terminals, making sure they are snug and not loose. Then slide the relay onto the three pins of the compressor. It should go in with a little effort and lock into place. If the relay is “loose” or is not completely seated on the contacts, the compressor may burn out the first time it is turned on due to poor contact.
After installing the relay, return the fixing bracket or plastic holder to its place. Make sure that all wires are laid neatly and do not touch hot parts of the compressor or moving parts (if any). Then replace the protective casing and secure it with screws or latches.
The final stage is connecting the refrigerator to the network. During the first minutes of operation, keep a close eye (and listen) on the compressor. It should start with a characteristic sound and after a while begin to heat up (this is normal for the working discharge area). If the startup was successful and after 10-15 minutes cold appeared in the freezer, the repair can be considered complete.
Common mistakes and expert advice
Even with instructions, beginners often make mistakes that can negate all efforts. One of the most common is ignoring the condition of the capacitor. On some relay models Whirlpool a capacitor is installed nearby, which helps smooth out the inrush currents. If it is swollen or leaking, it also needs to be replaced, otherwise the new relay will not last long.
Another mistake is installing the relay “at random”, without checking the compressor contacts. Before installing a new part, wipe the contacts on the motor itself with an alcohol wipe. Oxides and dirt can prevent normal current flow, and the new relay will burn out after a week. Also make sure that the relay is installed in the correct position (usually the arrow on the body points upward “UP”).
- ❌ Ignoring the markings: Installing the relay upside down can disrupt the operation of the mechanism.
- ❌ Weak contact: If the wire terminals are loose, they need to be tightened pliers.
- ❌ Hasty: Turning on the refrigerator immediately after assembly without waiting (at least 5 minutes) is undesirable for the oil in the compressor.
If after replacing the relay the refrigerator started working, but after a while it stopped again freeze, the problem may be deeper. There may be a freon leak or a blockage in the capillary tube. In such cases, replacing the electrics will no longer help, and the intervention of a technician with equipment for refrigerant charging will be required.
Is it possible to use a relay from another refrigerator?
Using a relay from another model or brand is possible only if the electrical characteristics (current, voltage, compressor type) and mounting dimensions match. However, for Whirlpool it is better to look for the original or a specialized analogue, since the operating algorithms may differ.
Why did the new relay burn out after a week?
There may be several reasons: the compressor itself is faulty (turn-to-turn short circuit), problems with the voltage in the network, or a relay with unsuitable ones was installed characteristics. It is also possible that there was poor contact in the terminals.
How much does it cost to replace a relay in a service?
The cost consists of the price of the part and the work of the technician. Replacing yourself allows you to save on labor, which can amount to up to 50% of the total bill. The part is relatively inexpensive.