The situation when a refrigerator Hotpoint-Ariston ceases to perform its main function always takes you by surprise. It becomes warm in the chamber, food begins to deteriorate, and condensation appears on the shelves or, conversely, frost disappears where it should not be. This is not just a household inconvenience, but a signal of a serious malfunction in the operation of a complex thermodynamic system.
Before you panic and call a specialist, it is necessary to carry out an initial diagnosis. Often the reason lies in trivial things: improper installation, power failures or overloading the camera with products. However, if the unit hums, but does not produce cold, or is silent and does not turn on, the problem may be technical.
In this article we will analyze in detail the main causes of failure, from simple settings to complex compressor malfunctions. Understanding the operating principles of your refrigeration equipment will help you quickly identify the problem and make the right decision on repairs.
Primary diagnostics: external factors and settings
The most common reason for the lack of cold is the human factor. Owners often forget that equipment requires certain operating conditions. Check if the door closes tightly. If the seal (elastic band) is worn out, dirty or deformed, warm air constantly enters the chamber. The compressor works hard, trying to compensate for heat loss, but cannot cope.
Pay attention to the temperature regime. If you accidentally turn the regulator to the “0” or “Min” position, the cold will no longer be produced in sufficient volume. It is also worth checking whether furniture or curtains are blocking the ventilation openings if they are located on the sides of the cabinet. For normal operation Ariston free heat exchange with the environment is necessary.
Check the location of the unit. If the refrigerator is located close to the wall or is built into a niche without gaps, the radiator on the rear wall cannot effectively transfer heat. This leads to overheating of the motor and stopping the cooling cycle.
⚠️ Attention: If you recently defrosted the refrigerator and turned it on immediately, do not expect instant results. The unit requires from 2 to 12 hours to reach operating mode and stabilize the temperature in all chambers.
Sometimes the problem lies in the products. If you have loaded a large amount of warm food into the chamber or packed the shelves too tightly, air circulation is disrupted. Cold air simply cannot penetrate deep into the chamber, creating the illusion of a breakdown.
⚠️ Attention: Never place hot pots or warm dishes in the refrigerator. This places extreme stress on the compressor and can lead to its rapid failure.
Problems with the thermostat and sensors
If external factors are excluded, you should pay attention to the temperature control system. In older models Hotpoint-Ariston a mechanical thermostat is responsible for this. This device records the temperature in the chamber and commands the compressor to turn on or off. If the thermostat is faulty, it may not “see” that it is warm in the refrigerator and simply not start the motor.
In modern models with a system No Frost and electronic control, air sensors (thermistors) are used instead of a thermostat. They are resistors whose resistance changes depending on temperature. If such a sensor fails, the control module receives an incorrect signal and the cooling cycle does not start.
Diagnostics of these elements requires the use of a multimeter. It is necessary to “ring” the thermostat contacts or measure the resistance of the sensor at different temperatures. If the circuit is broken or the resistance readings do not correspond to the norm, the part must be replaced.
- 🔧 Signs of a thermostat malfunction: the compressor does not turn on at all, or works without stopping without turning off.
- 🔧 Signs of a sensor failure: an error is on the display, the temperature in the chamber does not correspond to the set values.
- 🔧 A common cause: oxidation of contacts or mechanical damage to the capillary tube of the thermostat.
How to check the thermostat yourself?
To check a mechanical thermostat, you can close its input contacts directly. If after this the compressor starts and cold appears, then the problem is in the thermostat. However, this method requires caution and electrical knowledge.
Replacing the thermostat is a procedure accessible to a home craftsman with basic skills. It is important to choose an analogue with identical parameters, since different models Ariston may have different types of sensors.
Faults of the compressor and start relay
The compressor is the heart of the refrigerator. If it does not work, cold is not physically produced. What often happens is that you hear a click, a hum that lasts for a few seconds, then another click and then silence. This is a classic symptom of a problem with the start relay or the motor itself.
The start relay is responsible for starting the compressor motor. Over time, the contacts inside it may burn or stick. As a result, the relay cannot start the motor, and the thermal protection is triggered, breaking the circuit. Replacing a relay is an inexpensive and quick repair.
A more serious problem is an interturn short circuit in the compressor windings or its mechanical wear. If the motor hums but does not start, or, conversely, is silent when voltage is applied, the entire unit may need to be replaced. This is a complex procedure that requires evacuation of the system and charging with freon.
| Symptom | Probable cause | Difficulty of repair |
|---|---|---|
| Clicking, buzzing for 5-10 seconds, silence | Starting relay or compressor wedge | Low / High |
| The motor runs constantly, there is no cold | Freon leak or capillary clogged | High |
| Complete silence, there is light in the chamber | Malfunction of the thermostat or module | Medium |
| Strong vibration and noise | Wear of compressor pads | Average |
It is important to understand that compressor diagnostics require professional tools. If you are not confident in your abilities, it is better to contact a specialist so as not to aggravate the situation.
Refrigerant leak and system blockage
One of the most insidious problems is a freon leak. The refrigerant circulates in a closed circuit, and if a microcrack forms in the tubes or evaporator, the gas gradually evaporates. As a result, the pressure in the system drops and the refrigerator stops freezing, although the compressor may work properly.
Often a leak occurs in the foamed part of the body or in solder areas. This is impossible to notice visually. An indirect sign may be swelling of the side walls of the refrigerator or the appearance of rust at certain points. Also, there may not be a uniform layer of frost on the evaporator.
Another problem is a clogged capillary tube. An ice plug may form inside the system (due to moisture) or blockage from compressor oil wear products. This prevents the circulation of freon. The symptom is often a hot condenser (grid at the back) only in the upper part, while the lower part remains cold.
⚠️ Attention: Independent refilling of the refrigerator with freon is impossible without special equipment (scales, vacuum pump, pressure gauge station). An attempt to simply “add gas” without eliminating the leak and evacuation will lead to repeated breakdown.
To eliminate these faults, the technician finds the leak using a leak detector, seals it, evacuates the system and fills in the exact amount of refrigerant specified in the technical documentation of the model. Ariston.
Failures in the No Frost system
Refrigerators Ariston with technology No Frost have a complex system for moisture removal and air distribution. If the fan stops working, cold air will not enter the chamber, although the evaporator may be covered with ice. You can check the operation of the fan by opening the door (in many models, when the door is open, it turns off; you need to hold down the door sensor or listen to the noise when it is closed).
The second common problem is a malfunction of the defrost heating element or defrost timer. If the evaporator becomes overgrown with a “fur coat,” air stops circulating through it. As a result, the camera is warm, but inside the case behind the back panel there is a lump of ice. From time to time, such a refrigerator can turn itself off for several hours until the ice melts, and start working again.
- ❄️ Signs: ice on the back wall inside the chamber, lack of air flow.
- ❄️ Signs: extraneous noise or grinding noise during operation (ice getting into the blades fan).
- ❄️ Signs: water under the vegetable boxes (overflow of the drainage tank).
For diagnostics, you need to remove the back panel in the freezer and visually assess the condition of the evaporator. If it is completely clogged with ice, and the heating element does not heat when checked with a multimeter, the part must be replaced.
☑️ Diagnostics No Frost
Electronic control module: the brain of the system
In modern models Hotpoint-Ariston the entire process is controlled by an electronic control unit. It is he who reads the sensor readings and controls the compressor, fans and heating elements. Power surges in the network, moisture ingress during defrosting, or simply a manufacturing defect can damage the “brains” of the refrigerator.
Symptoms of module failure are varied: chaotic blinking of indicators, refusal to respond to buttons, failure to turn on the compressor when the sensors are working, or, conversely, its continuous operation. Sometimes error codes are displayed on the display, which help to localize the problem.
Repairing the control module at home is only possible if you have circuit design training and soldering equipment. Most often, flashing the microcircuit or replacing burnt elements (triacs, capacitors) is required. In some cases, it is easier and more reliable to replace the entire board.
⚠️ Attention: Before any electronic diagnostics, be sure to unplug the refrigerator for 15-20 minutes. This will clear errors and reboot the system, which sometimes solves the problem of a software failure.
If you notice traces of oxidation or burning on the board, or swollen capacitors, you cannot operate the equipment - this can lead to a fire or breakdown of other expensive components.
When a professional is needed repair
To summarize, we can identify situations where independent repair is not only useless, but also dangerous. If the problem lies in the sealed circuit (leakage, blockage), special tools are required. If a compressor or electronic module has burned out, accurate diagnosis is necessary so as not to change serviceable parts.
It is also worth contacting professionals if the refrigerator is under warranty. Any interference with the design, broken seals or traces of self-repair will lead to loss of the manufacturer's warranty.
Regular maintenance, timely defrosting (even for the No Frost system, preventative defrosting is recommended once a year) and careful attitude will extend the life of your Ariston for many years.
How long does an Ariston refrigerator last?
The average service life of modern Ariston refrigerators is 7-10 years with proper operation. Key factors of durability: stable voltage in the network, a clean capacitor and no overload with products.
Frequently asked questions (FAQ)
Why does the Ariston refrigerator hum, but does not freeze?
Most likely, a freon leak has occurred or a blockage has formed in the capillary tube. The compressor is running, but the refrigerant is not circulating through the system. It is also possible that the compressor itself may jam.
What to do if there is ice in the freezer and heat in the refrigerator?
This is a classic sign of a malfunction of the defrost system (No Frost). Check the defrost heating element, defrost sensor and fan. The evaporator is probably clogged with ice, and cold air does not pass into the main chamber.
Is it possible to operate the refrigerator if it does not freeze?
For a short time - yes, if it is necessary for diagnostics. However, prolonged operation of a faulty unit (especially with an inoperative compressor or a leak) can lead to motor combustion or food spoilage.
How often do you need to defrost an Ariston refrigerator with No Frost?
Technically, the No Frost system does not require defrosting. However, manufacturers recommend turning off the refrigerator once every 6-12 months, washing it and letting it stand with the doors open to eliminate odors and check drainage.