The appearance of extraneous sounds, lack of cold or freezing of the “fur coat” in the refrigerator compartment of the model Indesit often takes you by surprise. Many owners immediately call a technician, but a significant part of the problems can be fixed on their own with a minimum set of tools and an understanding of the principles of operation of the device. Repairing an Indesit refrigerator requires a consistent approach and strict adherence to safety measures, since we are talking about electric current and refrigerants.
Before starting to disassemble the unit, it is necessary to carry out an initial diagnosis. Often the reason lies not in the failure of components, but in trivial things: improper installation, contamination of the capacitor or power surges. If your refrigerator has stopped freezing, do not rush to look for complex reasons. First, check whether the door closes tightly, whether the power cord has come loose and whether the indicator on the control panel is on.
In this article we will analyze in detail the algorithms for restoring the functionality of popular models Indesit, such as the series DSB or EF. You will learn how to replace the thermostat, defrost the system No Frost and when you should still turn to professionals. A competent approach will save your budget and extend the life of your household appliances.
Primary diagnostics and work safety
Any repair of household appliances begins with de-energizing. Before removing the back cover or exposing internal components, be sure to unplug the power plug from the outlet. Ignoring this rule can lead to electric shock, since in refrigerators Indesit high-voltage parts are located in close proximity to the metal elements of the case.
Visual inspection often helps to identify obvious defects. Pay attention to the condition of the door sealing rubber. If it is cracked or does not fit tightly, warm air enters the chamber, causing the compressor to wear out. Check whether the unit is level: misalignment can disrupt the oil circulation in the compressor and cause a characteristic knocking sound when starting.
⚠️ Attention: If you smell burnt wiring or see sparking in the area of the start relay, further independent diagnosis without special skills is prohibited. This may indicate a short circuit in the control circuit.
To carry out the work, you will need a standard set of tools: Phillips and flathead screwdrivers, a multimeter for checking circuits, a knife for stripping contacts and, possibly, a hair dryer for defrosting. Do not use sharp objects to chip ice inside the chambers - this is guaranteed to damage the evaporator and leak freon.
The refrigerator does not turn on or works intermittently
The situation when the refrigerator Indesit buzzes, but does not start, or turns on for a couple of seconds and turns off, most often indicates a malfunction start relay or the compressor itself. The start relay is a small plastic block mounted on the side of the motor. Inside it there is a coil and contacts, which can burn or stick over time.
To check the relay, you need to remove it and shake it near your ear. If you hear a rattling sound, the internal mechanical part is damaged and needs to be replaced. It is also worth inspecting the contacts for carbon deposits. If the relay is working properly, the problem may lie in the motor windings or an interturn short circuit, which requires more complex diagnostics with a multimeter.
Another common reason for the “silence” of the unit is the failure of the thermostat. This sensor monitors the temperature inside the chamber and gives a command to turn on the compressor. If its contacts have oxidized or the capillary tube has lost its seal, the control circuit opens. In models with electronic control, instead of a mechanical thermostat, there may be a sensor NTC, which is also checked for resistance.
☑️ Diagnostics of compressor startup
It is important to distinguish between the noise of a running compressor and the sounds made when it breaks down. A dull hum that turns into a click and silence indicates that the engine is trying to start, but it lacks starting torque or is jammed. In this case, prolonged attempts to turn on the appliance can permanently damage the equipment.
Problems with temperature conditions and thermostat
If the refrigerator runs constantly without turning off, or, conversely, sits for a long time without turning on, food spoils or freezes, the problem lies in the thermoregulation system. In mechanical models Indesit a thermostat is responsible for this, the handle of which is usually located inside the chamber or outside on the body. Electronic models are controlled by a module that reads readings from sensors.
Replacing a thermostat is a simple procedure, but requires care. The capillary tube of the new sensor must be fixed in the same place where the old one was, otherwise the temperature readings will be incorrect. Usually the tube is pressed against the evaporator with a special plate. An installation error will cause the refrigerator to “think” that it is already cold inside and will not turn on.
Electronic systems are characterized by malfunctions of the control module or oxidation of the sensor contacts. If an error appears on the display or the temperature indicator blinks, you should check the cable connection. Sometimes it is enough to simply reboot the system by unplugging the device for 15-20 minutes.
⚠️ Attention: When replacing a thermostat, make sure that the model fully matches the original. Different modifications have different capillary tube lengths and contact temperature ranges.
A common mistake is setting the thermostat knob to maximum in hot weather. This forces the compressor to work non-stop, which leads to overheating and increased energy consumption. The optimal position of the handle is average or slightly higher, depending on the load of the chamber with products.
No Frost system malfunctions and ice freezing
Models Indesit with the system No Frost eliminate the need for manual defrosting, but add new components to the design that can break. If you find a layer of ice on the back wall or in the freezer compartment, it means that the defrost system is not functioning correctly. The main culprits: evaporator heating element, defrost sensor or timer.
The heating element (tubular electric heater) is located behind the plastic panel in the freezer compartment. Over time, the filament may burn out. You can check its integrity with a multimeter in dial mode. If the device shows a break, the heating element must be replaced. It is also important to check the defrost sensor, which turns off the heating element when a certain temperature is reached.
A clogged drain hole is another reason for the accumulation of water and ice. Condensate generated during system operation should drain into a tray above the compressor. If the channel is clogged with crumbs or ice, water begins to flow into the chamber or onto the floor. You can clean the hole using a soft wire or a special brush, pouring warm water.
Why does ice freeze in No Frost?
The No Frost system works cyclically: while the compressor freezes, the fan circulates cold air. The defrost mode is switched on periodically when the heating element melts the ice on the evaporator. If one of the elements of this chain (heating element, sensor, timer, fan) fails, the ice does not have time to melt and builds up, blocking the air circulation channels.
The system fan No Frost also requires attention. If its blades become covered with ice or the bearing wears out, air circulation will stop. As a result, the freezer will be cold and the refrigerator compartment will be warm. A frozen fan often makes a characteristic crackling or humming noise before finally stopping.
Replacing the compressor and refilling with freon
The compressor is the “heart” of the refrigerator Indesit. If diagnostics show a malfunction (for example, a breakdown in the housing or piston group wedge), replacement is required. This is one of the most difficult procedures, requiring special tools: a torch, a vacuum pump and a pressure gauge station. It is almost impossible to do this work independently without experience and equipment.
The replacement process includes bleeding out the old freon, soldering out the old motor, soldering in a new one, installing a filter drier and evacuating the system. Only after creating a vacuum is a strictly defined weight of refrigerant charged. An error in the amount of freon or the presence of moisture in the system will lead to rapid breakdown of the new compressor.
It is worth noting that modern compressors can be inverter. They are quieter and more economical, but diagnosing and replacing them is even more difficult. Unlike linear models, they do not have a starting relay in the classical sense, but are controlled by an electronic unit.
| Type of fault | Probable cause | Difficulty of repair | Required tools |
|---|---|---|---|
| Does not turn on, silence | Start relay, thermostat | Low | Screwdriver, multimeter |
| Buzzes, but does not start | Stuck compressor, relay | Medium/High | Multimeter, hammer (for relay) |
| Ice builds up (No Frost) | Defrost heating element, sensor, timer | Average | Hair dryer, multimeter, screwdriver |
| Not cooling, compressor running | Freon leak, capillary clogged | High | Burner, vacuum degasser, freon |
Elimination of noise and vibration during operation
Refrigerators Indesit can make various sounds: gurgling, clicking, hum. Gurgling and gurgling noises are the normal sound of refrigerant flowing through the pipes. The thermal relay or starter makes a clicking sound when turning it on and off. However, a loud hum, rattling or knocking indicates problems.
Often the source of vibration is the case itself or objects standing nearby. Make sure the refrigerator does not touch furniture or walls. Check the adjusting supports: they must be unscrewed so that the unit is stable and tilts back slightly for the doors to close automatically. If the legs are not adjusted, the vibration from the compressor is transmitted to the floor and intensified.
The tube coming from the compressor can make a rattling noise. If it touches the motor housing or other tubes, vibration causes a metallic ringing. Gently bend the tubes by hand (with the device turned off!) to eliminate contact. Also check if anything has fallen behind the refrigerator or on the top panel.
If the noise appears suddenly and is accompanied by deterioration in cooling, the fan motor bearings may have worn out (in models No Frost) or the compressor is overloaded. In the latter case, the sound will be low and humming, gradually increasing in volume.
Prevention and extension of service life
To ensure that refrigerator repair Indesit is not required for as long as possible, it is important to follow the operating rules. Regular defrosting (even for the system No Frost once every year and a half) helps clean hidden cavities from bacteria and residual ice. Washing the condenser (grids at the back) from dust and animal hair improves heat transfer and reduces the load on the motor.
Do not place hot foods in the chamber. This causes a sharp increase in humidity and temperature, forcing the compressor to work in extreme mode, and also leads to abundant ice formation. Observe the product proximity and do not overcrowd the chamber - the air should circulate freely.
Keep the seals clean. Wipe them with a soft, damp cloth to remove crumbs and sticky dirt. Once every six months, you can lubricate the rubber with a special silicone grease or glycerin to prevent it from drying out and cracking. This will keep the chamber sealed.
⚠️ Attention: Do not use abrasive powders, bleach or aggressive chemicals to clean the internal chambers. This can damage the plastic and lead to the appearance of an unpleasant odor that is absorbed into the food.
Timely attention to minor changes in the operation of equipment is the key to a long life of the refrigerator. If you notice that it starts to work louder, does not turn off longer, or moisture appears on the walls, do not wait for a complete breakdown. A preventative check is often cheaper than replacing the main components.
Why does the Indesit refrigerator freeze only in the freezer?
Most often this indicates a freon leak or a clogged capillary system. At the beginning of the freon leak process, there is only enough of it to cool the small volume of the freezer. Also, the reason may be a malfunction of the damper that regulates the supply of cold air to the refrigerator compartment (in models with one compressor).
How to properly defrost an Indesit refrigerator?
Disconnect the appliance from the power supply, remove all food. Leave the doors open. Do not use a hairdryer or hot water to speed up the process if the ice is thick - a sudden temperature change can damage the evaporator. It is better to wait for natural melting, substituting water containers. After defrosting, wipe the chambers dry before turning them on.
What does a flashing temperature indicator mean?
A flashing indicator usually signals that the temperature in the chamber has risen above the permissible limit. This can happen immediately after switching on, after a long defrosting period, or after loading a large amount of warm food. If the indicator does not stop flashing after several hours of operation, check the tightness of the door closure and the operation of the compressor.
Is it possible to transport the Indesit refrigerator lying down?
It is highly not recommended. When transporting lying down, there is a risk of the tubes coming off the compressor or oil leaking into the freon circulation circuit. If transportation lying down cannot be avoided, lay the refrigerator only on its side (usually on the left, when viewed from the side of the door hinges, but it is better to check in the instructions for the specific model) and let it stand upright before turning it on for at least 4-6 hours (preferably a day).