The appearance of an extraneous hum, whistle or complete cessation of cold air circulation in the refrigerator chambers Ariston often indicates a malfunction of the blowing system. In models with technology No Frost it is the fan that is responsible for the uniform distribution of cold from the evaporator to the products. If this unit fails, the temperature in the chamber ceases to drop to the set values, and the products begin to deteriorate.
Independent replacement or lubrication of the engine can save the situation without calling a technician, but the procedure requires accuracy and understanding of the design. In refrigerators Hotpoint-Ariston access to the fan is usually hidden behind the back panel of the freezer, and several disassembly steps are required to remove it. It is important not to damage the fragile plastic latches and to properly disconnect the electrical connectors.
Before taking active steps, you must make sure you have the necessary tools and prepare the work area. Fans in Ariston refrigerators often have a non-standard impeller fastening, which requires caution when removing. Incorrect dismantling can lead to broken blades or damage to the motor shaft, which will complicate repairs.
Diagnostics of a fan malfunction
The first sign that it is necessary to remove the fan in an Ariston refrigerator is a characteristic noise. This could be the friction of the blades against ice, the hum of worn bearings, or the complete absence of sound from the running motor when the compressor is on. In some cases, the system defrost does not work correctly, and ice blocks the rotation of the impeller.
For accurate diagnostics, you can temporarily open the freezer door. Many models Ariston have a door opening sensor that turns off the fan. If there is no noise when the door is closed, but a hum appears when the door is open, or, conversely, the motor stops where it should make noise, the problem is obvious. It is also worth checking whether cold air is coming from the holes on the back wall.
If the fan hums but does not spin, the shaft may be jammed or the winding may be burned out. In a situation where the blades are difficult to rotate manually, the plain bearings need to be lubricated or replaced. Ignoring these symptoms leads to overload of the compressor and failure of more expensive components of the refrigeration unit.
Necessary tools and preparation
High-quality repairs are impossible without properly selected tools. To disassemble the refrigerator Ariston you will need a set of screwdrivers with different types of blades, since manufacturers often use screws with slots Torx or Phillips variants of different sizes. A flat spatula is also useful for carefully snapping off the plastic panels.
Be sure to prepare a container for collecting melt water and towels, since when removing the back panel of the freezer, snow may fall out or ice may leak. Don't forget about a multimeter if you plan to check the resistance of the motor windings or the integrity of the thermal fuse, which is often located next to the blower unit.
☑️ Repair tools
Safety is priority number one. Before starting any work, the refrigerator must be completely disconnected from the power supply. Even briefly touching live contacts with wet hands or a metal tool can lead to serious consequences. Leave the equipment turned off for at least 15–20 minutes before disassembling.
Procedure for disassembling the freezer compartment
Access to the fan in refrigerators Ariston with the No Frost system is located in the freezer. First you need to completely empty the chamber of food, remove all shelves, drawers and ice trays. This will provide easy access to the back wall and prevent damage to the products during repairs.
The back panel (European panel) is usually secured with several screws and plastic latches. Carefully inspect the perimeter of the panel: the screws may be hidden under decorative plugs or located deep in niches. After unscrewing the fasteners, you need to pull the panel towards you, starting from the bottom, so as not to break the upper clamps.
Difficulties in removing the panel
If the panel cannot be removed, do not use excessive force. Check that all screws are unscrewed. Sometimes the panel may freeze to the body due to moisture. In this case, you can carefully heat the joints with a hairdryer at a minimum temperature or use defrosting for several hours.
After removing the panel, access to the evaporator and fan will open. If a thick layer of ice is visible on the evaporator and the fan is blocked, it is recommended to allow the ice to melt naturally or use a hairdryer with caution. Mechanical chipping of ice using a knife is strictly prohibited, as this can puncture the evaporator tubes and release the refrigerant.
Technology for dismantling the fan
The fan itself in refrigerators Ariston can be attached directly to the evaporator body or to a separate plastic bracket. Fastening is carried out using screws or plastic clips. Before removing the motor, you must disconnect the electrical connector, which usually has a locking tab.
Removing the motor often requires removing the protective casing or plastic frame in which it is inserted. Pay attention to the direction of rotation and the position of the impeller. When installing a new or serviced fan, it is important to maintain the original orientation so that the air flow goes in the correct direction.
| Fault type | Symptom | Solution |
|---|---|---|
| Bearing wear | Humming, howling, vibration | Lubricating or replacing the motor |
| Break winding | No rotation, no sound | Replacing the motor |
| Ice on the blades | Crackling, jamming | Defrost, checking defrost |
| Damaged wiring | Unstable operation | Restoring contacts |
If the fan is fixed to rubber shock absorbers, they should also be carefully removed and installed on a new unit. This is important to reduce vibration and noise levels when the refrigerator operates. Over time, rubber elements harden and lose their properties, so their condition should be assessed critically.
Checking the electrical circuit and replacement
Before installing a new fan or putting the refrigerator back together, it makes sense to check the electrical circuit. Using a multimeter in resistance measurement mode (Ohm), ring the motor windings. Normal resistance is usually from 200 to 500 Ohms, the exact values depend on the motor model.
Also check the fan power circuit. In some circuits Ariston voltage is supplied to the motor only when the door is closed and the compressor is running. If the motor is fine but does not turn, the problem may be with the door sensor or control module. In this case, simply replacing the fan will not solve the problem.
⚠️ Attention: When checking with a multimeter, make sure that the refrigerator is unplugged. Applying voltage to the tester probes in resistance measurement mode will damage the device.
When installing a new fan, make sure that the connectors are tightly latched. Poor contact can cause sparking and heating of the wiring. If a universal replacement motor is used, it may be necessary to adapt the mount or the length of the wires using high-quality insulation.
Assembling and testing the system
Assembly is carried out in the reverse order. Reinstall the fan, secure the evaporator panel, and return the back wall of the freezer to its place. Make sure all screws are tight and the plastic latches click into place. Nothing should dangle or creak.
After assembly, turn on the refrigerator. In the first minutes of operation, the sound of the engine gaining speed may be heard - this is normal. Check if cold air has begun to flow into the chamber. If you have a thermometer, you can monitor the decrease in temperature within 30–40 minutes.
It is important to listen to the noise level. If the hum has disappeared and the cold is distributed evenly, the repair can be considered successful. If the problem persists, the defrost sensor or air damper, which regulates the air flow between the chambers, may be faulty.
Common repair mistakes
One of the most common mistakes is trying to remove the fan without completely defrosting it. Residual moisture may enter the electrical part of the new motor or cause a short circuit when first turned on. Always let the equipment dry after defrosting.
Another mistake is using unsuitable lubricants or their excess. Excess grease when heated (during defrost operation) can become liquid and drip onto food or into the drain, causing a blockage. In addition, some aggressive lubricants destroy the plastic of the impeller.
⚠️ Attention: The design of Ariston refrigerators may vary depending on the year of manufacture and the specific series. Always check the location of the fasteners with the diagram in the instructions or the technical data sheet of your model.
Do not ignore the condition of the door seal. If after repair the door does not close tightly, warm, humid air will enter the chamber, which will lead to the fan quickly becoming coated with ice and causing repeated failure. Check the cleanliness and integrity of the rubber.
FAQ: Frequently asked questions
Is it possible to operate a refrigerator without a fan?
Technically, the refrigerator will work, but the cooling efficiency will drop sharply. In the freezer it will be cold only at the walls, and in the center the temperature will be higher than normal. The refrigerator may not receive any cold at all. Long-term operation without blowing will lead to overload of the compressor.
How often do you need to lubricate the Ariston fan?
Modern fans are usually equipped with maintenance-free plain bearings designed for their entire service life (5–10 years). Lubrication is only required when noise occurs as a temporary measure. If the motor requires constant lubrication, it is better to replace it with a new one.
Where can I find the original fan for my model?
Original spare parts can be found by the catalog number, which is indicated on the sticker of the motor itself. High-quality analogues from well-known manufacturers of components for household appliances are also suitable. The main thing is the matching of dimensions, voltage and type of fastening.
Why does the fan only work when the door is open?
This may indicate a malfunction of the door position sensor or stuck contacts. In normal mode, the fan should turn off when the door is opened. If it turns on only when the door is open, the operating logic of the control module may be broken or the wires are mixed up.