Modern refrigerators Hotpoint Ariston are famous for their reliability, but even time-tested equipment has system failures No Frost. One of the first symptoms of failure of this system is the appearance of ice on the back wall or uneven cooling of the chambers. Often the cause of such problems is the stop or incorrect operation of of the evaporator fanwhich is responsible for the circulation of cold air inside the unit.
If you notice that the refrigerator is humming louder than usual, but the cold is not pumping in, or the motor is humming, but the blades are not rotating, then, most likely, intervention in the circulation unit will be required. Independent fan replacement is a task that can be solved at home with a minimum set of tools and a clear understanding of the design of your model. In this article, we will analyze the dismantling process in detail so that you can carry out the repair efficiently and safely.
Before taking active steps, you need to make sure that the problem lies in the mechanical or electrical part of the fan, and not in a burnt Heating element for defrosting or faulty sensor. Correct diagnosis at the initial stage will save you time and money, allowing you to replace only the truly non-working part. Let's figure out how the cooling system in refrigerators works Ariston and what is needed to service it.
Diagnosis of a malfunction and preparation for repair
The first step should always be a thorough diagnosis, since the symptoms of a fan stopping may be similar to problems with the compressor or a clogged capillary system. Turn on the refrigerator and listen: if you hear the motor-compressor operating, but the characteristic operating noise is not heard from inside, this is the first alarm signal. In models with fan, this is the first alarm signal. In models with No Frost the absence of sounds of rotation of the blades often leads to rapid fouling of the evaporator with ice.
Sometimes the fan may work, but make extraneous sounds, such as grinding, crackling or humming. This indicates bearing wear or foreign objects entering the rotating area of the blades. It is also worth checking whether the air duct is frozen, since in this case the fan may be working properly, but physically will not be able to pass air. An accurate inspection often requires partial disassembly to visually assess the condition of the part.
Preparation for repairs begins with ensuring safety. Any work related to the disassembly of electrical appliances requires complete disconnection from the network. You should not rely only on the switch on the case - you need to unplug the cord from the outlet. This is critical as you will be working in close proximity to electrical contacts and a damp environment when removing the fan.
⚠️ Attention: Before beginning any disassembly work, ensure that the refrigerator is completely defrosted. An attempt to remove a plastic casing with a frozen evaporator can lead to chips of the plastic and damage to the cooling system tubes.
To carry out a successful repair, you will need to prepare the following set of tools:
- 🔧 Phillips screwdriver (sizes PZ1, PZ2) for unscrewing the housing screws.
- 🔧 A flat screwdriver or plastic spatula for carefully removing the latches.
- 🔧 Multimeter to check the integrity of the motor windings and contacts.
- 🔧 Hair dryer (construction or household) for carefully defrosting ice if it has formed.
Access to the fan assembly: removing the back panel
In refrigerators Hotpoint Ariston the system fan No Frost is usually located in the freezer compartment, behind the back wall. To get to it, you need to empty the chamber of products, shelves and drawers. In some models, it may be necessary to remove even the top cover of the freezer or completely dismantle the door if it interferes with access to fasteners.
The back panel in the freezer is attached to several screws, which are often hidden under decorative plugs or plastic washers. Carefully inspect the surface of the panel: if you see holes, but do not see screw heads, then they are covered with plastic. Carefully pry up the plugs with a flat-head screwdriver, being careful not to damage them, as they may be needed during reassembly.
After unscrewing all visible fasteners, the panel is not always removed immediately. It can be additionally secured with plastic latches around the perimeter or held on the evaporator tubes. Do not use excessive force: if the panel does not budge, double-check for hidden screws at the bottom or top. A sudden movement can break fragile plastic, which will then have to be restored.
An important point is the condition of the ice. If you see that the evaporator is covered with a thick layer of frost or ice and the fan is directly behind it, you will have to wait until it completely defrosts or carefully use a hair dryer. The plastic must be heated carefully so as not to deform it, and in no case should the hot air be directed directly at electronic components or wiring.
⚠️ Attention: The design of the panels in different models Ariston may vary. In some series, the screws may be located under rubber shelf seals or behind decorative pads on the side walls of the chamber.
The process of removing the panel requires care, since sensor or backlight wires may be connected to it. Before you put the panel aside, make sure it is not connected to anything. If you find wires, carefully disconnect the connectors, first remembering or photographing their location.
Design features of fans in different models
Refrigerators Hotpoint Ariston are equipped with different types of fans depending on the year of manufacture and the specific series. The most common are axial fans with a motor running on 220V or 12V (via a control unit). Understanding your motor type is important for the correct selection of replacement and diagnostic method.
Older models often had fans installed with lead wires connected directly to the terminal block. In more modern versions, the connectors may be integrated into a common control board or have a specific connector shape. The method of attaching the motor itself to the plastic body of the air duct also differs: it can be held on by screws, latches or rubber shock absorbers.
Below is a table that helps identify the main differences in designs that you may encounter:
| Characteristics | Standard model | Model with inverter | Compact series |
|---|---|---|---|
| Motor voltage | 220-230 V | 12-24 V (via board) | 220 V |
| Mounting type | Screws + latches | Rubber bushings | Latch only |
| Location | Behind the evaporator | In a separate box | In the upper part |
| Number of blades | 5-6 pieces | 7 pieces (low-speed) | 4-5 pieces |
Another important detail is the presence door heater or additional dampers that can block access to the fan. In two-chamber models with a system Total No Frost the fan of the freezer and refrigerator compartment can be common or separate. If you have a two-compressor unit, then there may be no fan at all in the refrigeration compartment - natural convection or a separate small fan behind the panel works there.
When ordering a new part, be sure to remove the old fan and compare the length of the shaft, the diameter of the seat and the type of connector. Even if the engine model matches the number, the shaft length may differ by several millimeters, which will not allow installing the impeller to the required depth.
The process of dismantling the fan
Once you have gained access to the fan and made sure there is no ice, you can begin to remove it. First you need to disconnect the electrical connector. Refrigerators Ariston often use waterproof connectors that can be difficult to remove. Do not pull on the wires themselves - this may cause them to break at the base. Grasp the plastic part of the connector and, shaking it from side to side, gently pull it off.
The next step is to remove the fan itself from its seat. If it is secured with screws, unscrew them while holding the motor with your other hand so that it does not fall to the bottom of the camera. If the mount is snap-on, use a flathead screwdriver to pry the latches out. In some designs, the fan is simply inserted into rubber shock absorbers - in this case it needs to be turned and pulled out.
Often it becomes necessary to remove the impeller (blades) separately from the engine. This is required if you are only replacing the motor and using the old one as a donor for spare parts, or if you need to check whether the impeller itself has been damaged. The impeller sits tightly on the shaft, sometimes using a retaining ring. To remove it, you may need a puller or carefully prying it with a screwdriver through special holes, if they are provided for in the design.
☑️ Checklist before removing the fan
Pay attention to the condition of the rubber dampers. If they have dried out or lost their elasticity, it is better to replace them along with the fan, otherwise the new part will transmit vibration to the case, creating noise. Also check the condition of the wires going to the fan: they should not be brittle or have cracks in the insulation.
⚠️ Attention: When removing the impeller, do not force the blades sideways - the motor shaft may bend, which will lead to runout and rapid failure of the new fan. Pull strictly along the axis of the shaft.
Checking serviceability and searching for causes of failure
Before installing a new part or putting the refrigerator back together, you need to understand why the old fan failed. A simple replacement may not solve the problem if the cause lies in the electrical circuit. The initial visual inspection should show the absence of mechanical obstacles to rotation and the integrity of the windings.
For electrical testing, use a multimeter in resistance measurement mode. Connect the probes to the motor contacts. Normal winding resistance is usually in the range of 100 to 500 ohms, depending on the model. If the device shows infinity (open) or zero (short circuit), the motor is faulty and requires replacement. It is also worth checking whether the motor is “breaking through” the housing.
A frequent reason for the fan stopping in refrigerators No Frost is not a breakdown of the motor itself, but the freezing of ice on its shaft. Water may flow into the unit due to a malfunction of the defrost system or a clogged drain hole. In such cases, the fan may be working properly, but ice blocks rotation, which leads to overload and eventual combustion of the windings.
How to check the operation of the fan without installation?
If you have a power source of the appropriate voltage (for example, a 12V or 220V power supply in compliance with safety measures), you can briefly apply voltage to the fan contacts. A working motor should start rotating immediately and without any extraneous sounds. Be careful with open voltage 220V!
It is also worth checking the control circuit. In some models Hotpoint Ariston the fan only works when the cell doors are closed (the limit switch is triggered). If the door sensor is faulty or stuck, the refrigerator may “think” the door is open and not turn on the fan. Check the operation of the limit switch by manually pressing it with the door open - the fan should start.
Installing a new part and assembling the refrigerator
Installing a new fan is done in the reverse order of removal. If you are using an original part, there should be no problems with the seats. When installing the impeller, make sure it fits snugly and does not wobble. The gap between the blades and the body must be uniform throughout the entire circle, otherwise whistling or friction will occur.
When connecting the electrical connector, make sure there is reliable contact. The connector should snap into place with a characteristic click. If the contacts are oxidized, they can be gently cleaned with alcohol or a special contact spray, but it is best to avoid using harsh liquids inside the camera. Lay the wires so that they do not touch moving parts and are not pinched by the panel during assembly.
Assembling the rear panel requires care. Make sure that all seals are in place and the panel fits tightly without gaps. This is important for proper air circulation: if there are gaps left, cold air will go in the wrong places and the efficiency of the refrigerator will decrease. Tighten all the screws, but do not overtighten them, so as not to strip the threads in the plastic.
After complete assembly, turn on the refrigerator. The first minutes of operation may be accompanied by normal compressor noise. The fan should start some time after the compressor is turned on (usually after 1-2 minutes, when the sensors detect the need for cooling). Listen to the work: there should be no extraneous vibrations, knocking or buzzing.
Frequently asked questions (FAQ)
Can it be lubricated? fan, if it starts to crack, instead of replacing it?
You can temporarily extend the life of the fan by dropping a couple of drops of sewing machine oil or special grease for bearings into the shaft area. However, in low temperatures, regular oil may freeze, and the effect will be short-lived. In the long term, replacing a worn bearing or the entire fan is a more reliable solution.
Where can I find the fan number to order a spare part?
The part number (part code) is usually indicated on a sticker on the body of the motor itself or on the impeller. The code can also be found in the technical documentation for your refrigerator model Hotpoint Ariston or on the websites of spare parts suppliers using the full model number of the unit.
Why does the new fan not start after installation?
There may be several reasons: the connector is not fully inserted, the door limit switch is faulty, the fuse in the fan circuit is blown or a problem with the control module. Also make sure that you do not reverse the polarity if the fan is DC, although the connectors provide this structurally. Ariston this is provided by design.
How often should you change the fan in the refrigerator?
The service life of the fan depends on the operating conditions and the quality of the part. On average, a high-quality part lasts 5-10 years. However, with frequent power surges, overheating of the compressor or problems with the defrost system (constant moisture), the service life may be reduced to 2-3 years.
Is it dangerous to change the fan yourself?
The replacement process is mechanically simple, but requires compliance with safety precautions when working with electrical appliances. The main danger is electric shock if you do not unplug the refrigerator, or damage to the evaporator tubes during careless disassembly. If you are not confident in your abilities, it is better to turn to professionals.