Washing machines Hotpoint Ariston have proven themselves to be reliable household appliances, however, even the highest quality equipment can malfunction over time. One of the most common fault signals is the code errors F08, which lights up on the display and blocks the start of the washing program. This code directly indicates problems in the water heating system, which makes it impossible to fully wash at high temperatures.
Appearance failure in the heating element control circuit often accompanied by a lack of water heating, even if the drum begins to rotate. The machine can draw water and start the timer, but the washing process will take place in cold water, which is critical for removing dirt. Ignoring this signal can lead to more serious consequences, including failure of the control module or short circuit in the wiring.
Owners should not panic when they see a flashing indicator, as in most cases the problem is technical in nature and can be solved. Diagnostics allows you to accurately determine whether the reason lies in the heating element itself, the temperature sensor or a broken contact. In this article, we will analyze in detail all the possible causes of the F08 code and provide a step-by-step algorithm of actions to restore the unit’s functionality.
What does error code F08 mean?
Code F08 in the line of washing machines Hotpoint Ariston indicates a malfunction in the heating element control circuit. The electronic controller constantly monitors the condition of the heating element, and if the current or resistance parameters go beyond acceptable limits, the system emergency stops the cycle. This is a safety mechanism designed to prevent overheating or fire inside the device.
The main essence of the error lies in the mismatch of commands: the control module sends a signal to turn on the heating, but does not receive confirmation that current is flowing through the heater. Or vice versa, current flows when the circuit should be open. Relay on the control board responsible for switching the heating element may stick or not open, which is also recorded by the system as error F08.
Often users confuse this code with water supply problems, however F08 strictly refers to the electrical circuit heater. If the machine draws water but does not heat it, or heats it too quickly and turns off, this is a direct indication of this type of malfunction. It is important to understand that without eliminating this breakdown, washing at temperatures above 30-40 degrees will be impossible.
Main causes of malfunction
There are several key factors that lead to the appearance of the code F08 on the washing machine display. The first and most common reason is failure of the heating element. The heating element has its own resource, and over time the spiral inside it may burn out or a breakdown may occur on the housing. In this case, the circuit breaks and current stops flowing to the heater.
The second important reason is problems with wiring and contacts. Vibration during spinning often leads to loose connections or chafing of the wires coming from the control module to the heating element. Oxidation of contacts also plays a role, especially if the machine is installed in a room with high humidity. Poor contact creates high resistance, which the controller perceives as an open circuit.
The third reason lies in the electronic control module itself. The relay on the board responsible for turning on the heating element may burn out, or the track may be damaged. Sometimes the problem is temperature sensor (thermostat), which is built into the heating element or installed separately. If the sensor transmits incorrect water temperature data, the control module may incorrectly diagnose a heater failure.
The effect of hard water on heating elements
Hard water promotes the rapid formation of scale on the surface of the heating element. The lime layer acts as a heat insulator, which is why the heating element overheats inside the scale and burns out, although it may look intact on the outside. Regular use of water softeners will extend the life of your heater.
Primary diagnostics without disassembling the machine
Before you start disassembling the washing machine Hotpoint Ariston, it is necessary to conduct a primary diagnosis, which often allows you to localize the problem. Start by checking the mains voltage: unstable voltage can cause false alarms in electronics. Make sure the outlet is working and grounded, as a lack of grounding may affect the operation of the sensors.
Next, perform a test run. Select a high temperature program (for example, 60 or 90 degrees) and start the wash. Place your hand on the sunroof glass 10-15 minutes after heating starts. If the glass remains cold, and after a while the car displays error F08, it means that heating is really not happening. Visual inspection The power cord and plug are also required: traces of melting will indicate a network overload.
If you have access to a multimeter, you can try to test the circuit through the service mode, if it is provided by the model, but most often partial access to the internals is required. Pay attention to the smell: sometimes before an error appears there is a slight smell of burning or scorched wiring. This indicates that short circuit happened recently.
Before any diagnostics, be sure to disconnect the washing machine from the power supply. Working with live electrical components is dangerous and may result in electric shock.
Step-by-step instructions for checking the heating element
For accurate diagnosis, it is necessary to gain access to the heating element. Most models Hotpoint Ariston The heating element is located at the rear, but there are also frontal options. Remove the back cover by unscrewing the bolts around the perimeter and locate the heater at the bottom of the tank. It is a metal tube with protruding contacts.
First of all, inspect the heating element visually. There should be no swelling, cracks or through burns on it. If deep cracks are visible on the surface or the element is deformed, it must be replaced. Next you will need multimeter to measure resistance. Switch the device to resistance measurement mode (Ohm) and attach the probes to the terminals of the heating element.
The normal resistance of a working heating element with a power of 1900 W is approximately 25-30 Ohms. If the device shows one (infinity), it means that the spiral is broken and the heating element has burned out. If the resistance is close to zero, a short circuit has occurred. It is also important to check the breakdown on the body: attach one probe to the terminal, the other to the metal body of the heating element. The multimeter should not show any readings; if there is any resistance, the element breaks through to the housing and must be replaced.
☑️ Algorithm for checking the heating element
Checking wiring and contacts
Often the cause of error F08 lies not in the heating element itself, but in a breakdown in communication between it and the control module. Carefully inspect the wires leading to the heating element. They should not be frayed, melted or have exposed areas. Vibration during the spin cycle could simply shake the terminal off the contact, which can easily be eliminated by placing it in place.
Pay special attention to the condition contact group. If black deposits or oxides are visible on the terminals, clean them with fine sandpaper or a file until they have a metallic shine. Poor contact creates additional resistance, which leads to heating of the connection and distortion of signals to the controller. Make sure the wires are securely fastened and do not dangle.
⚠️ Attention: When inspecting the wiring, pay attention to places where the wire harnesses come into contact with the sharp edges of the metal of the housing or tank. This is where insulation chafing most often occurs, which can lead to a short circuit to the machine body.
If the wiring is intact, check the temperature sensor (thermostat), which is often built into the heating element or located nearby. Its resistance varies depending on the temperature, but at room temperature it should be in a certain range (usually a few kOhms). A faulty sensor may “tell” the module that the water is already hot, and it will not turn on the heating element, or will turn it on incorrectly, causing an error.
Control module diagnostics
If the heating element and wiring are working properly, the problem most likely lies in the electronic control module. On the board it is responsible for turning on the heater relay. Over time, the contacts inside the relay may burn out and “stick” in the closed state, or, conversely, stop closing. Visually on the board this may look like blackening in the relay area or swelling of the tracks.
To test the relay, experience and skills with a soldering iron are required. If you are not qualified as an electronics engineer, it is better to contact a service center. However, if you see obvious traces of burning or melted plastic on the board, the diagnosis is obvious: control module requires repair or replacement. Sometimes the problem is solved by resoldering the relay, but often the entire control unit needs to be replaced.
| Component | Problem Symptom | Test method | Solution |
|---|---|---|---|
| heating element | Resistance infinity or zero | Ringing with a multimeter | Replacing the heating element |
| Wiring | Breakage, oxidation, melting | Visual inspection, ringing | Stripping or replacing wires |
| Relay on board | Sticking, no click | Visual inspection of the board, test | Replacing a relay or module |
| Temperature sensor | Incorrect readings | Resistance measurement | Replacing the sensor/heating element |
If all external elements (heating elements, wires) are in good condition, there is a 90% probability that the control module is faulty, and repairs will require a qualified technician with soldering equipment.
Replacing the heating element
If diagnostics show that the heating element is faulty, it must be replaced. Buy an original spare part or a high-quality analogue suitable for your model Hotpoint Ariston. The power and length of the new heating element must match the old one. Before installation, clean the seat in the tank from any remaining scale and dirt so that the new element fits tightly and evenly.
Install the new heating element into the seat, carefully inserting it until it stops. Tighten the fastening nut, but do not overtighten it, so as not to damage the rubber seal. Connect the wires to the terminals, making sure the connections are secure. Reassemble the machine in reverse order and perform a test wash without laundry at high temperature to make sure the error disappears F08.
⚠️ Attention: The characteristics of spare parts may vary depending on the specific modification of the machine. Always check the article numbers and parameters (power, length, bending angle) with the data in the technical documentation or on the markings of the old part before purchasing.
Frequently asked questions (FAQ)
Is it possible to continue washing if error F08 is on?
Technically the machine will work, but only in cold water. However, it is not recommended to use it in this condition, since the cause of the error (for example, breakdown of the heating element on the housing) can be dangerous for the user and lead to electric shock or fire.
Why does error F08 appear not immediately, but in the middle of the wash?
This is due to the algorithm of the machine. The control module checks the heating circuit periodically. If the heating element begins to break through or the contact is broken only when the metal heats up and expands, the error is recorded precisely at the moment the failure occurs, and not at the beginning of the cycle.
How much does it cost to repair error F08?
The cost depends on the reason. Replacing a heating element is the cost of spare parts and the work of a technician. If the control module is burned out, repairs will be much more expensive. The exact price can only be found out after diagnostics at a service center.
Could error F08 occur due to a power surge?
Yes, a sharp surge in voltage in the network could damage the relay on the control board or the heating element itself. In such cases, it is often necessary to check the entire electrical circuit, and not just replace the burnt out element.