Sudden stop of dishwasher Ariston mid-cycle and flashing indicators are a situation familiar to many owners of this technique. Electronic control modules of modern models, such as: Ariston LFF 8M132 or Ariston LSF 823They are equipped with a self-diagnostic system that instantly responds to any deviations in the operation of the nodes. Instead of panicking or calling the wizard at the first signal, you should try to understand the display readings yourself.
The system of coding malfunctions of this Italian brand is developed quite logically, although it requires a careful approach to decryption. Most often, a combination of flashing or alphanumeric symbols on the screen indicate a specific node that requires verification: from a simple filter clogging to failure. circulation pump. Understanding these signals saves time and budget by performing basic prevention or minor repairs.
In this article, we will discuss in detail the main error codes found in dishwashers. AristonWe explain the reasons for their occurrence and offer step-by-step algorithms of actions. You will learn how to distinguish a software failure from a real failure and when intervention in the design of the device is really necessary.
Principles of the self-diagnostics system
Modern dishwashers Ariston They are equipped with intelligent sensors that continuously monitor water parameters, system pressure and heating temperature. If the sensor readings go beyond the permissible norms, the controller blocks the execution of the program and displays the corresponding code. This prevents more serious breakdowns, such as water-flow Or overheating the TEN.
Depending on the model, the indication may look different. In devices with a digital display (for example, a series of Ariston Hotpoint) the error is displayed as a code beginning with the letter "F" or "A" followed by the numbers. In simpler models, where the screen is absent, light indication is used: a certain combination of light bulbs, corresponding to the phases of the wash (soaking, washing, rinsing, drying), flashes.
⚠️ Warning: Before starting any diagnostic work, be sure to disconnect the device from the power grid. Working with electrical appliances under tension is life-threatening.
It is important to understand that some codes may indicate a temporary failure caused by a power surge or low water pipe pressure. In such cases, it often helps simple drop-off. However, ignoring repeated signals can lead to costly repairs.
Hidden Testing Functions
Some service modes allow you to start compulsory diagnostics of all nodes. This usually requires a specific combination of buttons to be pinched when turned on, but it is only recommended for experienced users who know the exact sequence for a particular model.
Errors of water supply and drainage (F4, F5, F9)
The most common group of malfunctions is associated with water supply and sanitation. Code. F4 (or flashing indicators 1 and 4) indicates that the machine cannot draw water in the allotted time. The cause may be an overlaid crane, weak pressure in the main line or clogging of the inlet filter-mesh.
Mistake. F5 indicates a leak problem. If the water does not go away, the system records it as an emergency. Often the fault is a clogged filter at the bottom of the sink, a squeezed drain hose or a clogged sewer. Less often, the problem lies in the malfunction. drain-pump (pumps)
- 🚿 Check if the water supply tap is open and if the pressure in the system is sufficient.
- 🧼 Clean the rough cleaning filter at the hose inlet and the bottom filter inside the chamber.
- 🔌 Make sure that the drain hose is not bent and raised to the correct height (siphon).
- 🔍 Examine the impeller pump for the presence of foreign objects (bones, glass, toothpicks).
Code. F9 It is less common and indicates a lack of water circulation inside the chamber, which may also be due to pump problems or sprinkler blockage. If the peg is jammed due to a fallen spoon, the flow sensor will record the lack of water movement.
☑️ Diagnosing plum problems
Faults of the heating system (F3, F6, F7)
Temperature is a critical parameter for high-quality dishwashing. Code. F3 This means that the water is not heating or is warming too slowly. This could be caused by a breakdown. TEN. (heating element), a malfunction of the thermostat or relay on the control board. It is also worth checking the integrity of the wiring going to the heater.
Mistakes. F6 and F7 Often associated with water overheating or a temperature sensor (NTC) malfunction. If the sensor “sees” a temperature above 75-80°C, when the heating should not have been completed, it emergency stops the cycle. In some cases, this indicates a short circuit in the sensor circuit.
Diagnosing heating elements often requires the use of a multimeter to check resistance. The normal resistance of a working TEN is usually 20-30 ohms. If the device shows a break (infinity) or a short circuit (zero), the part must be replaced.
When replacing the TEN, be sure to check the condition of the sealing rubber gasket. Old, suffocated rubber can leak even with the correct installation of a new heater.
It is important to note that in models with a flow heater (for example, some versions of the Ariston LFTA) the diagnosis may be different from the storage tank machines. In flow systems, water is heated instantly, and errors can occur due to the scale on the walls of the heating chamber.
Electronics and sensor problems (F8, F10-F15)
A series of errors from F10 to F15 typically indicates complex technical faults associated with a control board, engine or drying system. Code. F8 Often indicates problems with the engine of the circulating pump - it can be blocked or have a winding break.
Mistakes. F10-F12 These are usually associated with a drying system or additional features (e.g. AutoDry). If the drying fan does not work or the duct is clogged, the machine will report this with the appropriate code. In newer models with inverter motors, these codes may indicate communication failures between the main module and the engine module.
| Error code | Probable cause | User actions |
|---|---|---|
| F4 | No water intake. | Check the faucet, filter, pressure. |
| F5 | No water drain. | Clean the filter, hose, pump |
| F6 | Water overheating | Check the temperature sensor |
| F9 | No circulation. | Check the skewer, pump. |
Special attention should be paid to the code. F13-F15, which often indicates a communication failure between the boards or a malfunction of the electronic module itself. In such cases, self-repair is difficult and requires professional firmware or replacement of the control unit.
Specificity of models with and without display
Model owners Ariston LCD-displayed (series) Hotpoint-Ariston) luckier: they see the exact error code, which makes it much easier to find a solution. However, in budget models without a screen, the manufacturer has used a light display system, which must be correctly read.
In machines without a display, errors are encoded by flashing wash phase indicators. For example, if the soaking and laundry indicators flash simultaneously, this corresponds to the F1 code (often meaning no salt or problems with regeneration). If the flashing "Wrinse" and "Dry" - it can be code F5 (problem with the drain).
For accurate decoding of light signals, you need to refer to the instructions of your model, since the combinations may vary depending on the year of release and series. Sometimes the method of exclusion helps: alternately checking the nodes corresponding to flashing indicators, you can localize the problem.
⚠️ Note: Do not attempt to disassemble the electronic control unit without the appropriate knowledge. Static electricity or sloppy handling can permanently put the board out of action.
Users often confuse the salt-free indicator (a flashing light bulb with an "S" symbol or droplet) with an error. This is not a breakdown, but a reminder to put regenerating salt in a water softening tank.
Error reset and reboot algorithm
Before you start disassembling the equipment, try to perform a software reset. Electronics Ariston It is sensitive to voltage surges, and sometimes the system simply “hangs” in a state of error, although the physical malfunction has already been fixed or was temporary.
The standard reset procedure is as follows: press the Power button or button combination (often a “Delay Start” or a special reset button marked with the letter “P” or drop icon) for 3-5 seconds. The display may have the words "End" or "0" on it, after which the machine must go to standby mode.
If after reset the error appears again when you start any program, then the fault is hardware in nature and requires physical intervention.
Also an effective method is the complete de-energization of the device. Pull the plug out of the socket for 15-20 minutes. This will allow the capacitors on the board to discharge, and the controller will be rebooted from a clean slate. After turning on, run a short program without dishes for verification.
When a Master's Challenge is Necessary
Despite the desire to save money, there are situations when self-repair is impractical or dangerous. If the diagnosis indicates a malfunction of the electronic module, replacement of engine bearings or complex repair of the AquaStop system, it is better to contact the service center.
In addition, if the machine is under warranty, any opening of seals or self-replacement of parts will lead to the loss of warranty obligations. In such cases, even simple filter cleaning should be done carefully so as not to damage the internal mechanisms.
A professional master has the necessary equipment for accurate diagnosis: pressure testers, pressure gauges and programmers for boards. This allows you to quickly find the root of the problem, which is not always obvious when externally inspected.
What if the machine makes a mistake but the water is inside?
If an error (e.g. F5) occurs and there is water in the chamber, do not try to open the door by force - you will flood the floor. First, try running the Drain program. If it does not work, gently collect water from the chamber with a glass or use a syringe, tilting the machine beforehand (exercise caution). Only after the removal of water can be diagnosed.
Why does the error appear only a short time after launch?
This is typical of heating errors (F3, F6) or circulation errors (F9). The machine starts a cycle, starts heating the water or pumping it, and after 5-10 minutes, the sensors detect that the temperature does not rise or the pressure has dropped. This indicates that the unit is working, but inefficient (scale, partial blockage, worn-out TENG).
Can I use a dishwasher with a burning error?
It's not recommended. Operation of a faulty device can lead to leakage, short circuit or damage to the dishes. If the indicator "Salt" or "Wash" is on, you can use it. If the error code (F...) is on or phase indicators flash, operation should be stopped until the cause is eliminated.