Suddenly a light-up tap indicator on the dishwasher control panel Bosch It is a signal that cannot be ignored. This symbol, often referred to as a “slip” or “drop”, tells the user of a critical problem with the supply or withdrawal of water, or of the activation of the leak protection system. AquaStop. Unlike simple errors that disappear after a reboot, this indicator can indicate a serious breakdown that requires intervention.
Ignoring this warning can lead to flooding of the kitchen or failure of expensive electronic components of the machine. Modern models Boschincluding series SPV, SMS and SKEThey are equipped with sensitive sensors that respond to even the minimum amount of moisture in the pallet. Therefore, if the faucet caught fire, it is necessary to immediately stop the operation of the device and conduct a primary diagnosis of the condition of the hoses and filters.
In this article, we will discuss in detail all possible causes of the error, from banal blockage to valve failure. You will learn to read error codes correctly and perform a safe system reset. If the tap indicator is constantly on fire with a flashing sound signal, this is a direct indication of the operation of the AquaStop system, which requires immediate closure of the water tap. Let’s figure out how to act in each specific situation.
Decoding of the indication and error codes
The first step in diagnosis is to understand what the device is telling you. On dishwashers displays Bosch The indication can be different: sometimes it is just a burning symbol of the crane, sometimes it flashes, and in models with a digital display (series). Maxx, Silence Plus) the error may be displayed as a code, for example, E09 or E15. Understanding the difference between these signals saves time on troubleshooting.
If the indicator is constantly burning, this most often indicates a problem with the water set or its drain. The machine tries to draw water, the timer expires, but the desired level is not reached. In this case, electronic blocks further operation of the program to avoid the pump running in dry mode. This is a protective mechanism that prevents overheating and breakage of the pump.
The situation changes dramatically if the salt or rinse indicator lights up with the tap, or if the symbol begins to flash at a certain rhythm. In such cases, the problem may lie in the turbidity sensors or the level of water hardness. However, the classic “burning crane” in 90% of cases is associated with the hydraulic part: hoses, filters, valves and float systems.
- 💧 Continuous burning: Problem with water pressure, inlet filter clog or intake valve malfunction.
- ⚡ Blink: Often indicates intermittent contact, electronics problems, or specific water level sensor errors.
- 🔊 Sound signal + faucet: A critical error, often associated with a leak protection system (AquaStop) or a complete absence of drainage.
It is important to note that in some models with a function Home Connect The error code can be duplicated on the smartphone screen. This is a convenient way to get accurate information about the nature of the malfunction, without guessing by the blinking of light bulbs. Always check the app if your machine supports remote control.
AquaStop: Why the Security Worked
One of the most common causes of burning the crane indicator is activation of the system. AquaStop. This is a set of safety measures developed by engineers. Bosch to prevent flooding of the apartment. The system consists of a double hose, an electromagnetic valve at the entrance and a special pallet (trench) at the bottom of the machine, where the float is installed.
The principle of operation is simple: if water appears in the pallet (even a little), the float rises and mechanically or electrically activates the discharge valve. At this point, the water supply is blocked, and the same indicator of the tap, signaling an emergency, lights up. This can happen due to a microcrack in the hose, a leak of the pump or even because of condensation that has got on the contacts.
⚠️ Attention: If AquaStop is working, do not try to simply reset the error and start the machine again. Re-inclusion without eliminating the cause of the leak can lead to serious flooding of the room and damage to the flooring.
Users often confuse the AquaStop operation with a regular blockage. The key difference is that when the protection is activated, the machine can emit a characteristic flick of the valve, and in some models, water can continue to drip into the drainage even when it is turned off until the faucet on the wall is blocked. Visual inspection of the bottom pallet through the viewing window (if any) or removal of the side wall will help confirm the presence of water.
To check, you need to disconnect the car from the network, block the water and gently tilt the car forward (covering the rag). If water spills from under the bottom and the machine then tries to turn on (the indicator of the crane will go out), then the problem was in the liquid that got into the pallet. However, this is a temporary solution - the cause of water entering the enclosure must be sought and eliminated.
What's inside the AquaStop hose?
Inside the protective hose is a thin tube for water supply and a special cable or second circuit. When the inner tube is broken, water enters the external hose, the pressure in which the valve piston raises, blocking the supply. It is mechanical protection that does not require electricity.
Problems with water supply and intake filters
If the leak protection system is not activated, and the tap is still burning, it is worth checking the path of water from the water pipe to the machine. The most common, but common reason is the lack of pressure in the system or a closed valve. Sometimes residents forget to open the faucet after preventive work or washing the floor. It is also worth checking whether they are not covered. flood-hose behind the back of the car.
The second important element is the mesh filter at the entrance to the car. It is located at the place of connection of the hose to the dishwasher body. Its task is to retain rust, sand and scale from pipes. Over time, this filter clogs, the flow of water weakens, and the machine simply does not have time to gain the desired volume for the time allotted by the program. As a result, a mistake lights up.
No special tools are needed to clean the filter. It is enough to block the water, unscrew the hose and carefully remove the net with pliers or fingers. Wash it under a strong stream of water using an old toothbrush to remove plaque. If the plaque is lime, you can soak the filter in a solution of citric acid for 15-20 minutes.
☑️ Cleaning the inlet filter
Do not forget about the condition of the hose itself. If it is old, the rubber walls can flatten inside, blocking the water current. Also check if there is a sleeve inside the sleeve. biofilm Or the slime that narrows the opening. In such cases, it is better to replace the hose with a new one, since its inner surface will no longer be perfectly smooth.
| Symptoms. | Probable cause | Method of decision |
|---|---|---|
| The faucet is on fire, there's no water. | Valve closed or no pressure | Check the cranes and pressure in the system |
| Crane's on fire, car buzzing | Clogged inlet filter | Wash the net at the entrance to the car |
| The faucet blinks | Intermittent valve contact | Check the wiring and intake valve |
| Error after lights out | Failure of the program or sensors | Complete reset (Hard Reset) |
After cleaning the filters and checking the hoses, run a short program. If the water is drawn with good pressure and the error disappears, then the problem is solved. If the water flows barely even with the hose removed, the problem may be in the plumbing of the apartment or in the malfunction of the very same. elevation-valve.
Diagnostics of drainage system and drainage pump
Sometimes the faucet lights up not because the water doesn’t come, but because it doesn’t go away. If the tank remains water from the previous sink, the level sensor records its presence and blocks the launch of a new program, signaling a crane error. It's the logic of the job. BoschThe machine will not start to draw fresh water until it has freed the tank from the old one.
The first thing to do is to check. drain-filter at the bottom of the washing chamber. Food residues, pits, glass and fat can completely block the drainage pump. Unscrew the filter cover, remove the mesh and thoroughly rinse all the elements. Pay attention to the impeller of the pump, which is visible in the depth of the hole: it should rotate freely.
If the filter is clean but the water is worth it, it is possible that the drain hose or siphon under the sink is clogged. Disconnect the hose from the sewer and blow it. Often, a fat plug is formed at the connection point to the siphon, which is easy to remove with a brush. Also check if the hose is bent and if its end is raised too high (the optimal height of the loop is 60-80 cm).
To prevent blockages of the drain hose, run the program every six months with the addition of a special tool for cleaning dishwashers or an empty wash at 70 ° C.
The most unpleasant option is the failure of the drainage pump (pump). If you don’t hear a characteristic buzzing when you turn on the drain, or only a quiet hum without vibration is heard, the engine winding may have burned or the shaft has jammed. In this case, it will be necessary pump-up. Pump models for Bosch There are different types of pumps (Askoll, Midea, Drain), so when buying a new part, focus on the code specified on the body of the old pump.
⚠️ Attention: Before checking the pump, be sure to disconnect the dishwasher from the power grid. Water and electricity are a dangerous combination. All manipulations with wires and terminals are carried out only on dry and de-energized equipment.
Failure of sensors and electronic module
If the mechanical part (hoses, filters, pumps) is working, the problem may lie in the electronics. The main “diagnostic” of the water level in the dishwasher is pressostat (level sensor). It measures the air pressure in the tube connected to the tank and tells the module how much water is in the machine. If the tube is filled with dirt or condensate, the readings will be incorrect, and the machine will “think” that there is no water or, conversely, too much.
To check the pressostat, you need to remove the upper cover of the machine (usually it is held on two screws at the back) and find a round part with a thin tube suitable for it. Pick up the phone and blow it. Check the sensor itself for oxides on the contacts. Sometimes it helps simple cleaning of contacts with alcohol, but more often it is necessary to replace the element.
Another suspect. flow-heater. In some models Bosch The water flow sensor is built into the heating system. If the water does not move through the heater (due to an air traffic jam or malfunction), the machine may produce a tap error. It is also worth inspecting the wiring: in conditions of vibration and humidity, the contacts can go away or oxidize.
A common hidden cause of error is a microcrack in the corrugated drain pump or pressostat connector, through which water drips onto the control board, causing chaotic electronics behavior.
The most expensive option is to break the control module. If the simistors controlling the valve are burned or the tracks on the board are damaged due to moisture, the machine will not be able to open the water supply valve. Diagnostics of the module requires special knowledge and equipment, so in this case it is better to contact the service center.
How to Reset Error and Reset
After troubleshooting the fault (cleaning filters, replacing the hose or drying the pallet), you need to reset the error. In dishwashers. Bosch There is no single universal “Reset” button, the combination depends on the model. However, there is a common algorithm of actions that helps in most cases.
First, complete a full shutdown cycle: press the on button for 3-5 seconds until the machine is completely turned off. Then pull the plug out of the socket or turn off the machine in the shield. Leave the car de-energized for at least 15-20 minutes. This is necessary in order to discharge the capacitors on the board and reset temporary errors in the memory of the controller.
For some models with display or indicator Start The combination works: press the program button (usually) VarioSpeed or Intensive) and the switch on simultaneously for 3 seconds. On models with a beam on the floor (InfoLight) it may be necessary to press the program select button and the enable button. After turning on, the machine must begin to collect water.
What to do if the reset does not help?
If after a complete reset and elimination of visible causes (blockages, leaks) the crane indicator lights up again at start-up, the problem is hardware in nature. Probably the intake valve, pressostat or the control module itself is defective. Professional multimeter diagnostics are required.
Can I use a car with a burning crane?
It's not recommended. If the error is due to overflow (AquaStop), further operation will lead to flooding. If the problem is the drain, you will fill the kitchen with dirty water. If in the set - burn TENG or pump. Use the machine only after the error has been corrected.
Why did the error occur after the stress surge?
Voltage surges often “foil” the logic of the electronic module. In this case, a long reset helps (disconnection from the network for 1-2 hours). If it didn't help, it's possible the jump damaged the board elements and electronics repairs would be needed.
Regular maintenance of your dishwasher Bosch The best prevention of the occurrence of the “burning crane” error. Wash filters once a week, check the hoses every six months and use quality products for washing dishes. This will prolong the life of the appliance and save you from unexpected breakdowns.