Faucet indicator flashing continuously or intermittently on the control panel of the dishwasher BoschSignals of critical failure of the leak protection system Aquastop or problems with water collection. Unlike standard errors that can disappear after a reboot, this signal often indicates a physical water hitting the device's pallet or level sensors failing. Ignoring this symptom can lead to flooding of the kitchen or complete failure of the electronics of the control module, so the reaction should be immediate and accurate.
The first action to be performed when detecting a flashing symbol of the crane is a complete disconnection of the device from the power grid and the closure of the shut-off valve on the intake hose. Further diagnosis depends on the nature of the blinking: continuous light often indicates overflow of the pallet, while intermittent blinking in combination with other indicators may indicate a breakage of the water supply valve or clogging of the filtration system. The exact determination of the cause requires disassembly of the lower part of the body and verification of the integrity of the float mechanism.
Owners of series models Maxx, Classixx or embedded lines Silence Plus It should be noted that the self-diagnosis system Bosch It detects even minimal deviations in the hydraulic circuit. If the blinking is accompanied by a pump buzzing or lack of water, the problem may lie in low pressure in the water supply or inflection of the intake hose. Below is a detailed algorithm for identifying and eliminating a fault without calling the wizard.
Decoding of signals of the crane indicator
Light indication on the dishwasher display Bosch It is the primary means of communication between the device and the user. The crane symbol can behave differently, and each state carries specific technical information. Understanding these differences allows you to reduce the time of diagnosis and avoid unnecessary disassembly of serviceable nodes.
- 🔴 Continuous burning of the indicator - most often indicates the activation of protection against leaks, the water got into the lower pallet of the case.
- 🔴 Intermittent blinking (rhythmic) – signals problems with water dialing: low pressure, closed tap or faulty intake valve.
- 🔴 Blinking paired with an error code (e.g., E15, E14) - specifies the malfunction, indicating a failure of the level sensor or Aquastop valve.
It is important to consider that on some models without a digital display, the combination of the faucet indicator blinking and the salt or rinse indicator forms a unique code. For example, the simultaneous blinking of a faucet and a star (salt) may indicate an error. E09associated with heating or flow sensor. For accurate interpretation, you need to refer to the technical documentation of a particular model. Bosch.
⚠️ Note: If the tap indicator flashes, and there is water inside the car, in no case do not try to start the drain program without making sure that there are no leaks in the pallet. This can make things worse and damage electrical components.
The diagnostic mode of some modern models allows you to display the exact code of the malfunction on the screen, even if it is not displayed in normal mode. This often requires a certain combination of buttons to be pressed when the device is turned on. However, the basic logic of the system Aquastop It remains the same for most of the brand’s devices.
Activation of the Aquastop system and water entering the pallet
The most common reason why the crane indicator lights up and flashes is the operation of the leak protection system. At the bottom of the dishwasher. Bosch There is a special pallet in which a float switch is installed. When even a small amount of water gets there, floats pop up and close the contacts, blocking the operation of the device in order to avoid flooding the room.
The water in the pallet may be due to microcracks in the pipes, weakening of the clamps, damage to the pump sealing cuffs or corrosion of the tank. Also, the cause can be a banal overflow due to clogging of the filter or malfunction of the supply valve. In this case, an emergency drain is triggered and the machine tries to pump the water out, but blocks the launch of new programs.
How to check the pallet without a complete disassembly
Tin the dishwasher turned off from the socket forward (on yourself) at an angle of 30-45 degrees. If a small amount of water (50-100 ml) leaks from under the bottom of the floor and the indicator lights up, the problem is confirmed. After that, the water should be wiped, the machine should be returned to a horizontal position and allowed to dry for 2-3 hours.
To address the problem, it is necessary to:
- Shut off the water and turn off the power supply.
- Take the car out of the niche (if it is built-in) and remove the side walls.
- Remove the bottom metal panel (pallet).
- Visually inspect the insides for traces of scale, rust or moisture.
- Check the integrity of all hoses and connections.
After the leak and drying of the pallet is eliminated, the error is usually reset automatically the next time it is turned on. If the blinking continues, it is necessary to check the float mechanism itself for sticking.
Problems with water withdrawal: valves and pressure
If there is no water in the pallet, but the tap on the control panel continues to blink, the problem lies in the water intake system. Dishwasher Bosch Expect the tank to be filled for a certain time. If the flow sensor does not record the movement of water or the level does not rise to the desired level, the system emits an error.
The first thing to check is the pressure in the water supply. Too weak a pressure will not allow the valve to open completely or fill the machine too slowly, which will be regarded by electronics as a malfunction. It is also worth inspecting the intake hose for inflections, especially if the machine is built-in and the hose can be pressed by the walls of furniture.
| Symptoms. | Probable cause | Method of decision |
|---|---|---|
| The faucet is blinking, there's no pump noise. | Intake valve malfunctioned | Replacement of the water supply valve |
| The tap blinks, the pump buzzes | Filter mesh or hose clogged | Cleaning the filter at the entrance |
| The error appears periodically. | Pressure surges in the water supply | Installation of the stabilizer or pressure check |
| The car is buzzing, but it's not dialing. | Clutching the inlet hose | Spread the hose, check the faucet. |
An intake valve is an electromagnetic device that can burn out or overgrow with scale. If the filter mesh at the entrance to the car is clogged with rust or sand, the water simply does not enter in sufficient volume. Cleaning this mesh is the simplest and often forgotten maintenance procedure.
Before cleaning the filter-grid be sure to close the water and open the faucet tap to relieve the residual pressure in the hose. Otherwise, you will find a small fountain.
Failures of level sensors and floats
Correct operation of the dishwasher Bosch It is impossible without accurate readings of water level sensors. The basic element is Aquastop (the float in the pallet) mentioned above. However, there is also a level sensor in the sink itself (often integrated into the pressostat or is a separate hydrostatic sensor). If this element fails, it can send a false signal that the machine is full or empty.
Float sticking is a frequent phenomenon. Mechanical debris, grease or scale can block the movement of the float in the upper or lower position. As a result, the machine either does not see the water and continues to collect it (the risk of overflow), or thinks that there is no water, although the tank is full (the dialing error). Checking the mobility of the mechanism is a mandatory stage of diagnosis.
The electronic part of the sensors is also subject to oxidation. Contacts suitable for the float switch may be covered with an oxide film due to high humidity. This leads to an unstable signal and chaotic flashing of indicators. Cleaning the contacts and treating them with a special spray often brings the knot back to life.
In the model system AquaSensor An optical turbidity sensor is used, which can also be a source of errors if its lens is contaminated. Although it is more likely to affect the quality of the wash, its malfunction can indirectly affect the logic of dialing and draining water.
Electronics Errors and Control Module
If the mechanical part is working, the hoses are intact, the pressure is normal, and the faucet continues to blink, the problem may lie in the "brains" of the device. Dishwasher control module Bosch It analyzes signals from all sensors. A power surge in the network, moisture on the board or factory defects can lead to incorrect data processing.
Often there is a situation when the simistor of the intake valve control on the board burns. In this case, the module “thinks” that it has given a command to open the valve, but does not receive feedback on the intake of water (or receives, but cannot control the process). This causes cyclical error and flashing of the indicator.
⚠️ Attention: Diagnostics of electronic boards requires special skills and equipment. If you do not have experience with a soldering iron and a multimeter, self-repair of the control module can lead to the final failure of the equipment.
Sometimes it helps to reset the error by prolonged shutdown (for 15-20 minutes). This allows the capacitors on the board to discharge, and the microprocessor to perform a full reboot cycle. If the error returns immediately or at the beginning of the cycle after the activation, the probability of hardware failure is high.
Step-by-step instructions for resetting an error
Before proceeding to a complex disassembly, it is worth trying to perform a software error reset. This action does not always help with physical leaks, but it effectively eliminates false system positives and software failures. The algorithm of actions may vary slightly depending on the series. BoschBut the basic principle is the same.
☑️ Checklist of primary diagnostics
Procedure for discharge:
- Press and hold the button.
Start(or a button with a picture of drops/time) for 3-5 seconds. In some models, this combinationOn/Off+ the program selection button. - Wait for the beep or flash of all the indicators.
- Turn off the car with the power button.
- Disconnect the device from the power grid for at least 10-15 minutes.
- Turn on the machine and start a short program.
If after performing these actions, the crane indicator lights up again in the process of work, it is necessary to proceed to technical diagnostics. Software reset does not eliminate physical malfunctions such as a leaky hose or a burnt valve.
Resetting an error helps only 20% of the time. If the problem is physical (leakage, valve breakage), blinking will return immediately after trying to draw water.
Frequently Asked Questions (FAQ)
What if the Bosch dishwasher flashes the tap and does not drain the water?
In this case, a double problem is likely: leakage into the pallet (Aquastop was activated) and clogged drain pump or filter. First, you need to eliminate the water in the pallet (tilting the machine), then check and clean the drain filter and corrugated drain. If the pump is humming but not pumping, it may be blocked by a foreign object.
Can I use the dishwasher if the faucet indicator flashes?
It's not recommended. Operation with an active error Aquastop can lead to serious flooding of the kitchen and damage to the flooring or furniture of neighbors from below. In addition, the operation of the pump in the presence of water in an electric pan is dangerous by short circuit.
How much does it cost to repair if the Aquastop valve burns?
The cost consists of the price of the spare part (hose with a valve or a separate valve) and the work of the master. The system hose itself Aquastop It is more expensive than usual, as it has a mechanical or electronic overlapping system. Replacement usually takes about 40-60 minutes.
Why does the error only occur in certain programs?
Different programs require different amounts of water and pressure. If the problem is borderline (for example, slightly contaminated filter or pressure in the network at the limit), then in short or economical modes the machine can work, and in intensive, requiring a quick dial of a large volume of water, will give a crane error.
How often should the filter mesh be cleaned at the water inlet?
It is recommended to carry out preventive cleaning of the inlet filter mesh at least once every 6-12 months, depending on the hardness of the water and the condition of the pipes. This will prevent 80% of the problems associated with long water intake and the subsequent flashing of the indicator.