Bosch dishwasher does not fill with water

It can be annoying and inconvenient if the water in your Bosch dishwasher isn’t filling. This frequent problem can keep your dishes from cleaning, leaving you perplexed as to what went wrong.

This issue may be caused by a number of things, from a straightforward clogged filter to a more complicated problem with the water inlet valve. Gaining insight into these possible reasons will enable you to diagnose the issue and restore your dishwasher’s functionality.

This post will go over some of the most typical causes of your Bosch dishwasher not filling with water as well as walk you through the necessary repairs.

A few common problems, like a kinked water supply hose, a faulty float switch, or a blocked water inlet valve, could be the cause of your Bosch dishwasher’s inability to fill with water. Finding the issue and resolving it quickly will help you restore your dishwasher’s functionality and prevent more issues.

Let"s make a list of possible malfunctions

There could be a few reasons why the Bosch dishwasher hums but doesn’t fill with water. Always start the check with the most fundamental and frequent causes before logically progressing to the rarest and more intricate ones.

• Make sure that the water supply in your house has not been turned off.
• Check the water inlet valve to see if it is blocked.
• Check that the door of the washing chamber is securely closed. It must be sealed with an electronic lock, otherwise the water intake will not start and the wash will simply not begin.
• If the problem is really in the door, which cannot be closed, then this may be due to damage to the lock, or due to foreign objects getting inside.
• Inspect the inlet hose to ensure that it is intact, not pinched anywhere, and that there is no blockage in it.

You will need to do a more involved check if none of the five reasons listed above are found. You must study the PMM units in order to do this.

• The problem may be in the inlet valve, which opens and closes the membrane upon a signal from the control module. If the valve is faulty, the membrane will remain closed, and water will not enter the dishwasher.
• Damage to the pressure switch will also prevent the "home assistant" from functioning normally. This water level sensor measures the amount of water in the tank and transmits data to the control board. Accordingly, if there is no data, there will be no signal to supply water to the tank.
• The electronic module itself, the “brain” of the dishwasher, responsible for transmitting commands to all elements of the device, could have failed.
• The malfunction could also have occurred due to the fact that the Aquastop protective system was triggered.

Let’s move on to a detailed examination of each of the numerous likely causes of the malfunction.

Impurities in the water clogged the tract

A clogged machine mesh filter is one of the most common causes of the absence of water intake. This occurs as a result of the various pollutants and impurities in tap water clogging the flow hose. Once a blockage occurs, the Bosch dishwasher either stops working completely or operates very slowly because of the reduced water intake. What should I do in this circumstance?

• Turn off the water supply and unscrew the flow hose.
• Clean the mesh filter installed at the junction of the dishwasher and the hose.

The filter typically has the appearance of a tiny plastic or fragile metal mesh.

• If the contamination is not severe, you can clean the element with a needle or toothpick, or by placing the part under a powerful stream of hot water from the tap.

Even with the most severe contamination, soaking the element in a citric acid solution for a few hours will help clean it if you are unable to do it manually.

Does the dishwasher close normally?

If the apparatus produces a loud humming sound but does not fill with water, it might be because the door is partially open. In this case, you should carefully examine if there is something obstructing the door or if it is simply not closed out of carelessness.

• Assess the integrity of the rubber seal – is it torn off, are there any cracks on it, does it prevent the door from fitting tightly.
• Make sure that the door latch is not damaged. For the working cycle to begin, the door must be closed strictly until it clicks.
• Check that no foreign objects have gotten into the gap between the chamber and the door.
• Use a building level to assess the correct installation of the "home assistant" – it must stand as level as possible.
• Examine the lock mechanism to see if it has failed.

You will need to replace the lock if it is the cause of the issue; there is no sense in trying to fix it. To handle things on your own without contacting a service center technician, follow our instructions.

• Open the dishwasher door.
• Unscrew the bolts that are installed on the inside of the washing chamber to remove the outer door panel.
• Disconnect all wiring.

To have a picture handy for reassembly, make sure to snap a picture of the wires connected correctly.

• Remove the lock, having previously removed the fasteners.
• Install a similar new part in its place.

The same instructions are followed to complete the repair, but in the opposite order.

The valve does not open

If previous tests turned up nothing, there’s a good chance that the water fence’s valve—which frequently results in low liquid set—is the exact cause. After closely examining the element for damage and making sure everything is in working order, the electronic component needs to be examined. Simply use an ordinary multimeter in voltage measurement mode to accomplish this; if the membrane does not open, the unit is damaged.

Afterwards, you can use the same tester to conduct the resistance test. It can only be replaced with a new element if it is absent; the operability of the element cannot be restored. How can I carry out this task at home?

• Disconnect the wires from the valve.
• Unscrew the fasteners on which the part is attached.
• Install the new element in its seat.
• Connect all the wires using the photos taken earlier.

When buying replacement parts for your "home assistant," try to stick to original components to avoid interfering with the machine’s functionality.

The inlet hose is pinched

A pinched filling hose is another well-known issue. This may occur unintentionally, as when rearranging the appliances, and one of the dishwasher’s legs may squeeze the hose as a result. If this causes the inlet hose to burst and floods the floors with water, the issue can be found right away. The housewife won’t notice the difference in the water intake until the working cycle has passed if the hose can tolerate this kind of strain.

Occasionally, when kitchen furniture or other appliances squeeze the hose, a similar issue may arise. For this reason, you must install household appliances correctly and use extreme caution when it comes to the inlet hose.

The leak protection sensor has shown itself

If your Bosch dishwasher has an Aquastop protection mechanism, then this point should only be checked. It might have started when it sensed a leak, which made the float rise and set off the switch, blocking the liquid intake. Your appliance will alert the user with the E15 error code if it has experienced such a problem. Here’s how this can be resolved:

• When the protection system is mechanical, you need to turn off the dishwasher, shut off the water supply and remove the hose;
• Then you should inspect the inlet valve to make sure that it is not pressed against the walls of the hose;
• If this is the case, you need to replace the hose.

If the "home assistant" has an electronic leak protection system installed, you will need to attach a wire to the sensor and follow the instructions once more in order to get the mechanical Aquastop working again.

The pressure switch does not work correctly

The liquid will also not enter the dishwasher tank if the water level sensor is malfunctioning. In the event that the pressure switch malfunctions, the same outcome will occur. The unit can only be replaced, just like many other parts, so you shouldn’t attempt to fix it yourself.

The sensor is typically found inside a plastic box that is fastened to the circulation pump’s body. To make sure everything is in working order, blow hard into the pressure tube and listen for any distinctive clicks. The component needs to be changed if there are no noises.

Only a service center specialist who understands how to correctly check the pressure switch settings can perform a more trustworthy check. This is particularly important if repairmen have previously worked on the water level sensor and could interfere with the device’s functionality.

Is the tee tap intact

Bosch home appliances are typically accompanied by a tee tap installed in front of them, which serves to turn off the liquid supply without interfering with the water supply to the sink to which the machine is connected. Because you can easily open and close the machine’s liquid supply without touching other taps, this is a very laconic solution. The tee frequently breaks, which is the issue.

Just turning the tap handle the wrong way when shutting off the water intake can cause damage to the component. In this instance, it will be challenging to determine the extent of the damage because the tap will stay closed even though the handle will keep turning. In this case, it will appear as though the issue is elsewhere, not in the tee, whose handle is still turning correctly. Since this frequently occurs, you shouldn’t rule out this choice.

This is the final analysis:

It can be annoying to deal with a Bosch dishwasher that won’t fill with water, but you can usually solve the issue on your own. You can usually find and fix the problem by looking at the inlet valve, the water supply, and making sure there are no obstructions.

It might be time to bring in an expert if these actions are ineffective in solving the issue. To guarantee that your dishwasher operates properly once more, more complex problems like electrical or internal mechanical ones may need to be attended to by professionals.

Your Bosch dishwasher can function more smoothly with regular maintenance and quick attention to problems, sparing you from more serious headaches later on.

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