It can be confusing when a Bosch dishwasher refuses to start or stops in the middle of a cycle. The Aquastop system being activated is one frequent cause. This safety measure guards against water leaks, which could otherwise flood your kitchen. However, what does it really mean when Aquastop is activated?
To put it simply, Aquastop activates when the dishwasher notices a leak or a problem with the flow of water. Even though it’s a useful feature, people who aren’t familiar with dishwasher mechanics may find it difficult to understand why it occurs and what to do next.
This tutorial will explain the operation of the Aquastop feature, the typical reasons it activates, and the actions you can take to fix the issue so your dishwasher functions properly again.
- What to do without delay?
- Why water ended up in the machine tray?
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What to do without delay?
By reading the user manual, you can learn how your Bosch dishwasher notifies you when the Aquastop system is activated. Typically, the machine shows the associated error code on the screen. Additionally, the dishwasher’s inlet hose’s indicator changes color to red.
There are various kinds of sensors for the Aquastop system. Mechanical is the first kind. When they are triggered, they can be used again. You just need to move the valve membrane inward and loosen the spring to accomplish this.
Certain Aquastop hoses are disposable, meaning that once they are triggered, they cannot be used again.
If the sensor is disposable, the moment the indicator turns red, it is no longer functional. The inlet hose is replaced along with the element. The specific type of equipment installed on your Bosch dishwasher is explained in detail in the equipment’s instructions.
It’s very easy to replace the Aquastop hose on a Bosch dishwasher. You’ll require:
- turn off the water supply to the dishwasher;
- unscrew the old hose;
- connect the new pipe in the same way.
Dishwashers with an electromagnetic Aquastop system are available. In this instance, you will also require attaching a wire to the leak detection sensor’s electrical connector. The protective element’s groove, where the cable exits, is situated close to the machine’s inlet valve.
What should be done if the dishwasher tray detects water and Aquastop is activated? How can the "home assistant" be unblocked? After identifying a leak, PMM Bosch shows the error code E15 on the screen. The "intelligence" instantly triggers the safety mechanism when the float beneath it rises.
Upon activation of the Aquastop system, the dishwasher drain pump initiates automatically.
In order to keep the room from flooding, the pump begins to pump water from the machine into the sewer. Additionally, the "Tap" indicator on Bosch dishwashers always blinks when the E15 error is displayed. It notifies that the system’s liquid supply has been cut off by the machine.
Why water ended up in the machine tray?
What should you do if a leak is discovered by the dishwasher? First, watch until the machine’s water is drained into the sewer by the pump. Secondly, turn off the equipment, shut off the shut-off valve, and investigate the source of the issue. We will advise you in which situations the issue can be resolved on your own, at home.
- Leak from the outside. Check if the plumbing or pipes near the dishwasher are leaking. Probably, someone in the household recently spilled water on the floor or on the countertop under which the dishwasher is located. All this could lead to water getting into the machine tray and triggering the Aquastop system. Eliminate the cause, drain the water from the tray, and the E15 error will disappear.
- Clogged filter elements. This leads not only to difficult drainage, but also to disruption of water circulation in the dishwasher and its overflow. As a result, water overflows into the tray, the float floats up and the Aquastop sensor is triggered. The solution to the problem is to clean the filters. The manufacturer Bosch generally recommends doing this after each use of the dishwasher, and also do not forget to clean the dishes from food residues so that they do not clog the grids.
- Using household chemicals for hand washing. Sometimes users, out of ignorance, pour ordinary dishwashing gel into the dishwasher, like Fairy. The product foams very strongly, and this is unacceptable for the equipment. As a result, the foam gets into the tray, and the machine displays the error E15 on the display. In such a situation, you must immediately turn off the device, unload it and leave it to dry for 2-3 days. Excessive foaming is fraught with not only the triggering ofAquastop, but also damage to all the electronics of the dishwasher.
- Exceeding the dosage of powder for the dishwasher or using low-quality special detergents. Even if you use household chemicals designed specifically for dishwashers, this does not exclude the possibility of error E15. If you pour in too many granules, this can also lead to excessive foaming. All this will end up in the tray, and Aquastop will work. The problem is “treated” in the same way.
- Adding water from the sewer pipe. A fairly rare malfunction. It can only occur with Bosch dishwashers, the drain hose of which is connected to the sink siphon. If the sewer is clogged, waste can get into the dishwasher. The machine reacts to this with the already familiar error E15. To fix the problem, find and remove the “garbage plug”, restoring normal drainage.
You must raise the dishwasher’s drain hose to the level of the sink (create a loop) in order to prevent refilling the appliance. Installing a check valve in the device to stop liquid from entering the sewer is also advised. An alternative would be to bypass the siphon and connect the dishwasher straight to the pipe.
Once you have determined the cause of the E15 code on the screen, you must empty the tray of liquid. This can be accomplished by taking out the case’s side wall or tilting the machine back. Another option is to just leave the dishwasher off for two to three days, allowing the water to dry naturally.
| Problem | Possible Cause |
| Water leakage detected | Damaged hose, faulty seal, or loose connection |
| Aquastop valve activated | Blocked filter or excessive water pressure |
| Dishwasher stopped mid-cycle | Aquastop system engaged due to water inside the base |
| Water remains in the base | Drain issues or clogged pump |
Your Bosch dishwasher’s Aquastop system is a direct indication that a leak has been found and that the appliance is attempting to stop any further water damage. Although this safety feature works well, it can be annoying if it starts working without any apparent reason. Frequently, the system can be set off by tiny leaks, too much detergent, or problems with the water inlet hose.
Make sure the dishwasher is disconnected from the power source before starting any repairs. First, make sure the hoses and seals are in good condition and look for any obvious leaks. Resetting the Aquastop system or carefully moving the dishwasher can sometimes fix the problem.
It may be necessary to get in touch with an expert if the issue continues or if you are unable to identify its root cause. Although the Aquastop system is a useful safety measure, it must be used correctly to prevent more serious problems, just like any other safety feature. You can maintain the smooth operation of your Bosch dishwasher by performing routine maintenance and keeping an eye out for early warning signs.
When a Bosch dishwasher’s Aquastop system activates, it typically indicates that the appliance has identified a possible water leak and has turned off the water supply to avoid flooding. The appliance and your house are both intended to be protected by this safety feature. A malfunctioning hose, clogged drainage, or too much water inside the machine are typical causes of this. Finding the precise cause of the problem and fixing it quickly are essential to getting your dishwasher operating normally again. If the problem is more serious, you may need to seek professional assistance or perform simple fixes.
