Why water does not flow in the Bosch dishwasher, reasons and repairs

Your day is bad if the water isn't flowing through your Bosch dishwasher. A breakdown will completely spoil the atmosphere. It's hard to imagine modern life without this kitchen gadget. I want to eliminate the malfunction immediately. You can solve some problems yourself.

What to check first

The reasons why water does not flow into the machine are the same for dishwashers from Beko, Bosch, Ariston and others. The most modern models of dishwashers are equipped with the Aquastop system, sometimes it is this that fails, but there are other problem areas.

Tap water

The first step is to go to the sink if the dishwasher hums when turned on, but does not fill water. Open the faucet. Hissing, lack of water explain the cause of the malfunction. The device works properly, problems with the water supply.

The door is not closed properly

This is the most common reason. Many housewives are in a hurry, do not completely close the door. In this case, the blocking is triggered. The lights on the control panel are on, but the machine is silent. No water is collected, the pump is silent. The problem can be easily solved. The door opens and closes until it clicks.

Water supply valve

Leaving the house (apartment) for a long time, the owners close the valve that connects the hose from the dishwasher to the water supply system. On their return, they forget to open it, including the device, and feel the fear.

If no water enters the machine, check the valve first.

Pipe

With tap water, scale and other debris can enter the device. It can damage the machine. To prevent this from happening, a mesh filter is installed where the pipe is connected to the water supply network.When the filter mesh clogs, the water does not enter the tank well, the dishwasher hums, but does not work.

Look at Also

How to paint lacquered furniture at home without removing the varnish

This malfunction can be easily eliminated:

• unscrew the pipe;
• take out the colander;
• remove large particles from it;
• the holes are cleaned with a needle;
• the plate is cleaned with a solution of citric acid, the sieve filter is lowered into it for 1-1.5 hours.

What breakdowns can lead to lack of water collection

The owner of the dishwasher can repair some breakdowns on his own, others, more complex, can be carried out by a specialist from the service center.

Door lock failure

The machine door closes without clicking, the washing mode does not work. The reason for this is the locking system installed in the latch.The malfunction occurs when the device is misused:

• the door opens with an effort;
• the container is incorrectly installed;
• violated the integrity of the seal.

The latches are not repaired, they are changed. Buy a part for a specific dishwasher model. There are no universal clips. You can replace the lock yourself.

The valve is faulty

There are several types of valves in the dishwasher. If any of them fail, the device stops working. The solenoid valve cuts off the water supply according to the selected program and when it is disconnected from the mains.

The water filling valve regulates its volume, dampens pressure drops in the water supply system.

It opens when the engine is started. A non-return valve is provided to evacuate the dirty liquid. It opens on one side. It is a small plastic part, it is mounted on a pipe.

Signs of faulty valves:

• water supply problems;
• puddle on the floor when the machine is switched off.

There is a malfunction in the sensor

Symptoms of a faulty pressure switch occur with mechanical wear of the membrane, oxidation of the contacts, puncture, disconnection, blockage of the tube. The following symptoms indicate that the water supply sensor is faulty:

• the tank is not filled with water, but the washing mode starts;
• the pump works badly, the water either does not drain according to the program chosen, or, on the contrary, is constantly drained.

Control module

It is the brain of the dishwasher. It controls all processes, starts the program of washing (main, preliminary), rinsing, drying. To know that the problem is in the control module, if the water does not enter the machine, you can simply:

• pour 4 liters of water into the tank;
• put some plates;
• start the wash cycle.

If the machine does not work, it is not the water supply system that is faulty, the automation is faulty.

The "Aquastop" system is faulty

Most models are equipped with a leak protection system. It is installed at the bottom of the dishwasher. "Aquastop" consists of a polystyrene float and a sensor. When water appears in the tank, the float rises and exerts mechanical pressure on the sensor. It sends a signal to the control unit, which determines an emergency situation:

• closes the inlet valve;
• starts the pump, which pumps water from the tank;
• the error code lights up on the display.

Look at Also

How to properly glue a plinth to a stretch ceiling, the best methods of fastening

A malfunction of the Aquastop system is signaled by a false triggering of the protection device. The water supply stops even if the sump is dry.

Decoding errors

All dishwasher models are equipped with a self-diagnosis program. It protects the device from serious damage. In critical situations, an error code appears on the electronic board, the meaning of each is given in the instruction manual.

In any model, errors are grouped into categories:

• malfunctions of drainage and water supply;
• deviations in the water heating process;
• malfunctions of water sensors and switches;
• electrical issues.

In the instructions for each error code there is a description of the likely malfunction and how to fix it. In the table there are malfunctions of BOSCH models.

DIY repair methods

All dishwasher malfunctions are related to water quality, non-level installation, long communications, power surges, poor-quality detergents. It is necessary to install and use the device in strict accordance with the instructions, then the dishwasher will determine the due date without serious damage. Minor malfunctions are easy to fix.

Checking and cleaning the intake filter

The water supply valve is equipped with a filter. If the water is hard, plaque builds up in it. The blockage slows the flow of fluid, causing the filter to fail. Clean the filling as follows:

• the device is disconnected from the network;
• unscrew the inlet hose;
• output the mesh;
• wash under a strong stream of water;
• put the net and the pipe back in place.

In the latest models, the automation checks the state of the filling filter, if necessary, displays an error code on the screen.

Problems with the Aquastop system

It is necessary to tilt the body of the dishwasher. Inspect the pallet, if there is water in it, drain it. Turn the float switch to the off position. These actions are performed when the E15 error code lights up on the display, but there is no leak.

Intake valve

Check the performance of the inlet valve when the PMM is disconnected from the network. Use an ohmmeter and tools - a screwdriver, pliers. They put the car on its side. The back panel is unscrewed. Unscrew the hose, which is connected to the solenoid valve, dismantle the bottom of the dishwasher.

The solenoid valve is removed from the socket, disconnected from the branch pipe and the resistance value is checked with an ohmmeter. If this does not correspond to the standard, a new part is installed.

Lock

Most often, dishwasher locks are replaced with new ones. Blockers installed in older models are being repaired.

Look at Also

Step-by-step instructions and rules for applying decorative plaster to the walls with your own hands

They have a simple design:

• plastic box;
• sensor;
• antennae.

Broken antennae are replaced with a thin metal plate. It is screwed to the body with self-tapping screws.

Checking and repairing the pressure switch

To check and, if necessary, replace the pressure switch, the machine is disconnected from the mains. Turn it upside down. Remove the bottom cover. Disconnect the float sensor. Using pliers, disconnect the tube from the tank. An inspection is carried out, if there are blockages, they are eliminated. Blow into the pressure switch tube. The clicks indicate the health of the device. The health of the electronics is checked with a multimeter:

• the probes of the measuring device are installed on the contacts;
• the pressure switch is operational if the device has "0".

If the sensor is defective, it is replaced.

Possible problems

If the Aquastop system is triggered, they look for the cause of the water leak. There are several options:

• the machine is not level, so the water overflows;
• the wrong quality detergent has been added, a large amount of foam forms in the tank;
• the water level sensor is defective, to check it, open the door during operation, if the water overflows, it must be replaced;
• during work, steam comes out of the sink, which means that the door seal is damaged, has lost its elasticity, or the door hinges need to be adjusted;
• the leakage protection system is triggered due to the fact that the return spring broke, jumped.

Additional tips and tricks

It is difficult to understand why the dishes are dirty after washing. This happens when the household appliance is used incorrectly and when it malfunctions. Dirt and plaque on the nozzles, the filters alter the quality of the wash. To avoid this, the dishwasher is cleaned regularly every 4 months:

• a bag with a cleaning agent is placed in the tank;
• start a program with a water temperature > 60°C.

The gaskets are hand washed in lukewarm water. Outlet pipes are unscrewed, washed. Fat dissolving agents are added to the water. In order for the dishwasher to work without interruptions, they buy high-quality products for PMM, add salt in time, pour in rinse aid.