What to do if the dishwasher does not turn on: the main reasons - Setafi

If the dishwasher does not turn on, it is necessary to inspect the control board, the condenser of the circulation pump and other elements. But the reason may turn out to be simpler - then it is enough to make sure that the network cable and the door lock are intact. About what to do in the first place, and how to independently carry out repairs, is described in this material.

Main failure cases

If the dishwasher from Bosch or other manufacturers does not turn on, the “behavior” of the device may be different:

1. In some cases, the unit starts up and even fills the water, but the sink itself does not go. As a rule, this is due to a breakdown of the heating element or the circulation pump.
2. The device turns on and the indicators on the screen light up. However, after pressing the "on" the dishwasher does not start, i.e. it does not draw water, and the cycle does not start. This can be explained by a malfunction of the water supply valve or a broken lock.
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3. The device turns on normally, but immediately after that the drain pump works, and the machine itself stops responding. This indicates the operation of the automatic aquastop system, which prevents leaks. Therefore, if the dishwasher does not turn on, you should inspect the pan and completely drain the water, and then wipe it dry. If the problem repeats, it is necessary to inspect the hose, pipes and other elements of the drain system.
4. It also happens that the Bosch dishwasher does not turn on at all, i.e. no indicator lights, no sound. In this case, you need to check the presence of electricity, as well as inspect the plug and cord. Perhaps the electronics failed after a voltage drop in the network. This is a more serious breakdown, for the elimination of which you will need to call a specialist.

What to check first

If the Bosch dishwasher does not turn on, the reasons can be quite harmless. Some malfunctions can be fixed independently, and in just a minute:

1. Check if the plug fits snugly into the socket.
2. Plug in another appliance to make sure it is working.
3. Check the fuse ("automatic") in the meter, which could be knocked out due to high voltage.
4. Make sure that the network cable (cord) is in order. It may be crushed - then a replacement will be needed, it is unsafe to use such a device.
5. You can also explain why the dishwasher does not turn on with a loosely closed door (as is the case with the washing machine). Perhaps the lock is out of order - then you need to replace it.

More serious reasons

If the described methods did not help, and still the Bosch dishwasher does not turn on, this indicates technical malfunctions. In some cases, self-repair is possible, in others you will have to invite the master. The most common reasons are as follows.

Control module failure

If the Bosch dishwasher does not start, more than half of the cases are due to a broken control module. It can fail as a result of a voltage drop in the network or when droplets of moisture enter. As a result, contacts burn out. In rare cases, a complete replacement of the board with the processor will be required.

Power button failure

When the Bosch dishwasher does not turn on, this may also be due to a breakdown of the power button or control sensor. This can happen due to careless pressing or in case of oxidation of the contacts. As a result, the device stops responding to commands. It is necessary to disassemble it, clean the contacts or put in new ones.

Lock breakage

If the dishwasher does not start, it may not be the electronics that have broken, but the lock that secures the door. As a result, it does not reach the end or does not close at all, so the wash cycle does not start. The most common repair is to replace the element.

The condenser of the circulation pump broke

Normally, this element starts the pump motor, but sometimes it can fail, due to which the wash does not start. The main symptom is extraneous sounds (the unit is buzzing). It can also completely stop working - in such cases, inspection and, if necessary, replacement of the part is required.

Damage to wiring or contacts

If there is an open in the circuit, there is no contact with the control unit, so the indicators do not light up, and when you press the buttons there is no reaction. This happens over time, as the wiring gradually wears out due to vibration. It can also be damaged by mice, which is important for private homes. This can explain why the dishwasher from Bosch or other manufacturers does not turn on.

In this case, you need to ring the wiring, inspect it to make sure it is intact. If some of the contacts are oxidized or burnt out, they are cleaned or the cable is completely replaced.

Self repair

After the reason is found why the dishwasher does not start, it is necessary to proceed with the repair. In some cases, if the breakdown is not very serious, it can be done independently.

Start button replacement

If it was possible to explain why the dishwasher does not start, the start button is broken, it should be replaced. To do this, they act like this:

1. Turn off the device.
2. Examine the control panel.
3. If the button is stuck, it can be carefully pulled out using a screwdriver or other thin object.
4. In case of contact with water, detergent, it is necessary to clean.
5. The panel is dismantled and "ringed" with a multimeter.
6. If there is no reaction, it is understandable why the dishwasher does not turn on. The button will need to be cleaned or replaced.

Capacitor replacement

If the capacitor breaks and the Bosch dishwasher won't turn on, here's what to do first:

1. Switch off the device, turn off the tap, disconnect the hose.
2. Remove the panel under the door.
3. Open the hopper door, remove the sprinkler and filter.
4. If the Bosch dishwasher does not turn on and does not light up, place it on the back panel.
5. Unscrew each pan screw, wiring (if any) and dismantle it.
6. Find the condenser attached to the circulation pump.
7. Inspect carefully - it may be burnt. After that, "ring" the contacts with a multimeter.
8. Inspect the wiring, the integrity of the contacts. Install a new capacitor if necessary.

Control module repair

If the Bosch dishwasher does not turn on, the reason may be related to the electronics. This is a serious case that requires professional repair. If you have the skill, you can do it yourself. The sequence of actions is as follows:

1. Open door.
2. Remove each bolt.
3. Close the door and remove the panel from the outside.
4. Remove wiring. First you need to take a few photos so as not to forget how to assemble the elements in reverse order.
5. If there is burnout on the board, it is necessary to replace the contacts. If too many of them are damaged, the board may need to be replaced. Otherwise, the Bosch dishwasher will not start.

When the Bosch dishwasher does not turn on, the control panel stops responding, not a single indicator is on. This clearly indicates an electronics failure. On the other hand, other elements may also be affected. If it is not possible to determine the exact cause, you must contact the service center.