Error d07 in a Bosch washing machine

Error d07 in a Bosch washing machine Many people know that when the hatch door is not closed completely or not tightly, the washing machine refuses to work, as an “accident” may occur. The unit signals problems in different ways, one of which is the SM displays error d07 on a Bosch washing machine. This trouble code indicates problems with the sunroof locking device. What to do in such a situation?

Let's figure out how UBL works

Before you begin active attempts to repair the UBL, you need to understand how the part is structured, on what principle it works, and what could have caused the breakdown in order to correctly correct the situation. UBL is an electrical device, it is connected to the Bosch machine control module. It is located under the front wall of the washing machine and works as follows:

An electric charge is applied to the bimetallic plastic.
Under the influence of current, the metal heats up and the plate bends.
The deformed element puts pressure on the lever.
The lever closes the door, and the “brain” of the washing machine immediately receives the command to start washing.

Attention! If you cannot open the door immediately after finishing the wash cycle, this does not mean that the UBL is broken. A working device, on the contrary, opens the hatch with a delay so that the remaining water from the tank has time to leave.

How to identify a breakdown?

The following signs indicate a real malfunction of the locking device: the above error code on the Bosch display, the inability to open the door even half an hour after the end of the wash, the inability to close the door even with strong pressure, the machine’s refusal to start the washing process.

As a rule, there are two main reasons why UBL does not work.The first is that the plates have simply worn out and can no longer perform their functions. The second is mechanical problems, for example, burnt contacts or some kind of damage.

We remove UBL

You can probably diagnose a faulty part only by removing it and inspecting it. To do this, do the following:

Disconnect the machine from the power supply.
Close the inlet valve, preventing water from entering the tank.
Open the hatch door.

If the door is stuck closed, this can cause problems. However, there is a solution to the problem. You need to place your unit on its side, unscrew the screws on the bottom wall of the washing machine and remove the bottom. You will see that you can easily put your hand inside the unit and push the latch out of there, after which the door will immediately open.

Important! If you are not sure that you have enough strength to lay the SM on its side, you can do the same operation through the top of the machine. Remove the cover by unscrewing the screws, and you will have access to the latch.

Now you can begin to dismantle the locking device. First you need to deal with the hatch cuff. Bend its edge, there you will see a clamp. If it is plastic, simply “unfasten” it; if it is metal, carefully pick it up and remove it. After this, you can easily tuck the cuff inside the drum so that it does not interfere with work. how to remove UBL Bosch

Unscrew the two bolts in the locking part and stick your hand into the hatch behind the body. You can easily feel the lock and realize that now only wires are holding it in place. To avoid confusion in the future, take a photo of their location and then disconnect the device from the contacts.

Checking and replacing parts

First of all, you need to check the part with a tester or multimeter. You can't do without an electronic lock circuit. You must clearly understand how to act.Follow these steps:

set the tester to resistance measurement mode;
connect the probes of the device to the phase and neutral contacts;
now look at the multimeter display, if you see a three-digit number there, then everything is in order;
move the probes to the common and neutral phases and look at the display again;
if you see a number from 0 to 1 there, it means the device is working properly.

Attention! An incorrect lock cannot be repaired, but replacing it is not a problem, since the part is not expensive. The main thing is to choose the right spare part; to do this, indicate the make and model of your washing machine in the online store, or personally show the manager the removed lock at the sales department.

Putting a new element in place of the old one is very simple. It is enough to perform all operations in reverse order. Namely, insert the lock into the niche and connect it to the wires (a photo was taken earlier for this), then screw in the bolts holding the lock. Now you can bend the cuff and secure it with the removed clamp. After the operations performed, you can be sure: the Bosch machine will no longer show fault code d07.