Error d07 in the Bosch washing machine

Many people know that when the hatch door is not closed completely or not hermetically, the washing machine refuses to work, as an “accident” can occur. The unit signals a malfunction in various ways, one of which is that the SM gives an error d07 on the Bosch washing machine. This DTC indicates a problem with the sunroof lock. What to do in such a situation?

Let's see how UBL works

Before you begin active attempts to repair the UBL, you need to understand how the part is arranged, by what principle it works and what could cause a breakdown in order to correctly correct the situation. UBL - the device is electric, it is connected to the control module of the Bosch machine. It is located under the front wall of the washing machine and works as follows:

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

Attention! If you cannot open the door immediately after completing the washing mode, 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 can leave.

How to identify a breakdown?

The following symptoms 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 wash is completed, the inability to close the door even when pressed hard, the machine refuses to start the washing process.

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

Remove UBL

Surely you can diagnose a part malfunction only by removing it and inspecting it. To do this, do the following:

1. Unplug the machine.
2. Close the inlet valve, blocking the access of water to the tank.
3. Open the hatch door.

If the door is jammed when closed, it can cause difficulties. However, there is a solution to the problem. You need to put your unit on one side, unscrew the screws on the bottom wall of the washer and remove the bottom. You will see that you can easily stick your hand inside the unit and move the latch away from there, after which the door will immediately open.

Important! If you are not sure that you have enough strength to put 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 have access to the latch.

Now you can start dismantling the locking device. First you need to deal with the cuff of the hatch. Bend its edge, there you will see a clamp. If it is plastic, just “unfasten” it; if it is metal, gently pick it up and remove it. After that, you can easily tuck the cuff inside the drum so that it does not interfere with the work.

Unscrew the two bolts in the lock part and put your hand into the hatch for the housing. You can easily find the lock and understand that now only wires hold it in place. In order not to get confused in the future, take a picture of their location, and then disconnect the device from the contacts.

Checking and replacing a part

First of all, it is necessary to check the part with a tester or multimeter. One cannot do without an electronic circuitry for a castle. You must clearly understand how to act. Follow these steps:

• set the resistance measurement mode on the tester;
• 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;
• rearrange the probes to the common and neutral phases and look again at the display;
• if you see a number from 0 to 1 there, then the device is working.

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; for this, indicate the brand and model of your washing machine in the online store, or show the manager the unlocked lock in the sales department.

Putting a new element in its place is very simple. It is enough to perform all operations as if in the reverse order. Namely, insert the lock into the niche and connect it to the wires (a photo was previously taken for this), then screw in the bolts holding the lock. Now you can bend the cuff and secure it with a removed clamp. After the operations done, there is no doubt: the Bosch machine will no longer show the D07 code.