Error code D07 in a Bosch washing machine

Many people know that when the door isn't closed completely or sealed properly, the washing machine won't work, as it could malfunction. The machine signals problems in various ways, one of which is the Bosch washing machine displaying error code D07. This error code indicates a problem with the door locking device. What should you do in this situation?

Let's figure out how UBL works

Before actively attempting to repair the door lock, you need to understand how it works, how it operates, and what could have caused the problem so you can properly fix it. The door lock is an electrical device connected to the Bosch washing machine's control module. It's located under the front panel of the washing machine and operates as follows:

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

Important! If you can't open the door immediately after the wash cycle, this doesn't mean the door lock is broken. A properly functioning door lock will open with a delay to allow any remaining water to drain from the drum.

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 when pressing hard, the machine’s refusal to start the washing process.

Typically, there are two main reasons why a door lock system fails. The first is that the plates have simply worn out and can no longer perform their intended function. The second is mechanical problems, such as burnt-out contacts or other damage.

We remove the UBL

The only way to reliably diagnose a faulty part is to remove it and inspect it. To do this, follow these steps:

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

If the door is stuck closed, it can cause problems. However, there is a solution. Lay your washer on its side, remove the screws on the bottom panel, and lift the bottom off. You'll see that you can easily reach inside the washer and push the latch back, causing the door to open immediately.

Important! If you're unsure whether you have the strength to lay the washing machine on its side, you can perform the same operation from the top of the machine. Remove the cover by unscrewing the screws, and you'll have access to the latch.

Now you can begin dismantling the locking device. First, you need to remove the hatch cover. Bend back its edge, and you'll see a clamp. If it's plastic, simply unfasten it; if it's metal, carefully pry it up and remove it. After that, you can easily tuck the cover inside the drum so it doesn't interfere with operation.

Unscrew the two screws in the locking part and insert your hand into the hatch behind the housing. You'll easily feel the lock and realize that it's currently held in place only by wires. To avoid confusion later, take a photo of their location and then disconnect the device from the contacts.

Checking and replacing the part

First, you need to check the part with a tester or multimeter. You can't do this without the lock's electronic circuit. You need to clearly understand the procedure. 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 fine;
• 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, then the device is working properly.

Important! A faulty lock cannot be repaired, but replacing it is not a problem, as the part is inexpensive. The key is to choose the right part. To do this, specify the make and model of your washing machine in the online store, or show the removed lock to a sales representative in person.

Installing the new element in place of the old one is very simple. Simply perform all the steps in reverse order. Specifically, insert the lock into the recess and connect it to the wires (the photo was taken earlier for this purpose), then tighten the bolts holding the lock in place. Now you can bend the sleeve back and secure it with the clamp you removed. After completing these steps, you can rest assured: your Bosch washer will no longer display the D07 error code.

   

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