Disabling the washing machine UBL

Sometimes it is not possible to immediately replace the UBL: the store does not have the required part or it is too expensive. The Internet does not help either - the order is usually delivered within 7-14 days. You have to either live this time without a washing machine, or try to “bypass” the electronic lock. A temporary solution would be to start the machine with the blocker turned off. Let's figure out how to disable the UBL of a washing machine and “deceive” the system.

Getting access to the castle

Disabling the UBL means closing its contacts - then you can start the washing machine without a blocker. But first, the device must be dismantled. The easiest way to do this is through the top cover. We proceed like this:

• disconnect the washing machine from the power supply;
• open the hatch door;
• look at the keyhole - the hole in which the door hook is fixed;
• We find two screws next to the well and unscrew them;
• unscrew the screws holding the top cover from the rear panel;
• push the cover away from you and, lifting and pressing the latches, disconnect it from the body;
• tilt the washing machine back so that the edge of the drum “unsticks” from the front wall;
• We insert our hand into the resulting gap until it reaches the blocker;
• We unhook the wires from the UBL and, pulling it towards ourselves, we take it out.

To turn off the UBL, you need to close contacts L and C on it.

There is another option for dismantling the UBL - through the hatch door. It is necessary to open the drum, remove the cuff with the clamps securing it, and then reach the device through the gap between the body and the tank. It's easier and faster, but riskier. The problem is with the rubber seal: it is very difficult to pull it back correctly. The slightest mistake will lead to leakage.

We create a “chain” without UBL

Dismantling the UBL is the first step. Then you should make sure that the “brains” of the washing machine think that the lock is working and activated. To deceive the control module, you need to close certain contacts on the “socket” of the device. Then the board will record that the lock is turned on and give permission to start the wash.

To understand where to close, you should understand the UBL contacts:

• when the cycle starts, the washing machine supplies voltage to contacts N and L;
• under voltage, the thermal coil heats up, and along with it the bimetallic plate;
• the plate bends, closing relays L and C;
• the board reads the signal and starts washing.

Carefully! Without a working UBL, the hatch is easy to open during washing!

Closing relays L and C is a signal to the control board that the electronic locking has been activated. Accordingly, to disable the UBL it is necessary to first “connect” the mentioned contacts. Any commensurate jumper will be suitable for these purposes.

After a forced closure, a new cycle does not start immediately. For a few minutes after turning on the start button, the board “thinks”, but in the end it gives the go-ahead for washing.

Some modern machines cannot be fooled by manually closing them. A special protective algorithm is programmed into their system, for which only a short circuit is not enough. If you try to manually “set up” the sensor will record a malfunction and display an error code on the display. But most washing machines do not notice the “extra” jumper and start.

   

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