Bosch WAT28400 Repair Instructions page 28

Design and function
Fig. 25: Function of the door lock: unlocking
To unlock the door, voltage is applied briefly to the coil again. The switching block
and guiding rod return to the home position. The lock bolt stop is free and the 2nd
switching contact is opened.
The door lock can be mechanically unlocked via the emergency unlock
mechanism.
3.17.3 Emergency unlock application
Pull the emergency unlock downwards with a tool and release. The door can then
be opened using the handle.
2017-05-22 / DIS 113_58300000186503_ara_en_c Copyright by BSH Hausgeräte GmbH Page 28 of 85