Wascomat W620 Classic, Service Manual

Page: 69 / 132

5
29
29. Door and door lock
Service
Manual
Fig.
4
4
The door lock unlocks the door
The programme unit requests door unlocking by
applying 0 V on input X92 of the door lock
controller.
The following check is made prior to unlocking of
the door:
• No water in drum - input X93 from level
guard B2 is closed = 0 V
• Motor not engaged - input X94 from motor
controller A107 open = 5 V
• Drum not turning - no pulses on input X95
from rotation sensor B3.
When the above conditions are met, the door
lock controller outputs an opening pulse on
output 96 to the door lock actuator/coil, which
then unlocks the door. Micro switches S4a and
S4b now interrupt the relays/switches. The drain,
water valves, heater and motor cannot now be
switched on.
Door lock
control
A31
Level
guard
B2
M1
Door lock
A41
Programme
unit A1
X92
X31
X96 X95 X93
X30
X94
Motor
module
A107
Rotation sensor B3
X304
X302
X27 X24