SOI/DT 2006-01 dmm 37/71 599 37 47-13
5.4.2.1 "Door open" conditions
The main PCB, before sending the door aperture signals, checks for the following conditions:
• The drum must be stationary (no signal from the tachymetric generator)
• The water level must not be higher than the lower edge of the door
• The temperature of the water must not be higher than 40º C.
5.4.2.2 Automatic release device
In the event of a power failure, or if the appliance is switched off using the ON/OFF switch, or if there is a
fault in the solenoid valve, the bi-metal PTC cools within a period of between 55 seconds and about 4
minutes (at a temperature of 65°C), thus releasing the door.
5.4.2.3 Protective cut-out for solenoid valve
A PTC, connected in series to the solenoid valve, serves as a current limiter (i.e. overheating cut-out) in the
following cases:
→ If the triac on the main PCB is short-circuited
→ If the START/PAUSE button is pressed repeatedly (more than 10 times)
5.4.3 Electrical symbol
5.4.4 Circuit diagram
1. Main switch
2. Solenoid valve
3. PTC protective solenoid valve cut-out
4. Bi-metal PTC
5. Connector
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