Electrolux T5350 - External Connections for I;O Module Type 2

Service Manual
79
13.3 External connections to I/O module type 2
Inputs
The signal level may be 5 - 24V DC/AC or 100 - 240V AC. At 5 - 24V, the signal reference must be connected to 3
and at 100 - 240V to 4.
Note!
Do not mix potentials on the inputs.
Connecting excessive voltage (> 24V) to connection 3 may damage the I/O modules.
fig.6236