English
28 WILO SE 07/2011
It is possible to erase the complete error memory
via the last menu item “CL
A”.
In the event of a sensor fault or broken sensor cable,
the pumps are no longer started. In such a case, it
might be necessary to run the system in emergency
operation (see 8.4).
8.4 Emergency operation
In the event of faults of the microcontroller board
or of the control functions of the control device,
an emergency operation function is available (Fig. 7).
Switches S10, S20, S30 and S40 (item 5) can be
used to control the pumps directly with an ana-
logue voltage between 0 ... 10 V, that is set via the
potentiometer (item 5a).
DANGER! Risk of fatal injury!
Use suitably insulated screwdrivers in accord-
ance with VDE specifications!
The terminals of motor protection, line protec-
tion and main switch may be live!
For this purpose, the switch for the corresponding
pump must be pushed towards the terminal strip.
The switch setting in the direction away from the
terminal strip corresponds to the factory setting.
In this case, the pumps are controlled by the con-
troller.
If you can't fix the malfunction, contact your
specialist or Wilo customer service.
Technical information subject to change with-
out prior notice!
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