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9. Operating and fault indications
The two indicator lights (LED) on the front cover of PFU 2000/
PMU 2000 indicate pump operation (green) and/or fault (red).
Two external indicator lights (LED) can be connected instead of
the two indicator lights (LED) on the front cover.
The function of the indicator lights (LED) and the operating and
fault signal outputs appears from the table below.
The fault signal relay of the PMU 2000 will be deactivated for
15 minutes if any button has been pressed during the actual fault
condition and if “alarm suppression” “on” is selected (display
104).
Indicator lights Outputs PFU 2000 Outputs PMU 2000
Description
Fault
(red)
Operation
(green)
Fault Operation Fault Operation
Off Off
Electricity supply switched off
or supply failure.
Off
Permanently
on
At least one pump in each zone
is in operation.
Off Flashing
All pumps in at least one zone
have been stopped:
· via external on/off switch or
via function selector in
PFU 2000 (pos. STOP),
· via PFU 2000/PMU 2000.
Permanently
on
Off
At least one pump is stopped
due to fault.
Permanently
on
Permanently
on
At least one pump is or has
been stopped due to fault.
At least one pump in each zone
is in operation.
Permanently
on
Flashing
All pumps in at least one zone
have been stopped:
· via external on/off switch or
via function selector in
PFU 2000 (pos. STOP),
· via PFU 2000/PMU 2000.
At least one pump is or has
been stopped due to fault.
NCNO
C
NCNO
C
NCNO
C
NCNO
C
C
NO NC
C
NO NC
NCNO
C
C
NO NC
C
NO NC
NCNO
C
NCNO
C
NCNO
C
NCNO
C
NCNO
C
C
NO NC
NCNO
C
NCNO
C
C
NO NC
C
NO NC
C
NO NC
NCNO
C
NCNO
C
C
NO NC
NCNO
C
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