Grundfos Multilift M Montage- Und Betriebsanleitung Seite 17

Fault
Meaning
code
High-level alarm in the
F020
tank
F019
Communication fault
F117
High-level alarm in the
F020
tank
If a fault occurs, the red LED will flash, the symbol
visible and the fault will be added to the fault log. Furthermore,
the buzzer will be activated, the symbol
corresponding symbol will flash and the fault code will be
displayed. When the fault has disappeared or has been removed,
the controller will automatically switch to normal operation again.
However, the controller enables resetting of the fault indication
(visible and acoustic alarms) either manually (Man) or
automatically (Auto).
If manual resetting was selected in setup menu, the acoustic
alarm and red LED can be reset by pressing the button
The fault indication will be reset when the fault has disappeared,
has been removed or the ON-OFF-AUTO switch has been set to
OFF position.
You can get an overview of faults in the fault log in information
menu.
The symbol will be visible as long as the fault log is open.
If automatic resetting was selected in setup menu, the red LED
and the symbol will disappear, and the buzzer will be
deactivated again after the fault has disappeared, has been
removed or the ON-OFF-AUTO switch has been set to OFF
position. However, even if automatic resetting was selected,
some of the fault indications have to be reset manually. See the
table above.
Every 30 minutes the fault indication will be written from the
short-term memory into the long-term memory.
How to
reset fault
Displayed Flashing
indications Description
text symbols
Auto Man
F020
The
display is
off.
F117
F020
will be
will be visible, the
.
Alarm triggered by the additional float switch in the tank.
The piezoresistive sensor has failed to detect the start
level. The float switch starts a pump which runs for 20
seconds. The period is preset and can be changed via PC
● Tool.
Check the tank, pressure hose and the hose connections
for leakage.
The hose is connected correctly when you cannot pull it
out without pressing the locking mechanism.
Communication fault between the main board and the
display. As the display is off, you can only see the fault
●
code via PC Tool. Check the ethernet cable between the
main board and the display.
Communication fault between the main board and the
display. The display is on and shows the fault code F117.
●
Check the ethernet cable between the main board and
the display.
Alarm triggered by the additional float switch in the tank.
The piezoresistive sensor has failed to detect the start
level. The float switch starts a pump which runs for 20
seconds. The period is preset and can be changed via PC
● Tool.
Check the tank, pressure hose and the hose connections
for leakage.
The hose is connected correctly when you cannot pull it
out without pressing the locking mechanism.
Fig. 14 Changing phases of a three-phase controller with
phase inverter
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