Grundfos Multilift M Series, Installation And Operating Instructions Manual

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English (GB)
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6.4 Description of fault indications
If a fault occurs, the symbol will be visible, an audible alarm will be given by the buzzer and the fault code will be written by means of
the 14-segment characters in the display. To see the kind of fault, if it is automatically reset and the code is not longer visible, open the
fault log (see fig. 13). When you leave the fault log, the symbol will disappear.
The last 20 faults are stored in the fault log as fault codes. The meaning of the fault codes are described in the table below:
Fault
code
Meaning
Displayed
text
Flashing
symbols
How to
reset fault
indications Description
Auto Man
F001 Phase sequence failure F001 ●
(Only three-phase pumps)
The phase sequence between control board and power
supply is wrong. See fig. 14.
F002 One phase missing F002 ● ●
(Only three-phase pumps)
One phase is missing.
F003 High liquid level F003 ● ● The liquid level is high in relation to preset value.
F004 Sensor failure SENSOR - ● ● Sensor signal out of range or lost.
F005 Overtemperature, pump 1 TEMP ● ●
Motor thermal switches connected to the controller will
stop pump in case of overheating.
F006 Overtemperature, pump 2 TEMP ● ● Not relevant for Multilift M.
F007 Overcurrent, pump 1 F007 ●
The pump is stopped if an overcurrent is measured for a
certain period of time (blockage protection).
F008 Overcurrent, pump 2 F008 ● Not relevant for Multilift M.
F009 Undercurrent, pump 1 F009 ● ●
The pump is stopped if an undercurrent is measured for a
certain period of time (dry running protection).
F010 Undercurrent, pump 2 F010 ● ● Not relevant for Multilift M.
F011
Operating time exceeded,
pump 1
F011 ● ●
The pump is stopped if normal operating time of the pump
is exceeded, e.g. due to venting problems of pump
housing, closed discharge valve (forgotten to open it after
service/maintenance), forgotten to switch back to
automatic mode, if ON-OFF-AUTO switch is set to "ON"
for service/maintenance. A subsequent emergency
operation starts and stops the pump automatically until
the controller gets a regular stop signal from the sensor.
The controller then switches back to normal operation.
F012
Operating time exceeded,
pump 2
F012 ● ● Not relevant for Multilift M.
F013 External fault EXT - ●
An external level switch can be connected to the
controller to give an alarm when basement outside the
lifting station is flooded by groundwater or water from
burst water pipe.
F014 Battery failure BAT - ● ● The battery is empty and must be replaced.
F015
Relay or contactor does
not open, pump 1
RELAY ●
The pump receives a signal to stop, but does not react.
This situation is detected by current measurement.
F016
Relay or contactor does
not close, pump 1
RELAY ●
The pump receives a signal to start, but does not react.
This situation is detected by current measurement.
F017
Relay or contactor does
not open, pump 2
RELAY ● Not relevant for Multilift M.
F018
Relay or contactor does
not close, pump 2
RELAY ● Not relevant for Multilift M.