Description Of Fault Indications - Grundfos Multilift MD.12.1.4 Instrucciones De Instalación Y Funcionamiento

6.4 Description of fault indications

If a fault occurs, the symbol
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
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
Meaning
code
Phase sequence
F001
failure
One phase
F002
missing
F003 High liquid level
F004 Sensor failure
Overtemperature,
F005
pump 1
Overtemperature,
F006
pump 2
Overcurrent,
F007
pump 1
Overcurrent,
F008
pump 2
Undercurrent,
F009
pump 1
Undercurrent,
F010
pump 2
Operating time
F011
exceeded, pump 1
Operating time
F012
exceeded, pump 2
F013 External fault
F014 Battery failure
Relay or contactor
F015 does not open,
pump 1
Relay or contactor
F016 does not close,
pump 1
Relay or contactor
F017 does not open,
pump 2
Relay or contactor
F018 does not close,
pump 2
will be visible, an audible alarm will be given by the buzzer and the fault code will be written by means of
Reset of
fault
Displayed Flashing
indications Description
text symbols
Auto Man
F001
F002 ●
F003 ●
SENSOR - ●
TEMP ●
TEMP ●
F007
F008
F009 ●
F010 ●
F011 ●
F012 ●
EXT -
BAT - ●
RELAY
RELAY
RELAY
RELAY
will disappear.
(Only three-phase pumps)
● The phase sequence between control board and power supply is
wrong. See fig. 14.
(Only three-phase pumps)
●
One phase is missing.
● The liquid level is high in relation to preset value.
● Sensor signal out of range or lost.
Motor thermal switches connected to the controller will stop
●
pump 1 in case of overheating.
Motor thermal switches connected to the controller will stop
●
pump 2 in case of overheating.
Pump 1 is stopped if an overcurrent is measured for a certain
●
period of time (blockage protection).
Pump 2 is stopped if an overcurrent is measured for a certain
●
period of time (blockage protection).
Pump 1 is stopped if an undercurrent is measured for a certain
●
period of time (dry running protection).
Pump 2 is stopped if an undercurrent is measured for a certain
●
period of time (dry running protection).
Pump 1 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.
Pump 2 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.
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.
● The battery is empty and must be replaced.
Pump 1 receives a signal to stop, but does not react.
●
This situation is detected by current measurement.
Pump 1 receives a signal to start, but does not react.
This situation is detected by current measurement.
Pump 2 receives a signal to stop, but does not react.
●
This situation is detected by current measurement.
Pump 2 receives a signal to start, but does not react.
This situation is detected by current measurement.
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