8.2 Auto reset
This function allows the pump to automatically check
if the operating conditions are back to normal. If the
operating conditions are back to normal, the alarm
indication will be reset automatically.
The factory setting is: ON
The auto reset function works as follows:
Alarm Auto reset action Configurable Default
Dry run
The pump will attempt eight restarts at five-minute
intervals. If not successful, this cycle will be repeated
after 24 hours.
In twin configuration Duty/Assist, there is no reset if
only one pump is in dry run alarm. If both pumps are in
dry run, the reset will be staggered.
In twin configuration Duty/Standby, the pump will
attempt to restart immediately independent of the
second pump.
YES ON
Anti-cycling
This function will attempt to reset after 12 hours, and
the pump will return to normal operation.
YES ON
Max. runtime None Fixed disabled
Missed twin
pump
Auto reset is performed by the system when
communication is reestablished.
Fixed enabled
8.3 Dry-running protection
If a dry-running alarm has been activated,
the cause should be identified before the
pump is restarted to prevent damage to
the pump.
The unit incorporates dry-running protection that
automatically stops the pump in case of dry-running.
The dry-running protection functions differently during
priming and operation.
8.3.1 Dry-running during priming
If the unit does not detect pressure and flow within 5
minutes after it has been connected to a power
supply, and the pump has started, the dry-running
alarm is activated.
8.3.2 Dry-running during operation
If the unit does not detect pressure and flow within 40
seconds during normal operation, the dry-running
alarm is activated.
8.3.3 Resetting of dry-running alarm
If the dry-running alarm has been activated, the pump
can be restarted manually by pressing [Reset]. If the
unit does not detect pressure and flow within 40
seconds after restarting, the dry-running alarm is
reactivated.
This protection is always ON.
Dry-running or water shortage.
8.4 Anti-cycling
If there is a minor leakage in the system, or a tap has
not been closed entirely, the unit will start and stop
the pump periodically. To avoid cycling, the anti-
cycling function of the unit will stop the pump and
indicate an alarm. The anti-cycling function can be
configurated in Grundfos GO Remote.
Off
If the pump starts 40 times in a fixed pattern, a LED
icon will signalize cycling. The pump will remain in
normal operation.
On
If the pump starts and stops in a fixed pattern, there is
a leakage in the system, and the pump will stop and
show red Grundfos Eye and LED icon indication.
The factory setting for this function is OFF.
Leakage in the system.
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