Troubleshooting; Warning And Alarm List; Resetting Of Alarms; Indicator Lights - Grundfos CUE 150 hp Notice D'installation Et D'entretien

15. Troubleshooting

15.1 Warning and alarm list

Code and display text
Too high leakage
1
current
2 Mains phase failure
3 External fault
16 Other fault
30 Replace motor bearings
32 Overvoltage
40 Undervoltage
48 Overload
49 Overload
55 Overload
57 Dry running
Too high CUE
64
temperature
Too high motor
70
temperature
Communication fault,
77
duty/standby
89 Sensor 1 outside range
Temperature sensor 1
91
outside range
93 Sensor 2 outside range
Setpoint signal outside
96
range
Too high bearing
148
temperature
Too high bearing
149
temperature
155 Inrush fault
Temperature sensor 2
175
outside range
Relubricate motor
240
bearings
241 Motor phase failure
2)
242 AMA did not succeed
1)
In case of an alarm, the CUE will change the operating mode
depending on the pump type.
2)
AMA, Automatic Motor Adaptation. Not active in the present
software.
3)
Warning is reset in display 3.20.
38
Status
Operat- Reset-
ing mode ting
Stop Man.
Stop Aut.
Stop Man.
Stop Aut.
Stop Man.
3)
– Man.
– Aut.
Stop Aut.
– Aut.
Stop Aut.
Stop Aut.
Stop Man.
Stop Aut.
– Aut.
Stop Aut.
Stop Aut.
Stop Aut.
Stop Aut.
– Aut.
1)
Aut.
– Aut.
– Aut.
1)
Aut.
– Aut.
Stop Aut.
– Aut.
Stop Aut.
Stop Aut.
– Aut.
3)
– Man.
– Aut.
Stop Aut.
– Man.

15.2 Resetting of alarms

In case of fault or malfunction of the CUE, check the alarm list in
menu OPERATION. The latest five alarms and latest five
warnings can be found in the log menus.
Contact a Grundfos technician if an alarm occurs repeatedly.
15.2.1 Warning
The CUE will continue the operation as long as the warning is
active. The warning remains active until the cause no longer
exists. Some warnings may switch to alarm condition.
15.2.2 Alarm
In case of an alarm, the CUE will stop the pump or change the
operating mode depending on the alarm type and pump type.
See section 15.1 Warning and alarm list.
Pump operation will be resumed when the cause of the alarm has
been remedied and the alarm has been reset.
Resetting an alarm manually
• Press OK in the alarm display.
• Press On/Off twice.
• Activate a digital input DI 2-DI 4 set to Alarm reset or the
digital input DI 1 (Start/stop).
If it is not possible to reset an alarm, the reason may be that the
fault has not been remedied, or that the alarm has been locked.
15.2.3 Locked alarm
In case of a locked alarm, the CUE will stop the pump and
become locked. Pump operation cannot be resumed until the
cause of the locked alarm has been remedied and the alarm has
been reset.
Resetting a locked alarm
• Switch off the power supply to the CUE for approx.
30 seconds. Switch on the power supply, and press OK in the
alarm display to reset the alarm.

15.3 Indicator lights

The table show the function of the indicator lights.
Indicator
Function
light
The pump is running or has been stopped by
a stop function.
On (green)
If flashing, the pump has been stopped by the
user (CUE menu), external start/stop or bus.
The pump has been stopped with the On/Off
Off (orange)
button.
Alarm (red) Indicates an alarm or a warning.

15.4 Signal relays

The table show the function of the signal relays.
Type Function
• Ready
Relay 1 • Alarm
• Operation
• Ready
Relay 2 • Alarm
• Operation
See also fig. 24.
• Pump running
• Warning
• Relubricate.
• Pump running
• Warning
• Relubricate.