41
22. Troubleshooting
22.1 Warning and alarm list
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.
22.2 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.
22.2.1 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.
22.2.2 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 (S
tart/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.
22.3 Indicator lights
The table show the function of the indicator lights.
22.4 Signal relays
The table show the function of the signal relays.
See also fig. 30.
Code and display text
Status
Operat-
ing mode
Reset-
ting
W
ar
ning
A
larm
Lo
ck
ed
a
la
rm
1
Too high leakage
current
z
Stop
Man.
2
Mains phase failure
z
Stop
Aut.
3
External fault
z
Stop
Man.
16
Other fault
z
Stop
Aut.
z
Stop
Man.
30
Replace motor bearings
z
–
Man.
3)
32
Overvoltage
z
–
Aut.
z
Stop
Aut.
40
Undervoltage
z
–
Aut.
z
Stop
Aut.
48
Overload
z
Stop
Aut.
z
Stop
Man.
49
Overload
z
Stop
Aut.
55
Overload
z
–
Aut.
z
Stop
Aut.
57
Dry running
z
Stop
Aut.
64
Too high CUE
temperature
z
Stop
Aut.
70
Too high motor
temperature
z
Stop
Aut.
77
Communication fault,
duty/standby
z
–
Aut.
89
Sensor 1 outside range
z
1)
Aut.
91
Temperature sensor 1
outside range
z
–
Aut.
93
Sensor 2 outside range
z
–
Aut.
96
Setpoint signal outside
range
z
1)
Aut.
148
Too high bearing
temperature
z
–
Aut.
z
Stop
Aut.
149
Too high bearing
temperature
z
–
Aut.
z
Stop
Aut.
155 Inrush fault
z
Stop
Aut.
175
Temperature sensor 2
outside range
z
–
Aut.
240
Relubricate motor
bearings
z
–
Man.
3)
241 Motor phase failure
z
–
Aut.
z
Stop
Aut.
242 AMA
2)
did not succeed
z
–
Man.
Indicator
light
Function
On
(green)
The pump is running or has been stopped by
a stop function.
If flashing, the pump has been stopped by the
user (CUE menu), external start/stop or bus.
Off
(orange)
The pump has been stopped with the On/Off
button.
Alarm
(red)
Indicates an alarm or a warning.
Type
Function
Relay 1
•
Ready
•
Alarm
•
Operation
•
Pump running
•
Warning
•
Relubricate.
Relay 2
•
Ready
•
Alarm
•
Operation
•
Pump running
•
Warning
•
Relubricate.
Grundfos.bk Page 41 Friday, July 30, 2010 10:10 PM
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Grundf
os CU
E
