English (GB)
16
2004 External fault
One of the digital inputs
• DI2 (see display 3.9)
• DI3 (see display 3.10)
• DI4 (see display 3.11) is set to External fault, and
the input has been or is still closed.
Check if the digital input set to External fault
is open or closed.
• If the input is closed, reset the alarm
cause in the external control circuit.
• If the input is open (there is no fault signal
from the external control circuit):
– Pull the terminal block for the external
input signals out of CUE.
• If the warning disappears, the fault is
overload in the control circuit for the
external setpoint.
• If the warning does not disappear, contact
Grundfos Service.
See section 4.4 Checking the intermediate
voltage.
A
2007
Too high bearing
temperature
The D-end motor bearing is too hot. The motor
cooling is not at optimum:
a) The motor is so dirty that optimum cooling
cannot be achieved.
Clean the motor.
W
b) The fan is so dirty that optimum cooling cannot
be achieved.
Replace the fan.
c) The bearing is not lubricated correctly. Check the lubrication of the bearing.
This is the normal state if the temperature
exceeds the factory setting selected for the
motor.
2008
Too high bearing
temperature
The ND-end motor bearing is too hot.
Motor cooling is not at optimum:
a) The motor is so dirty that optimum cooling
cannot be achieved.
Clean the motor.
A
b) The fan is so dirty that optimum cooling cannot
be achieved.
Replace the fan.
c) The bearing is not lubricated correctly. Check the lubrication of the bearing.
This is the normal state if the temperature
exceeds the factory setting selected for the
motor.
2010
Setpoint signal
outside range
External setpoint (terminal 53):
The external setpoint has fallen below these control
values for more than 500 ms:
Type: 4-20 mA: Alarm under 2 mA (reset over 3
mA).
Type: 2-10 V: Alarm under 1 V (reset over 1.5 V).
The types 0-20 mA and 0-10 V are not monitored.
A
Fault at startup:
a) The setting of contact A53 for selection of signal
type is incorrect.
Set the contact correctly according to the
settings in the CUE installation and
operating instructions.
b) The setting in display "3.3 Ext. setpoint" is not
correct for the signal in question.
Correct the sensor setting.
c) The connection of the external setpoint signal is
incorrect.
Correct the setpoint signal.
d) The signal transmitter or the signal cable
defective.
If the signal transmitter or cable is defective,
replace the defective part.
Fault after startup:
a) Missing voltage supply to the external setpoint
signal.
Check if the voltage supply is connected.
See the CUE installation and operating
instructions for further information.
Alarm
code
Description Cause Remedy Type
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