Grundfos MGE F, Service Instructions Manual

Page: 14 / 32

English (GB)
14
Off On
The pump has stopped due to a fault
The pump has been stopped
due to one of the following
causes:
See the fault indication on Grundfos GO Remote or PC Tool E-products.
1. The pump is blocked or
overloaded.
Remove the blockage, or reduce the load.
2. The ambient temperature is
too high, or the cooling is
insufficient. Re-establish sufficient cooling.
3. Power supply fault:
– undervoltage
– overvoltage
– phase failure
– mains supply failure.
Check that the supply voltage at the source is within the stated voltage
range.
If not, re-establish correct power supply.
4. External fault. a) Has the digital input been set to external fault?
NO:
Correct the setting using Grundfos GO Remote or PC-Tool
E-products.
YES: Proceed to point b).
b) Check the external contactor for continuity when closed across
terminals 1-9.
T
M
0
2
1
60
5 0
6
0
1
NO:
Contact between terminals 1 and 9 is closed.
Seek the cause of fault in external signal transmitter.
YES:
Contact between terminals 1 and 9 is open.
The E-pump is OK. Proceed to the next fault possibility.
5. Other faults:
– wrong terminal box
– wrong configuration
– fatal fault.
• Replace the terminal box.
• Reconfigure the terminal box.
• Replace the terminal box.
Flashing,
1 Hz
Off
Normal operational stop
The pump has been stopped
• with the
button
• with Grundfos GO Remote
• using the Grundfos GENIbus
• by the motor start/stop function. (Input on terminal 2-3 is open).
Flashing,
1 Hz
On
Normal operational stop + indication of previous fault
The pump has been stopped
• with the
button
• with Grundfos GO Remote
• using the Grundfos GENIbus
• by the motor start/stop function, but was previously stopped due to a fault which has now disappeared.
Flashing,
5 Hz
On
The pump has been stopped due to a fault in the product
Pump is not running and
• communication with
Grundfos GO Remote is not
possible
• no reaction when you press
or
• fatal internal communication
fault in the pump.
Try resetting the fault by
• disconnecting the power supply
• waiting until all diodes are off
• re-establishing the power supply.
If this does not remedy the fault, the terminal box is defective. Replace the
terminal box.
Indicator lights
Condition/cause Remedy
Green Red
9: GND
1: DIGITAL INPUT
0/1