Grundfos CIM 500 Instrucciones De Instalación Y Funcionamiento página 11

CIM 500 fitted in a CIU 500
Fault (LED status)
1. Both LEDs remain off when
the power supply is
connected.
2. LED2 is flashing red.
3. LED2 is permanently red.
4. LED1 is permanently red.
5. LED1 is permanently red and
green at the same time.
6. LED2 is permanently red and
green at the same time.
Possible cause
a) The CIU 500 is defective.
a) No internal communication
between the CIU 500 and the
Grundfos product.
a) The module does not support
the Grundfos product
connected.
a) Fault in the Modbus/BACnet
configuration of the module.
a) Error in firmware download.
a) Memory fault.
Remedy
Replace the CIU 500.
• Check the cable connection
between the Grundfos product
and the CIU 500.
• Check that the individual
conductors have been
connected correctly, e.g. not
reversed.
• Check the power supply to the
Grundfos product.
Contact the nearest Grundfos
company.
Modbus: Check that SW1 is set to
"1".
Check that the Modbus IP address
configuration is correct. See
section A.4 Modbus TCP
configuration on page 112.
BACnet IP: Check that SW1 is set
to "2". Check that the BACnet IP
address configuration is correct.
See section A.5 BACnet IP
configuration on page 113.
Use the web server to download
the firmware again. See section
A.13 Update on page 121.
Replace the module.
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