Fault Finding - Grundfos CIM 1 LON Serie Instrucciones De Instalación Y Funcionamiento

5. Fault finding

Faults in a CIM 1XX LON module can be detected by observing the status of the service LED (LED1) and the
LED for internal communication (LED2). See the table below.
CIM 1XX fitted in a Grundfos product
Fault (LED status)
1. The service LED (LED1)
remains off when the power
supply is connected.
2. The service LED (LED1) is
permanently on.
3. The service LED (LED1)
flashes when the power
supply is connected to the
CIM 1XX, turns off, turns on
again and remains
permanently on.
4. The service LED (LED1)
flashes every second.
5. The Grundfos product does
not react to changes of
settings, and the readout from
the LON network is incorrect.
The LED for internal
communication (LED2) is
permanently red.
6. The Grundfos product does
not react to changes of
settings, and the readout from
the LON network is incorrect.
The LED for internal
communication (LED2) is
flashing red.
Possible cause
a) The CIM 1XX has not been
fitted correctly in the Grundfos
product.
b) No power supply to the CIM
1XX.
c) The CIM 1XX is defective.
a) The CIM 1XX is defective.
a) The CIM 1XX has no
application software
(application-less).
b) The CIM 1XX is defective.
a) The CIM 1XX has not been
installed.
a) The CIM 1XX does not
support the Grundfos product
connected.
b) The LON application may be
wrong, for instance CIM 110
software where CIM 100
software is required.
a) The cable between the CIM
1XX and the Grundfos product
is connected incorrectly or
damaged.
Remedy
Fit the CIM 1XX correctly in the
Grundfos product.
Check the power supply to the
Grundfos product.
Replace the CIM 1XX.
Replace the CIM 1XX.
Try to download application
software via a LON installation tool
such as LonMaker.
Replace the CIM 1XX.
Install the CIM 1XX by means of a
LON installation tool such as
LonMaker.
Contact the nearest Grundfos
company.
Download correct software via a
LON installation tool such as
LonMaker.
Connect the cable correctly, or
replace the cable.
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