Grundfos CIM 200, User Manual

Page: 82 / 94

English (GB)
82
16.2 CIM 250
Faults in the CIM 250 can be detected by observing the status of
the two communication LEDs. See the table below and section
3.3 Modbus GSM/GPRS (CIM 250)
.
16.2.1 LED status
Fault (LED status) Possible cause Remedy
1. Both LEDs (LED1 and LED2) remain off
when the power supply is connected.
a) The CIM 250 is fitted incorrectly in the
CU 36X.
Ensure that the CIM 250 is fitted/connected
correctly.
b) The CIM 250 is defective. Replace the CIM 250.
2. The LED for internal communication
(LED2) is flashing red.
a) No internal communication between the
CU36X and the Grundfos product.
Ensure that the CIM 250 is fitted correctly in
the CU 36X.
3. The LED for internal communication
(LED2) is constantly red.
a) The CIM 250 does not support the
Grundfos product connected.
Contact the nearest Grundfos company.
4. The LED for GSM/GPRS communication
(LED1) keeps flashing yellow. See signal
1 in fig.
13 on page 11 .
a) The SIM card has not been inserted in
CIM 250.
Insert the SIM card.
See section
6.1.2 Inserting the SIM card
.
b) The SIM card has not been inserted
correctly in CIM 250.
Insert the SIM card.
See section
6.1.2 Inserting the SIM card
.
c) The SIM card PIN code is not correct. Enter the correct PIN code.
See section
6.1.2 Inserting the SIM card
.
d) No connection to the GSM network. • Check the connection to the antenna.
• Check the GSM coverage of the area
using e.g. a mobile phone.
• Use an external antenna and experiment
with the position.
5. The LED for GSM/GPRS communication
is pulsating yellow with single pulse, but
the CIM 250 cannot send or receive
SMS messages.
a) The CIM 250 has not been initialised. Follow the configuration procedure in "CIM
250 SMS commands" (supplement to
installation and operating instructions) on
the CD-ROM supplied with the GSM
module.
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