Grundfos CIU 501 Instructions

English (GB)
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14.2 Fault finding CIM/CIU 250
Faults in the CIU 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).
14.2.1 LED status
CIU 250 connected to an E-pump
CIM 250 fitted in the CIU 250
Fault (LED status) Possible cause Remedy
1. Both LEDs (LED1 and LED2) remain off
when the power supply is connected.
a) The CIU 250 is defective.
Replace the CIU 250.
2. The LED for internal communication
(LED2) is flashing red.
a) No internal communication between the
CIU 250 and the E-pump.
• Check the cable connection between the
E-pump and the CIU 250.
• Check that the individual conductors have
been fitted correctly.
• Check the power supply to the E-pump.
3. The LED for internal communication
(LED2) is constantly red.
a) The CIU 250 does not support the
connected version of the E-pump.
Contact the nearest Grundfos company.
4. The LED for GSM/GPRS
communication (LED1) is flashing
yellow. See signal 1 in fig. 16 on
page 12.
a) The SIM card has not been inserted. Insert the SIM card.
See section 6.1.2 Inserting the SIM card.
b) The SIM card has not been inserted
correctly.
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 for instance 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 25X SMS commands" (supplement to
installation and operating instructions) on
the CD-ROM supplied with the GSM
module.
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
Grundfos E-pump.
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
CIM 250 and the Grundfos E-pump.
Ensure that the CIM 250 is fitted correctly in
the Grundfos E-pump.
3. The LED for internal communication
(LED2) is constantly red.
a) The CIM 250 does not support the
Grundfos E-pump connected.
Contact the nearest Grundfos company.
4. The LED for GSM/GPRS communication
(LED1) is flashing yellow. See signal 1 in
fig. 16 on page 12.
a) The SIM card has not been inserted. Insert the SIM card.
See section 6.1.2 Inserting the SIM card.
b) The SIM card has not been inserted
correctly.
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 for instance 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 25X SMS commands" (supplement to
installation and operating instructions) on
the CD-ROM supplied with the GSM
module.

Grundfos CIU 501 Specifications

General

Brand	Grundfos
Model	CIU 501
Category	Controller
Language	English