Grundfos CIU 501 Instructions

English (GB)
12
6.2 Status LEDs
The CIM 250 GSM module has two LEDs. See fig. 12.
• Yellow/green status LED (LED1) for GSM/GPRS
communication.
Red/green status LED (LED2) for internal communication
between the CIM 250 and the E-pump.
LED1 (yellow/green)
Fig. 16 LED1 status
LED2 (red/green)
TM04 5194 4412
Pos. Status Description
1 Flashing yellow Searching for GSM network.
2
Pulsating yellow
(single pulse)
Connection to the GSM network
has been established.
3 Constantly yellow
Call-up connection has been
established.
4
Pulsating green
(single pulse)
Data are exchanged via GPRS.
5
Pulsating green
(double pulse)
Data are exchanged via the call-up
connection.
6 Green (3 sec.)
Sending or receiving an SMS
message.
Status Description
Off The CIM 250 has been switched off.
Flashing red
No communication between the CIM 250
and the E-pump.
Constantly red
The CIM 250 does not support the
connected version of the E-pump.
Constantly green
The connection between the CIM 250 and
the E-pump is OK.
1 sec.
3 sec.
1
6
4
5
3
2
Yellow
Green

Grundfos CIU 501 Specifications

General

Brand	Grundfos
Model	CIU 501
Category	Controller
Language	English