Grundfos IO Instrucciones De Instalación Y Funcionamiento página 17

5.6.3 LED3 for indication of system status
The LED3 (pos. 13) flashes green when communication to one or more pumps has been established. If the
IO module cannot recognise the pumps, the LED3 (pos. 13) will be permanently green.
1
2
3
4
5
Pulse
1 second
LED flash pattern during start-up
Fig. 12
Pos. LED3 status
1 Illuminates for 2 seconds, then a delay of 1 second.
Pulsating green, 1 pulse per second, then a delay of
2
1 second.
Pulsating green, 2 pulses per second, then a delay of
3
1 second.
Pulsating green, 3 pulses per second, then a delay of
4
1 second.
Pulsating green, 4 pulses per second, then a delay of
5
1 second.
2 seconds 1 second
Description
No pumps detected by the IO module.
One pump installed in the pit.
Two pumps installed in the pit.
Three pumps installed in the pit.
Four pumps installed in the pit.
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