8
Troubleshooting
This is a guide to help resolve any problems that may arise during the ins-
tallation of the INGECON
SUN SMART U.
An explanation is also given as to how to perform simple component repla-
cement operations and adjustments of the equipment settings.
Any problems occurring in the Ingecon® Sun must be resolved by
qualified personnel, observing the general safety conditions set out
in this manual.
8.1 LED indicators
Some of the LEDs indicate some type of problem in the PV installation.
8.1.1 Green LED
This LED must be on when the start-up process and operation are normal,
whilst the other LEDS must remain off. There are three ON modes:
8.1.1.1 Slow flashing
To indicate on-hold status due to low irradiance. The flashing is every 3
seconds. When this alarm comes on, it means that the PV array has not
sufficient irradiance to provide the inverter with the minimum voltage to
delivery energy. This is the typical situation between sunset and sunrise or
when rain, clouds or other atmospheric phenomena darken the PV array
zone.
Should this situation arise on a day which is not particularly dark, then check
that the panels are clean and correctly connected.
8.1.1.2 Fast flashing
This flashing indicates that the PV array is providing sufficient voltage to
the inverter in order to deliver energy and that it is getting ready to start-up.
In this status, the inverter checks the grid parameters in order to delivery
current to the grid at the exact grid voltage and frequency. This process
lasts around one minute (configurable).
8.1.1.3 Light constantly on
The inverter is connected to the grid.
ESC
OK
green
yelow
red
Installation and Operation Manual
INGECON
®
SUN SMART U
AAS2000IKI05
AAS2000IKI05
Rev. _
Date: February 2011
Page 55
