MODULAR SUNWAY TG
TE OD
INSTALLATION GUIDE
106/
139
Rev. 03
– 01/06//2018
11. TROUBLESHOOTING
The SUNWAY TG TE products are completely protected against short-circuits and overvoltage caused by
system failure or temporary phenomena. Furthermore, the control system performs complete self-diagnosis
operations to help personnel solve any problems which may occasionally arise. The modular design of
Elettronica Santerno inverters makes repair and/or reset operations quick and easy to perform.
This chapter indicates the most likely causes of the most common problems. The steps to be taken to
remove these causes are also described.
NOTE
If the problem persists, please contact the Elettronica Santerno SpA CUSTOMER SERVICE.
11.1.
Self-diagnostics
The inverter’s self-diagnostics system detects and records most malfunctions and provides technical
support elements which are useful for problem solving.
The elements providing support for diagnostic functions are as follows:
•
Display/keypad, thanks to the messages which appear on the display and the indicator LEDs.
•
Indicator LEDs on the RS485 galvanic isolation board.
•
Indicator LEDs on the Data Logger board.
•
Indicator LEDs on the control board.
•
Mxxx measures relative to inverter functions, accessible from the display/keypad, in remote and/or
local remote control.
•
Inverter Fault List, accessible from the display/keypad, in remote and/or local remote control.
When a protection device trips or an alarm is given, the inverter stops and the ALARM LED comes on. The
corresponding alarm is displayed on the display/keypad.
When an alarm occurs, the inverter records it in the Alarms list together with the time of occurrence (Supply
Time and Operation Time), the status of the inverter and the value of certain sampling measurements taken
at the time of alarm tripping. The stored data is very useful in helping to determine the cause which triggered
the alarm and consequent removal of the alarm condition.
All the details relative to the alarms can be found in the Programming Guide.
11.2.
Malfunctioning at start-up
11.2.1. The inverter has stopped by itself
•
Check the inverter Enabling/Disabling key-operated selector switch (22SA1).
•
Check the status of the digital inputs by way of measurement M032 (see the Programming Guide) on
the displays in the DC modules. In particular, MDI1 (START STOP) and MDI2 (ENABLE must be
closed). The inverter is STOPPED if one of these three conditions is true: MDI1 open (X6 19-20
terminal board, AC module), stop command sent via remote connection and Stop button pressed.
11.2.2. The inverter does not start when the START button is pressed
•
Check that the PV OK LED is ON.
•
Check that the GRID OK LED is ON.
•
Check the status of the digital inputs, M032 measure (please refer to the Programming Guide).
•
Check that the C004 Remote Command parameter is not active (please refer to the Programming
Guide).
11.2.3. The PV OK LED is OFF
•
Check if the inverter disconnect switch is closed.
