12
13
Anti-reverse version 2pcs / RS485 and DRED version 1pcs (This connector already
pre-installed inside the inverter).
②
STT 4-12kW 2pcs / STT 15kW 3pcs / STT 17-25kW 4pcs.
③
DRED version only (This connector already pre-installed inside the inverter).
Item Indicator
Status
Description
1
Power
Indicator
Off
No input voltage detected or input voltage is too low.
Slow flashing
Inverter powered on, waiting for the grid connection.
Quick flashing
Inverter detected grid power and entered self-test status.
Always on
Normal, grid-connected and power generated.
2
Alarm
Indicator
Always on
An alarm or fault is detected, and the display can view the specific
fault information.
Off
The inverter is running normally.
Slow flashing
The monitoring device is not connected to the router or is not
connected to the base station.
Quick flashing
The monitoring device is connected to the router or connected to
the base station but not connected to the server.
3
OLED
Display
On
Display the inverter operating information.
Off
If the button pressed without any response, the screen is faulty or
not well connected.
4
Button
Physical
button
Switch OLED display information and set parameters by short
press and long press.
sunways
3.3 Display Interface
Figure 3-6 Display interface
Inverter × 1
Wall Bracket × 1
Expansion Bolt × 5
3Pin Terminal × 1 ①
PV Terminal × 2 ②
Figure 3-7 Packing list
3.4 Packing List
The package of the inverter includes the following accessories. Please check whether the
accessories in the packing box are complete at the first time when receiving the goods. See
Figure 3-7 for the packing list:
4. Product Installation
4.1 Selection of Installation Location
The Sunways STT 4~25kW series is designed with IP65 protection for indoor and outdoor
installations. When selecting an inverter installation location, the following factors should be
considered:
1) The wall on which the inverter is mounted must be strong and can withstand the weight of the
inverter for a long time.
2) The inverter needs to be installed in a well-ventilated environment.
3) Do not expose the inverter directly to strong sunlight to prevent the power derating due to
excessive temperature.
4) The inverter should be installed in a place with shelter to prevent direct exposure to sunlight
and rain.
5) Install the inverter at the eye level for easy inspection of screen data and further maintenance.
6) The ambient temperature of the inverter installation location should be between -30 ° C and
60 ° C.
7) The surface temperature of the inverter may reach up to 75 ° C. To avoid risk of burns, do not
touch the inverter while it’s operating and inverter must be installed out of reaching of children.
4.1.1 Recommended installation location of the inverter, as shown in Figure 4-1:
WiFi/GPRS(Optional)
AC Terminal × 1
Ground Terminal × 1
6Pin Terminal × 1
③
Note
Inspection
Report
User
Manual
Quick
Guide
User Manual× 1
Quick Guide × 1
Inspection Report × 1
①
