Energy 5KTL-D3/G2 User manual

Edition:1.0.0
USER MANUAL
Three Phase Grid-tied PV String Inverter

Preface
WARNING
CAUTION
DANGER
NOTICE
NOTE
Scope
Target Group
Inverters must be installed by professional electrical engineers who have obtained relevant
qualifications.
Indicates a potentially hazardous situation which, if not correctly
followed, will result in serious injury or death.
Indicates a potentially hazardous situation which, if not correctly
followed, could result in moderate or minor injury.
Indicates a potentially hazardous situation which, if not correctly
followed, could result in equipment failure to run, or property damage.
Call attention to important information, best practices and tips:
supplement additional safety instructions for your better use of the
inverter to reduce the waste of you resource.
VERSION ISSUED COMMENTS
1.0 11-Nov-22 First release
3
Conventions
Indicates an imminently hazardous situation which, if not correctly
followed, will result in serious injury or death.
Natural cooling series Fan cooling series Fan cooling series
5KTL-D3/G2
6KTL-D3/G2
8KTL-D3/G2
10KTL-D3/G2
10KTL-D3/G2P
12KTL-D3/G2
15KTL-D3/G2
12KTL-D3/G2P
15KTL-D3/G2P
17KTL-D3/G2
20KTL-D3/G2
22KTL-D3/G2
25KTL-D3/G2
30KTL-D3/G2
History
About This Manual
The following safety instructions and general information are used within this user manual.
This manual describes the installation, electrical connection, commissioning, maintenance, and APP
operation of the inverter. Please first read this manual and related documents carefully before using the
product and store it in a place where installation, operation and maintenance personnel can access it at
any time. The illustration in this user manual is for reference only. This user manual is subject to change
without prior notice.

CONTENTS
1. Safety
2. Product Introduction
3. Unpacking and Storage
4. Installation
5. Electrical Connection
About This Manual
Target Group
Scope
Conventions
1.1 Symbols Used
1.2 Safety Instruction
2.1 Product Overview
2.2 Model Definition
2.3 Product Appearance
3.1 Unpacking and Check
3.2 Storage Inverter
3.3 Identify Inverter
4.1 Selecting the Mounting Location
4.2 Mounting
5.1 Grounding
5.2 AC Connection
5.3 DC Connection
5.4 Communication Connection
6.1 Check before startup/shutdown procedure
6.2 Startup/Shutdown steps
6.3 Shutdown procedure
8.1 Inverter Troubleshooting
8.2 Maintenance
8.2.1 Routine Maintenance
8.2.2 Fan Maintenance
8.2.3 Removing the Inverter
5
4
Preface 6. Startup/Shutdown Procedure
7. User Interface
8. Troubleshooting and Maintenance
9. Technical Specifications

1. Safety
Before using the inverter, please read all instructions and cautionary markings on the unit and manual.
Put the instructions where you can take them easily.
The inverter of us strictly conforms to related safety rules in design and test. Local safety regulations
shall be followed during installation, operation and maintenance. Incorrect operation work may cause
injury or death and damage to the inverter and other operator or a third party.
To avoid injury and damage to the inverter and other operator,please follow the safety precautions.
7
6
Safety Safety
1.2 Safety Instruction
Installation and maintenance of inverters must be performed by qualified personnel, in accordance with
local electrical standards, wiring regulations and requirements of local power authorities.
The temperature of some parts of the inverter may exceed 60℃ during operation, do not touch the
inverter during operation to avoid being burnt.
Ensure children are kept away from inverters.
Take appropriate measures to avoid electric shock.
Don’t open the front cover of the inverter. Apart from performing work at the wiring terminal,
touching or changing components without authorization may cause injury to people, damage to
inverters and annulment of the warranty.
Ensure the output voltage of the proposed PV array is lower than the maximum rated input voltage of
the inverter; otherwise the inverter may be damaged and the warranty annulled.
When exposed to sunlight, the PV array generates dangerous high DC voltage. Please operate according
to our instructions, or it will result in danger to life.
Don’t insert or pull the terminals when the inverter is running.
After the inverter is powered off, the remaining electricity and heat may still cause electric shock and
body burns. Do not touch parts of inverter for 10 minutes after disconnection from the power sources.
Danger of high voltage!
Only qualified personnel may perform work on the inverter.
Grounding terminal
1.1 Symbols Used
Safety Symbol Description
Residual voltage exists after the inverter is powered off. It
takes 5 minutes for system to discharge to a safe voltage.
Danger of hot surface
Don’t dispose of the inverter with the household waste.
Do not disconnect under load!
5 mins
Environmental Protection Use Period
Refer to the operating instructions
The sign of caution stick on inverter.
Do not disconnect with load, otherwise there will be
danger of fire.

The three-phase grid-tied PV inverter converts the DC generated by PV panels into three-phase
alternating current and is delivered to the grid.
This series inverter is an important part of PV system and it is suitable for household use,
commercial use, fishery use, agricultural use and other scenarios.
2.1 Overview
2. Product Introduction 2.3 Product Appearance
PV strings Inverter AC Distribution Unit Grid
TN-S
L1
L2
L3
N
PE
PE
Transformer
TN-C
L1
L2
L3
PEN
PE
TN-C-S
L1
L2
L3
N
PE
PE
TT
L1
L2
L3
N
PE
PE
Transformer Transformer Transformer
The following is only for reference, specific please in kind prevail.
2.2 Model Definition
Model number descriptions (using 10KTL-D3/G2, 10KTL-D3/G2P as an example):
10KTL-D3/G2
Power(10KW)
Double MPPT; Three phase
Grid-tied;second generation
10KTL-D3/G2P
Power(10KW)
Double MPPT; Three phase
Grid-tied; second generation
Plus type
208.5mm 414.27mm
398mm
23
1
Number Description
1 DC Switch
2 LED Indicators
3 LCD Screen（Optional）
4 External ground terminal
Natural cooling series Fan cooling series
4
460mm
9
8
Product Introduction Product Introduction
190.5mm
480.5mm
Inverter Inverter Inverter Inverter
(Only take fan cooling as an example in appearance)
(Only take natural cooling as an example in appearance)
This series inverter is suitable for TN-S, TN-C, TN-C-S and TT grid system. Refer to the following figures:

9
10
Natural cooling series Fan cooling series 1 Fan cooling series 2
5 6 7 8
Number Description
5 PV terminal
6 RS485 communication port
7 WiFi/GPRS/LAN model communication port (Optional)
8 AC output port
9 External fan (It is only suitable for Fan cooling series)
Complete test and strict inspection shall be done before the inverter is sent out.
When receiving the inverter, check that the packing materials are intact.
After unpacking, examine the PV inverter and its fittings for damage and check that the deliverables
are complete.
3.1 Unpacking and Check
3. Unpacking and Storage
A B CDE
FGH I JK
Number Description Quantity
A The Inverter 1
B Bracket 1
C AC cover (with 4× M4 security screws) 1
D PV connectors 2 or 4
E File package 1
F Expansion screws groups 3
G M6 Security screw 2
H 6-Pin terminal 2
I WiFi/GPRS/LAN module (Optional) 1 (Optional)
JRemove tool for PV connector 1 (Optional)
KRS485 cover 1
11
Product Introduction Unpacking and Storage
NOTICE Contact your dealer immediately if there is any issue found during operation.
Or
Or

3.2 Storage Inverter
Number Description
1 Product name and model
2 Product technical parameters
3 SN Barcode
4 Approve and Safety identification
Ensure there is no electronical connections around ports of the PV inverter
before installation.
4. Installation
Product Name :
Product Model:
Max.Input Voltage：
Input Voltage Range ：
Max.Input Current：
Input Short Circuit Current：
Rated Output Voltage ：
Rated Output Frequency：
Max.Output Current ：
Rated Output Power：
Max.Apparent Power：
Adjustable Power Factor Range：
Enclosure：
Temperature Range：
Protective Class：
1
2
3
4
DANGER
After checking the outer packing, move the PV inverter to the designated installation position horizontally.
CAUTION
1. Please place the inverter horizontally on the foam or other soft pads and
ensure that the ports are free of load-bearing pressure to avoid inverter
damages or scratches.
2. The inverter is heavy, be careful to prevent the inverter from slipping
and hurting the operator when moving the inverter.
4.1 Selecting the Mounting Location
a. The storage inverter protection class is IP65 and can be mounted indoors or outdoors.
b. To ensure optimum operation and long service life, the ambient temperature must be below 50℃.
c. Do not install the inverter in a rest area since it will cause noise during operation.
d.The inverter carrier must be fire-proof. Do not mount the inverter on flammable building materials.
e. Ensure that the wall meets the requirements of the inverter installation.
f . Product label and warning symbols shall be clear to read after installation.
g. The installation height should be reasonable and make sure it is easy to operate and view the display.
h. Please avoid direct sunlight, rain exposure, and snow cover.
4.1.1 Installation Environment Requirements
12 13
Installation
Unpacking and Storage
If the inverter is not used immediately, please keep the inverter in a specific environment according to the
following requirements:
Do not unpack the inverter and put desiccant in the original box if the PV inverter is unpacked.
Store temperature range: -25°C~+60°C; Relative humidity range: 0~100%.
Don’t position the inverter leaning forward, excessively leaning backward, tilting laterally, or upside down.
Ensure that qualified personnel inspect and test the inverter before use if it has been stored for a long time.
Inverter body label. The following is only for reference, specific please in kind prevail!
3.3 Identify Inverter
No direct sunlight No Rain Exposure No snow cover
Snow cover
Direct Sunlight Rain Exposure

Upright Lean back ≤15° Horizontally
Mount the inverter vertically or tilted backward by max 15°. In order to facilitate the heat dissipation of
the inverter.
≤15°
Upside-down
≥600
≥600
≥600
≥600
Above: 600mm
Below: 600mm
Front: 1000mm
Both sides: 600mm
Installation along the same line for multiple inverters
600mm 600mm
≥1000
NOTICE
4.1.3 Installation Space Requirements
4.1.2 Mounting Requirements
The wrong installation mode causes the inverter to be damaged or unable to
work properly.
To ensure the operation of the inverter normally and easily, there are requirements on available spaces
of the inverter, e.g. to keep enough clearance. Refer to the following figures.
14 15
Installation Installation
7
51
27
Installation perspective schematic
354
64
8
8
15
20
294
27
8
Bracket plane size drawing
Unit: mm
(Only take fan cooling as an example in appearance)

To prevent damage of the inverter, please hang the inverter on the bracket
and confirm the reverse, do not loosen the handle until the inverter is fixed.
CAUTION
4.2 Mounting
DANGER
Step 1. Install the mounting bracket Step 2. Install the inverter.
Install the inverter on the bracket accurately and tighten the screws at both sides, as shown in Step 5 and
Step 6.
1.The walls must be fireproof and non-flammable materials, othewise there
is a fire risk.
2.Before drilling holes, check whether there are electric power pipes buried
in the walls to avoid risks.
(M6; 3 suites)
A B C D
Expansion screw group
Ø:10mm; Depth: 60mm
Set bracket horizontally.
Install bracket.
1
Mark the holes position on the wall.
2
Drill the holes.
3Install the expansion screw
4
5 6
2×M6 screw; 2 N·m
Tighten the screws at both sides.
Install the inverter.
16 17
Installation Installation
C & D
M6
2.5N·m
1 ) Use a level gauge to set braket horizontally, and then mark the position of the 3 holes on the wall.
Refer to Step 1. And drill 3 holes,10mm in diameter and 60 mm in depth. Refer to Step 1 and Step 2.
2) Knock the expansion screw kit into the hole together with a hammer. Refer to Step 3.
Note: Do not remove the nut unit.
3) After tightening 2-3 buckles, the expansion bolts are tight and not loose, and then unscrew the bolts,
spring washer, gasket. Refer to Step 3.
4) Install the bracket on the wall, the bracket screw is pointed at the expansion tube on the wall, then install
the gasket and tighten screw. Refer to Step 4.

System Connection
CAUTION
According to regulations, the secondary protection grounding can’t replace
the PE terminal connection of the AC cable. Ensure that both are grounded
reliably. Otherwise, fatal injury can occur due to the high voltage.
WARNING
5. Electrical Connection 5.1 Grounding
Electrical Connection Electrical Connection
If the positive pole or negative pole of the PV array is required to be
grounded, then the inverter output (to AC grid) must be isolated by
transformer in accordance with IEC63109-1, -2 standards.
Step2.Insert the exposed core wires into the crimping areas of the OT terminal and crimp them
using hydraulic pliers.
Step3.Remove the ground screws from the ground points.
Step1.Remove an appropriate length using a wire Stripper.
According to the EN50178 requirement, the right side of the device has a protective grounding connection.
Be sure to connect the protection ground cable to this port when installing the inverter.
The user can perform the ground connection according to the on-site condition.
PE
DANGER
Before electrical connection, please ensure
that both the AC and DC ends are powered off,
otherwise there will be a high voltage shock.
Grid
L1L2L3 N PE
PE
N
L3
L2
L1
PE
PV+
PV-
18 19
Screw M6 × 12mm; 3 N·m
OT Terminal OT6-6(5K-15K); OT16-6(17K-30K)
Ensure that the grounding resistance is less than 10Ω.
Items Remark
Yellow green lines S(Yellow green lines) ≥ S(PE line of DC cable)
S is the cross-sectional area.

5.2 AC Connection
1. Measure and access the voltage and frequency of the point to ensure that it meets the grid-tied
specifications of the inverter.
2. PE wire (GND) must be well grounded to ensure that impedance between Neutral wire and Earth
wire is less than 10Ω.
3. Disconnect the circuit breaker or fuse from the inverter and grid-connected access point.
4. Use the copper wire.
5. Follow these steps.
Select proper AC cables and OT terminals (5 wires)
Unscrew the nut of the cover and thread the AC cable (5 wires) cross the nut, threaded sleeve and
the cover. Then crimp the OT terminal and use heat shrink tubing or insulation tape for protection.
1
5.2.1 AC cable connection
To ensure that the inverter is safely disconnected from the grid, the independent AC breaker must be
configured for each inverter as a protective device.
5.2.2 AC Breaker and Leakage current protector
Inverter Model Recommended Value
5KTL-D3/G2, 6KTL-D3/G2, 8KTL-D3/G2
10KTL-D3/G2, 10KTL-D3/G2P, 12KTL-D3/G2, 12KTL-D3/G2P
15KTL-D3/G2, 15KTL-D3/G2P
20KTL-D3/G2
22KTL-D3/G2, 25KTL-D3/G2, 30KTL-D3/G2
Internal current detection equipment for inverter, the inverter detects the leakage of the power grid
that is greater than the reduced value, and will be disconnected quickly from the power grid. If the
external installation leakage protection device is installed, Its action electricity must be greater than
equal to 300mA.
Multiple inverters are not allowed to share a circuit breaker.
Load is not allowed to connect between the inverter and the AC breaker.
WARNIMG
40A
Range 4-6 6-16 10-16 16-20
Recommended 6 10 16 16
A Wire outer diameter(mm) 11-18 24-32 24-32 24-32
B Cross-sectional
area(mm²)
Note:It is recommended to use outdoor dedicate cables
with multiple copper cores.
Model 5K-15K 17K-20K 22K-25K 30K
No. Name
L
100mm(Recommended)
AB
L+2mm
Heat shrinkable tube
Wires threading and pressing.
Lock the AC cable to the corresponding AC terminals.
①Align the AC cover with the 4 holes and tighten it firmly with 4×M4 screws.
②Fasten the nut (waterproof cap).
Nut Torque
5K-15K M25 5.5N·m
17K-30K M40 12N·m
①4×M4 screws;1.2N·m
②
4
Electrical Connection Electrical Connection
20 21
3
2
17KTL-D3/G2
Screw Torque D
5K-15K M4 1.2N·m 10mm
17K-30K M5 2N·m 12.5mm
(Only take 25k model as an example)
D
L1 L2 L3 N PE
32A
20A
50A
63A

5.3 DC Connection
DANGER
PV modules generate electric energy when exposed to sunlight and can create an
electrical shock hazard. Therefore, when connecting the PV modules, shield them
with opaque cloth and ensure that DC switches are OFF.
To avoid electric shock, don’t touch the charge part and connect the terminals carefully.
Before connecting power cables, ensure the AC/DC switches are OFF.
When the inverter is connected to the grid, don’t plug in or plug out the PV strings.
Don’t perform any operation until the inverter is shut down.
WARNING
PV modules connected in series in each PV string must be of the same specifications.
The maximum open-circuit voltage of each PV string must be always lower
than or equal to its permitted range.
The maximum short circuit current of each PV string must be always lower
than or equal to its permitted range.
Ensure that the positive and negative terminals of each PV strings connected to the
inverter correctly.
The positive or negative terminals of PV strings can’t be connected with short circuit.
The total output power of all PV strings can’t exceed the maximum input power of the inverter.
NOTICE
The positive and negative terminals of PV modules can’t connect to PE wire (GND) ,
otherwise, the inverter will be damaged.
Ensure that the voltage of each PV string doesn’t exceed 1100V under any circumstances.
When the input voltage is 1000V to 1100V, the inverter will enter the standby state.
When the voltage returns to the MPPT operating voltage, namely 160V-1000V, the
inverter will return to the normal state.
Electrical Connection Electrical Connection
5.3.1 Preparation
22 23
Different PV module input configuration module table
Inverter models 5KTL-D3/G2 6KTL-D3/G2 8KTL-D3/G2 10KTL-D3/G2 10K1TL-D3/G2
PV Strings 2 2 2 2 2
MPPT current 15A/15A 15A/15A 15A/15A 15A/15A 15A/15A
166 panel 1 input 1 input 2 inputs 2 inputs 2 inputs
182 panel 1 input 1 input 1 input 2 inputs 2 inputs
210 panel Y-type wire input Y-type wire input Y-type wire input Y-type wire input Y-type wire input
Inverter Inside
MPPT1
MPPT2
PV1
PV3
PV Strings configuration (for 5KTL-D3/G2, 6KTL-D3/G2, 8KTL-D3/G2, 10KTL-D3/G2
and 10K1TL-D3/G2)
166 panel input configuration
1 input: using PV1 2 inputs: using PV1 and PV3
182 panel input configuration
1 input: using PV1 2 inputs: using PV1 and PV3
210 panel input configuration
Y-type wire input: using PV1 and PV3 Y-type wire connection diagram

Electrical Connection
24 25
Electrical Connection
Inverter models 10K1TL-D3/G2P 10KTL-D3/G2P 12KTL-D3/G2 15KTL-D3/G2
PV Strings
3 3 3 3
MPPT current 15A/30A 15A/30A 15A/30A 15A/30A
166 panel 2 inputs 2 inputs 3 inputs 3 inputs
182 panel 2 inputs 2 inputs 2 inputs 2 inputs
210 panel 1 input 1 input
1 input
(nonsupport over
configuration) NA
Inverter Inside
MPPT1
MPPT2
PV1
PV3
PV4
PV Strings configuration (for 10K1TL-D3/G2P, 10KTL-D3/G2P, 12KTL-D3/G2 and 15KTL-D3/G2) PV Strings configuration (for 15KTL-D3/G2P, 17KTL-D3/G2, 20KTL-D3/G2, 22KTL-D3/G2, 25KTL-D3/G2
and 30KTL-D3/G2)
166 panel input configuration
2 input: using PV1 and PV3 3 inputs: using PV1, PV3 and PV4
182 panel input configuration 210 panel input configuration
2 inputs: using PV1 and PV3 1 input: using PV3
I
nverter models 15KTL-D3/G2P 17KTL-D3/G2 20KTL-D3/G2 22KTL-D3/G2 25KTL-D3/G2 30KTL-D3/G2
PV Strings
4 4 4 4 4 4
M
PPT current 30A/30A 30A/30A 30A/30A 30A/30A 30A/30A 40A/30A
1
66 panel 3 inputs 3 inputs 4 inputs 4 inputs 4 inputs 4 inputs
1
82 panel 2 inputs 3 inputs 3 inputs 4 inputs 4 inputs 4 inputs
2
10 panel 2 inputs 2 inputs 2 inputs 2 inputs
2 inputs
(nonsupport ov
er
configuration)
3 inputs
Inverter Inside
MPPT1
MPPT2
PV1
PV2
PV3
PV4
166 panel input configuration
3 inputs: using PV1, PV3 and PV4 4 inputs: using PV1, PV2, PV3 and PV4

Electrical Connection
26 27
Electrical Connection
Before connecting the PV input to the inverter, ensure that the package meets the following
electrical specifications.
Inverter module Limit of each input open-circuit voltage Maximum allowable input terminal current
All 1100V 20A
Open-circuit voltage altitude derating curve of the inverter as shown in the following figure
2000m 3000m 4000m
1100V
950V
850V
Elevation(m)
Open-circuit voltage altitude derating curve of the inverter
NOTE To ensure that the inverter reaches the enclosure of IP65, it can only
use the connector provided by supply.
182 panel input configuration
2 inputs: using PV1 and PV3
210 panel input configuration
2 inputs: using PV1 and PV3
4 inputs: using PV1, PV2, PV3 and PV4
3 inputs: using PV1, PV3 and PV4
3 inputs: using PV1, PV3and PV4

5.3.2 PV Connection
PV connection please refer to below.
5.4 Communication Connection
WIFI
GPRS
RS485
WIFI/GPRS/RS485 Modules
5.4.1 Communication Mode Description
5.4.2 WIFI/GPRS/LAN Module Connection (Optional)
2 × M4 screw; 0.8N·m
WiFi/GPRS/LAN module connection please refer to below.
For details about APP settings, see the WIFI/GPRS/LAN Module Installation Guide in the packing case.
Loosen screws and
move the cover.
Tighten the
GPRS/WiFi/LAN
module and install antenna.
3
1
Install the GPRS/WiFi/LAN module,
make sure doesn’t fall off naturally.
2
Electrical Connection
Positive Connector
8~10mm
Note: DC cable should be dedicate PV cable(suggest using 4~6mm² PV1-F cable).
Click
Use crimping tool
to stitch.Limit buckle
can’t be crimped.
Negative Connector
Tighten the waterproof nuts
on each connector with a wrench
to avoid loosening.
PC
Test string voltage and confirm string polarity. Ensure that the DC switch is OFF.
8~10mm
Diameter
5~8mm
~~
~
~
Limit buckle
RS485 switching module monitors PV inverter's data status through collecting
and uploading data to Cloud server.
Module Function description
Table 5.4 Communications module description
You can use the following communication modes to implement communication:
Bluetooth, WIFI, GPRS and RS485 which are described as follows.
28 29
Electrical Connection
Bluetooth Module
You can turn on the Bluetooth function of the mobile phone, and set parameters and monitor data
of the inverter through the mobile APP.
WIFI module implements communication with Cloud server through wire and
wireless network to monitor PV inverter’s data status. For more details, refer to
WIFI Product Application Manual.
GPRS module implements communication with Cloud server through wire and
wireless network to monitor PV inverter’s data status. For more details, refer to
GPRS Product Application Manual.
Through DB9 communication interface is transferred to other communication modules to monitor
the inverter. The module and functions are shown in Table 5.4.
or
or

5.4.3 RS485 Connection
8mm
≤60mm
RS485Communication
cable (22AWG)
Nut
Threaded sleeve
1
2
3
4
5
6
A
B
A
B
PE
DO1
ALM
SIG
D12
D11
GND
Pin1 and 2
Pin3 and 4 Pin1 and 2 Data Logger
Pin3 and 4
Pin1 and 2
The multiple inverter network and RS485 communication are as follows:
2 × M4 screw; 0.8N·m
COM2
Step1 Loosen screws and remove the cover plate.
Step2 Wires making, threading and wiring.
Step3 Insert the 6-Pin terminal into the RS485 communication port.
Step4 Install the RS485 cover.
Step5 RS485 communication address setting.
PE
0.8~1.5N·m
④Go to Console>Communication Setting > RS485 Setting > Modbus Page, check the Modbus address(the default
value is 1),and click to modify the address as required if necessary.
5
1
2
34
Install RS485 following this steps:
Electrical Connection Electrical Connection
Pin Inverter
1 A
2 B
3 A
4 B
5 PE
6 PE
1 DO1
2 ALM
3 EXT_SIG
4 DI2
5 DI1
6 GND
30 31
RS485 Setting
ModBus
1
ModBus Address
Cancel OK
Number range is 1 to 247
Access Management
Maintenance
Grid Parameters
Power Limit
Communication Setting
Communication Setting
RS485 Setting
Basic Setting
Feature Parameters
Reactive Power Control
Other Setting
Logout
i
i
Quick Setup Chart Home Log Console
XXXXXXXX
0.00Wh 0.00kWh
E-Today E-Total
Basic
Current Power 0.00W
Peak Power 0.00W
E-Today 0.00Wh
E-Total 0.00kWh
Temperature -20.00℃
DC-Input
0.00W 0.00W
0.00W
XXXXXXXX
Quick Setup Chart Home Log Console
Masking Fault Detection
Wire stripping pliers are used to hold the wire, and
then the two nuts on the protective cover are lowered
to pass the communication wire through the nut,
threaded sleeve and main body of the protective cover.
Connect the different positive and negative signal
wires of the first RS485 cable from the data logger to
Pin1 and Pin2 of the 6-Pin terminal respectively. If
there is more than one inverter, connect Pin3 and Pin4
to Pin1 and Pin2 of another inverter terminal.
Scanning machine SN barcode
Can not find inverter code
Inverter List
LOGIN
Account name
Password
REGISTER NEW USER
Password forgotten
Local
Basic
Current Power 0.00W
Peak Power 0.00W
E-Today 0.00Wh
E-Total 0.00kWh
Temperature 0.00℃
DC-Input
i
Quick Setup Chart Home Log Console
*
*
Inverter Time Wrong
Do you want to synchronize date and
time with the mobile phone?
OK
CANCEL
XXXX.XXWh XXX.XXkWh
E-Today E-Total
XXXX.XXW XXXX.XXW
XXXXXXXX
XXXX.XXW
Remember Password
Bluetooth Connection
AP Connection
If you cannot recognize or have no barcode, select “Enter SN”
or “Manual connection”
Enter SN Turn on Flashlight Manual
connection
①Download the APP.
Scan the QR code on the inverter to download the APP.
Download the APP from the App Store or Google Play.
②Power on the inverter.
③Connect the Inverter.
Note: the APP should access some permissions such as inverter’s location. You need to grant all rights in all pop-up
windows when installing the APP or setting your phone.
Open the Bluetooth on your own phone, then open the APP. Then follow the instructions below.

6. Startup/Shutdown Procedure
6.1 Check before startup/shutdown Procedure
Check the following steps after installation.
No. Items
1 The inverter is firmly installed.
2 There is enough heat dissipation space, no external objects or parts left on the inverter.
3 It is convenient for operation and maintenance.
4 The wiring of the system is correct and firm.
5 Check whether the DC and AC connection are correct with a multimeter, and whether
there is a short circuit, break, or wrong connection.
6 Check whether the waterproof nuts of each part are tightened.
7 The vacant port has been sealed.
8 All safety labels and warning labels on the inverter are complete without occlusion
or alteration.
6.2 Startup Procedure
7. User Interface
The inverter display panel is composed of LED icon and LCD (Optional).
6.3 Shutdown Procedure
It may be necessary to shut down the inverter sometimes during the daily use. If necessary, please
follow the procedures:
WARNING
LED icon LCD(Optional)
Startup/Shutdown Procedure User Interface
OFF
ON
1
OFF ON
AC Circuit Breaker
Supply Main Switch
Startup procedure following the procedures:
2
DC Switch
3
Switch to ON
LED icon 4
Blue on (normal status)
5
Your system has been started up
Finishing
( The figure is only for reference)
See if there’s any on site
4
5 mins
Switch to ON
(
The figure is only for reference)
1
OFF ON
2
3
5
Your system has been shut down
OFF
ON
32 33
It takes 5 minutes for
system to discharge to
a safe voltage.
AC Circuit Breaker
Supply Main Switch
DC Switch
Switch to OFF
See if there’s any on site
Switch to OFF
(The figure is only for reference)
Finishing
(The figure is only for reference)
After the inverter is powered off, the remaining electricity and heat may still
cause electric shock and body burn. Do not touch parts of inverter for 10 minutes
after disconnection from the power sources.

Figure 7-2 LCD Screen
Meter Output
COM Warning Date
Status
E-Today E-Total Power A B C
COM
When WIFI/GPRS/Bluetooth is transferring data, icon will be ON, while no data transmission,
the icon will be off after 10s. When RS485 is transferring data, icon will be ON, while no data
transmission, the icon will be off after 10s.
Warning
When warning is triggered, icon will be illuminated: from left to right the first bit could be A/ B/ C,
it stands for warning type, and the second bit is warning code, please refer to warning code in table
for details.
Date
When external communications is normal and time zone is set correctly, the built-in clock of
inverter will be synchronized with server’s time. Without external communications, it is recommended
to use the mobile app to set up time through connecting Bluetooth to the inverter.
Status
Icon stands for PV strings, when inverter is standby status, MPPT voltage of the PV string
will be displayed in Meter zone.
Icon stands for grid, when voltage and frequency of power grid is in normal range, the
icon keeps on, or else, it blinks; when there is no voltage, the icon will be off.
Icon stands for energy flow, when inverter is in normal status, the icon will be on, or else it
will be off.
Meter
Normal status: today and total energy, MPPT
voltage and current are showed in turn.
Standby status: counter down value before
inverter start up.
Any status: setting parameters via APP, the
screen keeps for 5 seconds.
Normal status: output power, grid voltage
and current are showed in turn.
User Interface User Interface
Blue led blink Standby or startup state
slowly 1s/time (not connected to the grid)
Blue on Grid-tied status
Green on Power limited status
Table 7-1 LED status descriptions
LED status Descriptions
LED status Descriptions
34 35
Red led blink slowly 1s/time Output side fault
Red led blink quickly 0.25s/time Input side fault
Red led on System internal fault
Red/Green/Blue light Burning code(Master/Slave)
alternately (1 color /0.25s) Control power set up (last1second)
Power
E-Today E-Total
Note: If you select a machine with a LCD screen, the warning code
will be displayed on the LCD screen. Non-lcd screen models need to
enter the app to view the corresponding warning code.
Control power abnormal C0
Arc fault C1
High DC component of output current C2
Inverter relay abnormal C3
Inverter over temperature C5
Leakage current HCT abnormal C6
Status Details Warning code
Software incompatibility CC
EEPROM error CD
Consistent warning CE
Inverter abnormal CF
Boost abnormal CG
Master Lost CH
Meter lost CJ
Fan abnormal C8
Remote off CN
Red
blink
slowly
Grid over voltage A0
Grid under voltage A1
Grid absent A2
Grid over frequency A3
Grid under frequency A4
Grid abnormal A6
Grid high average voltage A7
Grid N abnormal A8
PV over voltage B0
PV Insulation resistance abnormal B1
Leakage current abnormal B2
PV Strings reverse B7
PV under voltage B4
Red
blink
quickly
Red on
Red on
/
Status Details Warning code
System type error
DC link voltage unbalanced C9
DC link over voltage CA
Internal communication error CB
Warning Table
C7

8. Troubleshooting and Maintenance
WARNING
Before maintaining and commissioning inverter and its peripheral distribution unit,
switch off all the charged terminals of the inverter and wait at least 10 minutes after
the inverter is powered off, otherwise there will be a high voltage shock..
DANGER
Wrong maintenance will result in personnel injury or equipment damage!
Before performing any maintenance operations, you must follow these steps:
First, disconnect the AC circuit breaker on the grid side, and then disconnect
the DC switch.
Wait at least 10 minutes after the inverter is powered off, otherwise there will be a
high voltage shock.
Use testing equipment to make sure there no voltage or current.
8.1 Troubleshooting
NOTICE
Comply with ESD protection specifications and power distribution ESD bracelets.
Avoid unnecessary contact with the circuit board.
Touching printed circuit boards or other electrostatic sensitive components may
cause damage during the process.
If the inverter is break down, the LED indicator will turn to red.
Troubleshooting and Maintenance
Troubleshooting and Maintenance
36 37
Alarm Information Measures Recommended
A0-Grid over
voltage
1. If the alarm occurs accidentally, possibly the power grid is abnormal accidentally. No extra action is
needed.
2. If the alarm occurs repeatedly, contact the local power station. After receiving approval of the local
power bureau, revise the electrical protection parameter settings on the inverter through APP.
3. If the alarm persists for a long time, please confirm that:
1) The AC circuit breaker is not tripping frequently (generating an instantaneous high voltage);
2) The wiring of AC cable is followed by the guide in user manual, and high cable impedance can
cause a voltage rise on the grid;
3) The voltage of three-phase inverter between the neutral wire and the ground line exceeds 30V; and
please correct the grid wiring if it exceeds;
If the above problems are excluded, please contact customer service to report a repair.
A1-Grid under
voltage
1.If the alarm occurs accidentally, possibly the power grid is abnormal temporarily. No extra action is
needed.
2.If the alarm occurs repeatedly, contact the local power station. After receiving approval of the local
power bureau, revise the electrical protection parameter settings on the inverter through APP.
3.If the alarm persists for a long time, please confirm that:
1) The AC circuit breaker is disconnected;
2) The AC circuit breaker is damaged (under closed status, please check that the voltage of the inlet is
consistent with that of the outlet);
3) The AC terminals are in good contact.
If the actual measuring voltage is within the specified range, please contact customer service to report
a repair.
A2-Grid absent
1. If the alarm occurs accidentally, possibly the power grid is abnormal temporarily. No extra action is
needed.
2. If the alarm occurs repeatedly, contact the local power station. After receiving approval of the local
power bureau, revise the electrical protection parameter settings on the inverter through APP.
3. If the alarm persists for a long time, please confirm:
1) The AC circuit breaker is disconnected;
2) The AC circuit breaker is damaged (under closed status, please check that the voltage of the inlet is
consistent with that of the outlet);
3) The AC terminals are in good contact;
4) Whether the power supply line failure.
If exclude all possibilities, please contact customer service to report a repair.
A3-Grid over
frequency
1. If the alarm occurs accidentally, possibly the power grid is abnormal temporarily. No extra action is
needed.
2. If the alarm occurs repeatedly, contact the local power station. After receiving approval of the local
power bureau, revise the electrical protection parameter settings on the inverter through APP.
3. If the alarm persists for a long time, please contact customer service to report a repair.
A4-Grid under
frequency
1. If the alarm occurs accidentally, possibly the power grid is abnormal temporarily. No extra action is
needed.
2. If the alarm occurs repeatedly, contact the local power station. After receiving approval of the local
power bureau, revise the electrical protection parameter settings on the inverter through APP.
3. If the alarm persists for a long time, please contact the customer service.
A6-Grid abnormal
(Only for three-
phase inverter)
1. If the alarm occurs accidentally, possibly the power grid is abnormal temporarily. No extra action is
needed.
2. If the alarm occurs repeatedly, please:
1) Measuring three-phase voltages (L1-N, L2-N,L3-N) and check whether the imbalance is more than
30%. If yes, please contact energy company.
2) Measuring three-phase voltages at input and output sides of AC circuit breaker to check whether
breaker is damaged. If yes, please replace a new breaker.
3) Short circuit input and output ports of neutral wire on AC breaker, then check the alarm status. If it
returns normal, please replace a 3-pole breaker and keep neutral wire shorting. If not, please contact
customer service.
A7-Grid over mean
voltage
1. If the alarm occurs occasionally, the inverter can be automatically recovered. No extra action is
needed.
2. If the alarm occurs repeatedly, the inverter cannot work properly. Please contact customer service.
A8-Grid N
abnormal
1. If the alarm occurs occasionally, the inverter can be automatically recovered. No extra action is
needed.
2. If the alarm occurs repeatedly, the inverter cannot work properly. Please contact the customer
service center.
B0-PV over voltage Check whether the maximum input voltage of a single PV string exceeds the MPPT working voltage.
If yes, modify the number of PV module connection strings.
B1-PV insulation
abnormal
1. If the alarm occurs accidentally but the inverter can generate power, check whether the installation
environment of cables and the components are damp. Please improve the installation environment.
2. If the alarm occurs repeatedly and the inverter can generate electricity occasionally, check whether
the positive and negative polarity of the PV component are short-circuited to ground. And check if the
component is damaged or the connection cable is broken.
3. If the alarm continues and equipment cannot generate power, please contact customer service to
report a repair.
B2-Leakage current
abnormal
1. If the alarm occurs accidentally but the inverter can generate power, probably the power grid causes. The
inverter can be automatically recovered. No extra action is needed.
2. If the alarm occurs frequently and is accompanied by an insulation impedance alarm. Check for the
abnormal alarm of the insulation.
3. If the alarm continues and the equipment cannot generate electricity, please contact customer
reservice to export a repair.
B4-PV under
voltage
1. If occurs when the light is weak (such as the early morning or evening, rainy weather and dust
storms), the component voltage is lower than normal. No extra action is needed.
2. If not related to light intensity, please check whether the string has a short circuit or open circuit.
B7-PV string
reverse
Check and modify the positive and negative polarity of the input string.

8.2 Maintenance
Routine Maintenance of inverter
Check Item Check Content Maintain content Maintenance
Interval
Inverter output
status
Statistically maintain the status of
electrical yield, and remotely monitor
its abnormal status.
Inverter Check periodically and ensure that the
appearance heat sink is free from dust and blockage.
Clean periodically the
heat sink.
NA
Yearly
Inverter
running
status
a.Check that the inverter is not damaged
or deformed.
b.Check for normal sound emitted
during inverter operation.
c.Check and ensure that all inverter
communications is running well.
If there is any abnormal
phenomenon, replace the
relevant parts.
Inverter
Electrical
Connections
a.Check and ensure that AC, DC, and
communication cables are securely
connected;
b.Check and ensure that PGND cables
are securely connected;
c.Check and ensure that cables are
intact and free from aging;
If there is any abnormal
phenomenon, replace the
cable or re-connect it.
Monthly
Semiannually
Table 9-1.Maintenance checklist and interval
Fan Maintenance
When the external fan of the inverter can’t work normally, the inverter may not cool effectively. It may affect
the efficiency of the inverter or cause derating operation. Keep the fan clean and replace the damaged fan in
time.
Step1 Do the shutdown proceduce.
Step2 Refer to electrical connection installation and disconnect the inverter in the opposite steps.
Step3 Refer to mechanical installation and remove the inverter in the opposite steps.
Step4 Screw down two security screws anticlockwise which on the inverter fan bracket.
Troubleshooting and Maintenance
Troubleshooting and Maintenance
38 39
Information on how the inverter can comply with the earth fault alarm requirements of AS/NZS 5033.
Weekly
C0-Internal power
supply abnormal
1. If the alarm occurs occasionally, the inverter can be automatically recovered. No extra action is
needed.
2. If the alarm occurs repeatedly. Please contact customer service.
C1-Electric arc
abnormal If the alarm occurs, the inverter cannot work properly. Please contact customer service.
C2-Inverter over
dc-bias current
1. If the alarm occurs occasionally, the inverter can be automatically recovered. No action is required.
2. If the alarm occurs repeatedly, the inverter cannot work properly. Please contact customer service.
C3-Inverter relay
abnormal
1. If the alarm occurs occasionally, the inverter can be automatically recovered. No action is required.
2. If the alarm occurs repeatedly, for single-phase inverter, check whether the live line and neutral line
on the AC side is reversed. For three-phase inverter, check the voltage of the live line and neutral line
to the ground. If the grid side is normal, please contact customer service to report a repair.
C5-Inverter over
temperature
1. If the alarm occurs occasionally, the inverter can be automatically recovered. No action is required.
2. If the alarm occurs repeatedly, please check whether the installation site has direct sunlight, bad
ventilation, or high ambient temperature (such as installed on the parapet). Yet, if the ambient
temperature is lower than 45° C and the heat dissipation and ventilation is good, please contact
customer service.
C6-GFCI abnormal
1. If the alarm occurs occasionally, it could have been an occasional exception to the external wiring.
The inverter can be automatically recovered. No action is required.
2. If it occurs repeatedly or cannot be recovered for a long time, please contact customer service.
C7-System type
error
If the alarm occurs, and the inverter cannot work, please restart the inverter. If the alarm continues,
please contact customer service.
C9-Unbalance Dc-
link voltage
1. If the alarm occurs occasionally, the inverter can be automatically recovered. No action is required.
2. If the alarm occurs repeatedly, the inverter cannot work properly. Please contact customer service.
CA-Dc-link over
voltage
1. If the alarm occurs occasionally, the inverter can be automatically recovered. No action is required.
2. If the alarm occurs repeatedly, the inverter cannot work properly. Please contact customer service.
CB-Internal
communication
error
1. If the alarm occurs occasionally, the inverter can be automatically recovered. No action is required.
2. If the alarm occurs repeatedly, the inverter cannot work properly. Please contact customer service.
CC-Software
incompatibility
1. If the alarm occurs occasionally, the inverter can be automatically recovered. No action is required.
2. If the alarm occurs repeatedly, the inverter cannot work properly. Please contact customer service.
CD-Internal storage
error
1. If the alarm occurs occasionally, the inverter can be automatically recovered. No action is required.
2. If the alarm occurs repeatedly, the inverter cannot work properly. Please contact customer service.
CE-Data
inconsistency
1. If the alarm occurs occasionally, the inverter can be automatically recovered. No action is required.
2. If the alarm occurs repeatedly, the inverter cannot work properly. Please contact customer service.
CF-Inverter
abnormal
1. If the alarm occurs occasionally, the inverter can be automatically recovered. No action is required.
2. If the alarm occurs repeatedly, the inverter cannot work properly. Please contact customer service.
CG-Boost
abnormal
1. If the alarm occurs occasionally, the inverter can be automatically recovered. No action is required.
2. If the alarm occurs repeatedly, the inverter cannot work properly. Please contact customer service.
CH-Data logger lost1. If the alarm occurs occasionally, the inverter can be automatically recovered. No action is required.
2. If the alarm occurs repeatedly, the inverter cannot work properly. Please contact customer service.
CJ-Meter lost
If the alarm occurs, please check the RS485 connection. If it is abnormal, please revise the connection;
if it is normal, please contact customer service.
C8-Fan abnormal
1. If the alarm occurs occasionally, please restart the inverter.
2. If it occurs repeatedly or cannot be recovered for a long time, check whether the external fan is
blocked by other objects. Otherwise, please contact customer service.