Abrelex EnerSolis ES 12000 User manual

VERSION 1.1
Grid Tie Solar Inverter
EnerSolis Series
ES 6000
ES 8000
ES 10000
ES 12000
Three-Phase , 6 / 8 / 10 /12 kW
User’s Manual
1
Contents
1 Foreword...........................................................................................................2
2 IMPORTANT SAFETY INSTRUCTIONS..........................................................3
3 Overview...........................................................................................................6
3.1 External dimensions...........................................................................6
3.2 External features ................................................................................7
4 Installation.........................................................................................................8
4.1 Unpacking ..........................................................................................8
4.2 Installation requirements....................................................................9
4.3 Mounting the unit..............................................................................11
4.4 Electrical installation.........................................................................14
5 Front display panel .........................................................................................21
6 Starting the inverter ........................................................................................23
6.1 Start-up and operation test...............................................................23
6.2 Checking values measured by the inverter......................................25
6.3 Inverter status indicators..................................................................29
7 Communication interfaces..............................................................................30
7.1 Standard communication interfaces.................................................30
7.2 Optional communication card...........................................................32
8 Remotely Communication ..............................................................................37
9 Inverter status diagnostics and repair.............................................................38
10 Specifications..................................................................................................41
11 Contact ...........................................................................................................43

2
1 Foreword
Thank you for purchasing the EnerSolis ES 6000(ES 8000/ES
10000/ES 12000) Grid Tie Solar Inverter. Many years of experience
in the design of power devices have gone into the construction of
this device. We hope that it will give your solar power system many
years of trouble-free operation. However, the inverter is a complex
electronic system which is confronted with a wide variety of local
conditions, so if questions arise or a malfunction occurs do not
hesitate to call your specialized dealer for assistance.
Please read this user's guide carefully to familiarize yourself with the
device, paying special attention to the information on installing and
commissioning the device.
3
2 IMPORTANT SAFETY INSTRUCTIONS
■General
This manual contains important instructions for the ES
6000(ES 8000/ES 10000/ES 12000) that must be followed
during installation and maintenance of the inverter.
■Housing
Only qualified installers are authorized to open the
connection area. Do not open the connection area when
the inverter is connected to power.
 Only well-trained service staff may open the upper
portion (power stage) of the inverter, and only when it is
not connected to power.
Warning! Incorrect operation and work performed
incorrectly can cause damage and serious injury! Only
qualified staff are authorized to install your inverter, and
only within the scope of the respective technical
regulations. Do not start operation or carry out
maintenance work before you have read the chapter
“Safety Regulations“!
Warning! These servicing instructions are for use by
qualified personnel only. To reduce the risk of electric
shock, do not perform any servicing other than that
specified in the operating instructions unless you are
qualified to do so.

4
■Warning
Below warning symbols are described according to related
sections:
Symbol Description
Caution, risk of electric shock !
Caution, risk of danger !
Caution , hot surface !
The PV inverter surface temperature
of the casing can exceed +70 °C .
Caution, risk of electric shock
Energy storage timed discharge !
Refer to the operating instructions !
5
■Repair
Only well-trained service staff are authorized to carry out
repairs to the inverter.
■Solar panels
Before connecting the solar panels (also called photovoltaic
(PV) modules), you must check whether the voltage parameters
specified in the manufacturer’s data correspond with the actual
parameters. When checking the voltage please take into
account that solar modules supply a higher no-load voltage
when temperature is low and sunlight level remains unchanged.
At 4 °F ( -20 °C) the open-circuit voltage of the PV modules
must never exceed 1,000 V. The data sheet of the solar module
will include the temperature factors applicable for ascertaining
the theoretical open-circuit voltage at 4 °F ( -20 °C) . If the
solar modules exceed an open-circuit voltage of 1,000 V the PV
inverter might be damaged, which will void the warranty.
The PV inverter includes a residual current monitoring unit
(RCMU) according to VDE0126-1-1. This device measures the
ground current of the PV array and prevents the inverter from
feeding the grid in case of a ground fault.
■Grid connection
Only appropriately licensed contractors are authorized to
connect the PV inverter to the grid. Consult your local
authorities for specific requirements. Before connecting the PV
inverter to the grid, permission for the connection must be
granted by the utility company.

6
3 Overview
3.1
3.13.1
3.1 External dimensions
Model
number
Dimensions (mm)
ES 6000 ES 8000 ES 10000 ES 12000
W 451 451 451 451
H 595 595 595 595
D 247 247 247 247
7
3.2
3.23.2
3.2 External features
1. LCD and LED display: Shows operation information and status.
2. Solar array input: plug-and-play connectors for the solar modules
3. Standard communication ports: EPO, RS-232, and RS-485
4. Optional communication slot: USB, RS-485, Dry-Contact, TCP/IP, or WiFi。
5. AC output terminal: AC output for the utility supply
6. DC input switch: switches the PV string inputs on and off

8
4 Installation
Warning: Be sure to read the safety instructions on pages 3 and 4 before
installing the PV inverter.
4.1
4.14.1
4.1 Unpacking
Inspect the PV inverter upon receipt. The packaging is robust, but accidents and
damage may still occur during shipment. Notify the forwarder and dealer if there is
damage.
The packaging is recyclable and reusable.
After removing the inverter from the carton check for the following standard
package contents, in addition to the inverter itself.
 accessories set (cover, PV connector)
 CD-ROM
A wall mount kit set (backrest and backplane positioning paper)
9
4.2
4.24.2
4.2 Installation requirements
The PV inverter is heavy. Take this weight into account
when choosing the installation site and method of
installation.
To ensure proper operation and long operating life,
position the inverter according to the following
requirements:
(1) ES 6000(ES 8000/ES 10000/ES
12000) are designed to comply with
Index of Protection class 65, which
allows units to be installed in outdoor
and wet environment . The PV
inverter is designed for outdoor
installation. It should be installed in a
place here it is not exposed to direct
sunlight. The yield of the PV system
may be reduced at increased
ambient temperatures or when installed in poorly ventilated and warm indoor
locations. We recommend an ambient temperature range of -20°C to +60 °C
.

10
(2) The PV inverter is designed to be mounted on a vertical wall. If installing the
unit outdoors make sure that it is not slanting forward.
We advise against installing the unit in a horizontal position outdoors.
(3) When choosing the installation site ensure that there is enough space for
heat dissipation. Under normal conditions the following clearance guidelines
should be applied:
11
4.3
4.34.3
4.3 Mounting the unit
For vertical installation and installation on solid concrete or block walls, when
selecting the mounting hardware be sure to take into account the weight of the PV
inverter.
The procedure for mounting the inverter is described on the following page.

12
4.3.1
4.3.14.3.1
4.3.1 Using the mounting bracket
Method I: Use the backplane to fix the unit
Step 1. Put the backplane position paper on the intended spot of the wall.
Drill holes based on the diameter of the backplane to fix holes. Finally
, fix the backplane on the wall.
Step 2. Screw the nut on the sleeve without fastening.
Step 3. Hang the PV inverter on the backplane. Make sure that it holds the
inverter unit firm and securelyFinally, fastening the nut.
13
Method II: Use screws to fix the unit
Step 1. Mark the positions to drill the holes and setting screw.
Step 2. Hang the PV inverter on the wall that it cannot be moved sideways.
Step 3. Make sure that the PV inverter is positioned securely on the bracket.

14
4.4
4.44.4
4.4 Electrical installation
Caution ! Risk of electric shock !
■ Make sure the AC breaker or switch installed between the
PV Inverter and the grid (AC Utility).
Note：Please use Ue: 690Vac / Ie:25A circuit breaker.
■ Make sure the DC breaker or switch installed between the
PV Inverter and the PV array.
Note：Please use Ue: 1000Vdc / Ie:25A circuit breaker.
■ When working on the PV inverter, disconnect the AC breaker or
switch and DC breaker or switch.
■ Make sure that the AC breaker or switch and DC breaker or
switch cannot be unintentionally closed during installation and
commissioning works.
The electrical connections for the PV inverter are shown in Figure 1.
Figure 1
15
4.4.1
4.4.14.4.1
4.4.1 Connecting to the grid (AC utility)
Caution:
Before connecting to Grid(AC utility),please install a separate
circuit breaker between inverter and Grid
To connect the AC power cable proceed as follows:
Step 1. Measure the grid’s (i.e., the utility’s) voltage and frequency. The voltage
and frequency of the inverter are set at the factory to match the utility in
the country where the product will be delivered.
Step 2 .Before wiring the PV inverter ensure that the main breaker in the primary
utility breaker box is switched OFF. Switch this breaker ON only after all
wiring is completed as instructed below.
Step 3 .Remove the screws that secure the wire terminal cover, and carefully
remove the cover. Alternatively, remove the connector as shown in
Figure 2.
Figure 2

16
Step 4. Insert the utility cable through the cable gland. Connect the wires to the
terminal block as shown in Figure 3.
Figure 3
Step 5. Reattach the cover, and evenly tighten the four screws.
Warning: To prevent risk off electric shock ensure that the ground
(PE) wire is properly earthed before operating the PV
inverter.
Suggested AC cable width
Model Area (mm
2
) AWG no.
ES 6000 > 2.1 < 14
ES 8000 > 2.1 < 14
ES 10000 > 3.5 < 12
ES 12000 >3.5 <12
17
4.4.2
4.4.24.4.2
4.4.2 Status identification of the DC input switch
Before operating the DC input switch, make sure of status identification as below
instructions .
Turn the DC switch 90°to the on position (position I ) shown in Figure 4
Turn the DC switch 180°to the off position (position 0 ). shown in Figure 5
Figure 4 Figure 5

18
4.4.3
4.4.34.4.3
4.4.3 Connecting the PV array (DC)
4.4.3.1
4.4.3.14.4.3.1
4.4.3.1 PV array requirements
The ES 6000(ES 8000/ES 10000/ES 12000) PV inverter is designed to be
connected to an array of up to two PV strings. The two PV strings can contain
different numbers of PV modules.
4.4.3.2
4.4.3.24.4.3.2
4.4.3.2 Wiring to the PV array
The PV inverter is equipped with PV quick connects for connecting up to two PV
strings as shown in Figure 6.
Caution:
Before connecting to PV modules, please install a separate
circuit breaker between PV inverter and PV modules.
Figure 6
19
When matching PV strings to the PV inverter, to determine the number of panels
required in each PV string (panels connected in series), you must ensure that the
following three requirements are met:
1. To avoid damage to the inverter make sure that the maximum open circuit
voltage (Voc) of each PV string is less than 1,000 VDC under any conditions.
Voltage over 1,000 VDC will damage the inverter.
2. Do not exceed the maximum array short-circuit current rating marked on the
inverter.
3. To harvest maximum energy from your array ensure that the Vmp (voltage at
maximum power) does not drop below 450 VDC or increase above 850 VDC
under most conditions.
To wire the PV array to the PV inverter follow these steps:
Step 1: Set the DC input switch to 0
( Turn the DC input switch to off position,referring to section 4.4.2 Figure 5)
Step 2: Check that the PV generator connectors have the right polarity and do not
exceed the maximum string voltage.
Step 3: Connect the POSITIVE (+) wire from the #1 PV string to the PV inverter’s
positive (+) terminal.
Step 4: Connect the NEGATIVE (–) wire from the #1 PV string to the PV inverter’s
negative (–) terminal.
Step 5: Connect the ground wire from the #1 PV string to earth.
Step 6: If necessary repeat steps 2 through 5 for the #2 PV string. Double-check
that the wires are in the proper locations.
Suggested DC cable width
Model Area (mm
2
) AWG no.
ES 6000 > 4.0 < 12
ES 8000 > 4.0 < 12
ES 10000 > 4.0 < 12
ES 12000 > 4.0 < 12

20
4.4.3.3
4.4.3.34.4.3.3
4.4.3.3 Requirements for connection
Figure 7. DC connections for a two-string PV array
The number of solar panels in String A
need not equal the number in String B.
For a single PV string enter settings mode
and configure for parallel operation.
21
5 Front display panel
Symbols on the LCD
○
1 LCD
Symbol Description
Utility source
Inverter is working in specified mode.
Solar cell
Inverter operation mode flow chart
4-digit measurement display

22
LED Indicators
○
2
Red LED shines steadily to indicate a g
round fault or DC input
isolation fault.
○
3
Yellow LED shines steadily to indicate that the utility does
not match
the input standard of the inverter (voltage, frequency, etc.).
○
4
Green LED shines steadily when the s
olar power is greater than sleep
power. It flashes when the solar power is less than sleep power.
Control Keys
○
5
Special functions and log in/out
○
6
Go to next page.
○
7
Confirm change of inverter setting.
○
8
Go to previous page.
23
A
B1
B2
6 Starting the inverter
Before the inverter is started ensure the following:
The wire terminal cover is securely screwed on.
The AC breaker is OFF.
The DC cables (PV strings) are fully connected.
The AC (utility) cable is connected correctly.
6.1
6.16.1
6.1 Start-up and operation test
6.1.1
6.1.16.1.1
6.1.1 Connect the PV string voltage by switching on the DC switch,
referring to section 4.4.2. Figure 4. The inverter starts
automatically when it senses DC voltage greater than 250
VDC. All of the LEDs will shine. The LCD will display
drawing A.
6.1.2
6.1.26.1.2
6.1.2 After three seconds the LCD will change from drawing Ato
drawings B1 and B2. The green LED will flash to indicate
that the DC input power is less than sleep power. The yellow
LED will shine steadily to indicate the absence of utility
power.

24
D
C
E
6.1.3
6.1.36.1.3
6.1.3 Turn on the AC breaker. If the utility specification (voltage,
frequency, etc.) matches the inverter, after thirty seconds the
LCD will display drawing C, and the yellow LED will stop
shining, indicating that the utility is acceptable to the inverter.
If the utility does not match the inverter then an error code or
error status will appear on the screen.
6.1.4
6.1.46.1.4
6.1.4 After five seconds, if the inverter’s DC soft start is successful,
the LCD will display drawing D. The green LED will still
flash.
6.1.5
6.1.56.1.5
6.1.5 After ten seconds, if the inverter’s AC soft start is successful,
the LCD will display drawing E.
25
F
6.1.6
6.1.66.1.6
6.1.6 If the inverter encounters a problem (e.g. output current over
range) then an error code or error status will appear on the
screen. (e.g. drawing F)
6.1.7
6.1.76.1.7
6.1.7 Upon successful completion of the start-up operation the
LCD will display drawing E.
6.2
6.26.2
6.2 Checking values measured by the inverter
To check values measured by the inverter use the scroll-up
and scroll-down keys. When you scroll down, the LCD will
display the following:
6.2.1
6.2.16.2.1
6.2.1 Input DC voltage of stringA
6.2.2
6.2.26.2.2
6.2.2 Input DC voltage of string B
H
G

26
6.2.3
6.2.36.2.3
6.2.3 Input DC current of string A
6.2.4
6.2.46.2.4
6.2.4 Input DC current of string B
6.2.5
6.2.56.2.5
6.2.5 Output power of booster A
6.2.6
6.2.66.2.6
6.2.6 Output power of booster B
6.2.7
6.2.76.2.7
6.2.7 Output voltage Aof the inverter (utility voltage)
I
J
K
L
M
27
6.2.8
6.2.86.2.8
6.2.8 Output voltage B of the inverter (utility voltage)
6.2.9
6.2.96.2.9
6.2.9 Output voltage C of the inverter (utility voltage)
6.2.10
6.2.106.2.10
6.2.10 Output frequency of the inverter (utility frequency)
6.2.11
6.2.116.2.11
6.2.11 Output current A supplied to the load
6.2.12
6.2.126.2.12
6.2.12 Output current B supplied to the load
N
P
Q
R
O

28
6.2.13
6.2.136.2.13
6.2.13 Output current C supplied to the load
6.2.14
6.2.146.2.14
6.2.14 Output power supplied to the load
6.2.15
6.2.156.2.15
6.2.15 Energy in kWh supplied to the load
6.2.16
6.2.166.2.16
6.2.16 Inverter inner temperature (in either °F or °C) (°F
or °C display change from scroll up and scroll down)
6.2.17
6.2.176.2.17
6.2.17 Heat sink temperature (in either °F or °C) (°F
or °C display change from scroll up and scroll down)
S
T
U
V
W
29
6.3
6.36.3
6.3 Inverter status indicators
The PV inverter starts up automatically when DC power from the PV array is
greater than 250 VDC. Once the PV inverter starts, it enters into one of the
following modes:
Operation
mode LCD Description
Normal
The PV inverter is working normally.
Whenever the PV-array voltage is
within range (300-1,000 VDC), the PV
inverter passes power to the grid as
generated by the PV array. In normal
mode the green LED shines to
indicate that the inverter is feeding
power to the grid.
Standby
If the voltage is insufficient (250-300
VDC) the PV inverter enters into
standby mode.
Error
The internal intelligent controller
continuously monitors and adjusts the
system status. If the PV inverter
encounters unexpected conditions
such as grid problems or internal
failure, it will display relevant
information on the LCD, and the red
LED will shine.
EPO
Emergency Power Off mode.
In this
mode the PV inverter
does not take
any power from the grid.
Shutdown
In case of little or no sunlight the PV
inverter automatically stops running.
In this mode the PV inverter does not
take any power from the grid. The
LCD and all of the LEDs on the front
panel do not work.

30
7 Communication interfaces
7.1
7.17.1
7.1 Standard communication interfaces
7.1.1
7.1.17.1.1
7.1.1 RS-232 interface definition
The RS-232 interface must be configured as follows:
Baud Rate
9600 bps
Data Length
8 bits
Sto
p Bit
1
Parity
None
RS-232 Pin assignments are as follows (The connector is male.)
7.1.2
7.1.27.1.2
7.1.2 RS-485 interface definition
The RS-485 interface must be configured as follows:
Baud
Rate
9600 bps
Data Length
8 bits
Stop Bit
1
Parity
None
Pin 2: RS-232 Rx
Pin 3: RS-232 Tx
Pin 5: Ground
1
2
3
4
5
6
7
8
9
31
RS-485 pin assignments are as follows:
PIN 3 = 485 GND
PIN 4 = EPO GND
PIN 5 = EPO
PIN 7 = 485 A/Data+
PIN 8 = 485 B/Data-
7.1.3
7.1.37.1.3
7.1.3 EPO (Emergency Power Off) RJ45 connector
To activate EPO pin 4 and pin 5 must be shorted.
Make sure the RJ45 plug is properly
attached to the wire.
Ensure that the EPO function operates
properly with your application by testing the
inverter while it is injecting current. Check
that the inverter stops injecting current.

32
7.2
7.27.2
7.2 Optional communication card
7.2.1
7.2.17.2.1
7.2.1 Hardware installation procedure
Caution ! Risk of electric shock !
■When working on the solar power system, disconnect the AC
breaker or switch.
■Turn the DC input switch to off position, referring to section 4.4.2.
Figure 5
■Make sure that the AC breaker or switch cannot be unintentionally
closed during installation and commissioning works.
Unscrew the two screws,
and remove the cover.
Insert the communication
card into the slot.
33
7.2.2
7.2.27.2.2
7.2.2 RS-485 card
Jumper block CN2 is for the terminal resistor function.
Short pins 1 and 2 to enable the function.
Short pins 2 and 3 to disable it.
Jack CN3 is the RS-485 terminal.
Definition:
1
2
3
CN2 1 Ground
2 A/Data+
3 B/Data−
Screw on the cover to
complete the installation.

34
7.2.3
7.2.37.2.3
7.2.3 USB card
7.2.3.1
7.2.3.17.2.3.1
7.2.3.1 Jack CN2 is for USB.
7.2.3.2
7.2.3.27.2.3.2
7.2.3.2 Definition:
7.2.3.3
7.2.3.37.2.3.3
7.2.3.3 Complies with USB version 1.0 and 1.5 Mbps.
7.2.3.4
7.2.3.47.2.3.4
7.2.3.4 Complies with USB HID Version 1.0.
7.2.3.5
7.2.3.57.2.3.5
7.2.3.5 Pin assignments:
1 VCC (+5 V)
2 D－
3 D＋
4

Ground
35
7.2.4
7.2.47.2.4
7.2.4 True Relay Contact Board (DCE-B card)
7.2.4.1
7.2.4.17.2.4.1
7.2.4.1 Pin assignments of the 10-pin terminal:
1
2
3
4
5
6
7
8
Pin 1: Utility voltage is abnormal.
Pin 2: PV array voltage is normal.
Pin 3: PV array voltage is abnormal.
Pin 4: Utility frequency is abnormal.
Pin 5: Anti-islanding
Pin 6: Inverter output current exceeds range.
Pin 7: Heat-sink temperature is too high.
Pin 8: Common
7.2.4.2
7.2.4.27.2.4.2
7.2.4.2 The capacity of each relay contact is 40 VDC/25 mA
.
7.2.4.3
7.2.4.37.2.4.3
7.2.4.3 Flexible signal output for N.C. (normally closed) or N.O.
(normally open) contact by shorting pins 1-2 or pins 2-3 on
jumper block JP1-5

36
7.2.5
7.2.57.2.5
7.2.5 TCP/IP Cards
7.2.5.1
7.2.5.17.2.5.1
7.2.5.1 TCP/IP (Ethernet) card
7.2.5.2
7.2.5.27.2.5.2
7.2.5.2 For installation please refer to the user’s manual included
with the card.
7.2.6
7.2.67.2.6
7.2.6 WiFi Cards
7.2.6.1
7.2.6.17.2.6.1
7.2.6.1 For installation please refer to the user’s manual included
with the card.
37
8 Remotely Communication
8.1
8.18.1
8.1 Grid PV-Inverter is equipped with power remotely
communication interface and options. User can use
software to monitor the status of inverter with PC with the
following options.
8.1.1
8.1.18.1.1
8.1.1 RS485: To use it, you have to remove the RS485
cover on bottom side of Inverter. It is a DB8
socket. For the pin definition, please refer
to 7.1.2.
8.1.2
8.1.28.1.2
8.1.2 Wired Ethernet: To install TCP/IP card, please refer
to 7.2.5.
8.1.3
8.1.38.1.3
8.1.3 Wireless Ethernet: To install WiFi card, please refer
to 7.2.6.

38
9 Inverter status diagnostics and repair
The PV Inverter is equipped with a self diagnostic system that automatically
identifies many possible operational issues and displays information about them
on the LCD. Therefore it is possible to quickly isolate technical problems and to
distinguish between service codes related to the installation and service codes
which are internal to the inverter. Whenever the diagnostic system identifies a
particular issue the respective service code is displayed on the LCD.
Table 2. Inverter error codes and descriptions
LCD
Designation Description Repair
Er00
DC_BUS
pre-charge failure
The inverter is in the soft start
procedure, but the DC bus cannot
reach and maintain anticipative
charging voltage
1. Disconnect ALL PV (+) and
PV (-) cables.
2. Wait for a few seconds.
3. After the LCD switches off
reconnect and check again.
4. If the error code keeps
recurring contact your local
distributor.
Er07
DC_BUS
over-voltage The DC bus voltage is lower or
higher than expected.
Er08
DC_BUS
under-voltage
Er17
EEPROM ERROR
on the control
board EEPROM data is wrong.
Er22
Output relay failure
The inverter’s output relay is
abnormal.
Er24
Output current
sense failure The inverter’s output current fails to be detected.
Er25
BOOSTER_A
over-current Over-current on the DC side. This
fault code is displayed if the current
in the DC network is larger than
specified.
Er26
BOOSTER_B
over-current
Er06
EPO Inverter enters into EPO mode
(Emergency Power Off).
1. Remove the short circuit
occurring at the EPO terminal.
2. If the error code keeps
recurring contact your local
distributor.
Er09
Inverter output
over-current
Over-current on the AC side. This
fault code is displayed if the current
in theAC network is larger than
specified. 1. Turn off the AC breaker, then
check the peripheral AC
system configuration and the
grid conditions.
2. If the error code keeps
recurring contact your local
distributor for help.
Er11
Inverter overload Overload on the AC side. This fault code is displayed if the load in the
AC network is larger than specified.
Er13
Inverter short
circuit Short circuit on the AC side
Er14
Inverter PLL failure
The phase of the inverter cannot
synchronize with the utility.
Er29
Inverter output DC
current over spec.
The DC component of the electricity
fed into the grid is larger than the
permissible range.
Er10
Inverter Over
temperature The internal temperature is too high.
1. Try to reduce the ambient
temperature.
2. Move the inverter to a cooler
39
Er18
Heat sink over
temperature The heat sink temperature is too high.
place.
3. If the error code keeps
recurring contact your local
distributor for help.
Er02
Slave MCU failure Slave MCU failure
1. If the error code keeps
recurring contact your local
distributor for help.
Er05
Watch Dog DSP Watch Dog
Er12
Charger fault DC BUS pre-charge failure
Er15
Slave Info fail The data check failed between two
MCUs.
Er27
Booster Short
Circuit Short-current on the DC side.
Er41
Boost A Sense fault
Current sensor fault on the stringA
of DC side.
Er42
Boost B Sense
fault Current sensor fault on the stringB of DC side.
Er43
Out Balance Sense
fault Current sensor fault on the AC side.
Er37
Fan fault A fan is not rotating.
1. Check the fans.
2. If the error code keeps
recurring contact your local
distributor for help.