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User Manual
4KVA/ 5KVA
INVERTER / CHARGER
CONTENTS
ABOUT THIS MANUAL
Purpose
This manual describes the assembly, installation, operation and troubleshooting of this unit. Please read this manual carefully before installations and operations. Keep this manual for future reference.
Scope
This manual provides safety and installation guidelines as well as information on tools and wiring.
SAFETY INSTRUCTIONS
WARNING: This chapter contains important safety and operating instructions. Read and keep this manual for future reference.
1. Before using the unit, read all instructions and cautionary markings on the unit, the batteries and all appropriate sections of this manual.
2. CAUTION --To reduce risk of injury, charge only deep-cycle lead acid type rechargeable batteries.
Other types of batteries may burst, causing personal injury and damage.
3. Do not disassemble the unit. Take it to a qualified service center when service or repair is required.
Incorrect re-assembly may result in a risk of electric shock or fire.
4. To reduce risk of electric shock, disconnect all wirings before attempting any maintenance or cleaning.
Turning off the unit will not reduce this risk.
5. CAUTION – Only qualified personnel can install this device with battery.
6. NEVER charge a frozen battery.
7. For optimum operation of this inverter/charger, please follow required spec to select appropriate cable size. It’s very important to correctly operate this inverter/charger.
8. Be very cautious when working with metal tools on or around batteries. A potential risk exists to drop a tool to spark or short circuit batteries or other electrical parts and could cause an explosion.
9. Please strictly follow installation procedure when you want to disconnect AC or DC terminals. Please refer to INSTALLATION section of this manual for the details.
10. Fuses (4 pieces of 30A, 150VDC for 4KVA and 5pcs of that for 5KVA) are provided as over-current protection for the battery supply.
11. GROUNDING INSTRUCTIONS -This inverter/charger should be connected to a permanent grounded wiring system. Be sure to comply with local requirements and regulation to install this inverter.
12. NEVER cause AC output and DC input short circuited. Do NOT connect to the mains when DC input short circuits.
13. Warning!! Only qualified service persons are able to service this device. If errors still persist after following troubleshooting table, please send this inverter/charger back to local dealer or service center for maintenance.
1
INTRODUCTION
This is a multi-function inverter/charger, combining functions of inverter, solar charger and battery charger to offer uninterruptible power support with portable size. Its comprehensive LCD display offers user-configurable and easy-accessible button operation such as battery charging current, AC/solar charger priority, and acceptable input voltage based on different applications.
Features
Pure sine wave inverter
Configurable input voltage range for home appliances and personal computers via LCD setting
Configurable battery charging current based on applications via LCD setting
Configurable AC/Solar Charger priority via LCD setting
Compatible to mains voltage or generator power
Auto restart while AC is recovering
Overload/ Over temperature/ short circuit protection
Smart battery charger design for optimized battery performance
Cold start function
Basic System Architecture
The following illustration shows basic application for this inverter/charger. It also includes following devices to have a complete running system:
Generator or Utility.
PV modules (option)
Consult with your system integrator for other possible system architectures depending on your requirements.
This inverter can power all kinds of appliances in home or office environment, including motor-type appliances such as tube light, fan, refrigerator and air conditioner.
Figure 1 Hybrid Power System
2
Note: Appliances such as air conditioner are required at least 2~3 minutes to restart because it’s required to have enough time to balance refrigerant gas inside of circuits. If a power shortage occurs and recovers in a short time, it will cause damage to your connected appliances. To prevent this kind of damage, please check manufacturer of air conditioner if it’s equipped with time-delay function before installation. Otherwise, this inverter/charger will trig overload fault and cut off output to protect your appliance but sometimes it still causes internal damage to the air conditioner.
Product Overview
1. LCD display
2. Status indicator
3. Charging indicator
4. Fault indicator
5. Function buttons
6. Power on/off switch
7. AC input
8. AC output
9. PV input
10. Battery input
11. Circuit breaker
12. RS-232 communication port
3
Operation Diagrams and Working Conditions
Abbreviation:
I
UC
, charging current from AC charger
I
SC
, charger current from solar charger
I
CHG
, total charging current of battery
I
DISC
, discharging current from battery
I
LOAD
, output current of AC load
1) BAT AC OUTPUT
Utility Source
Solar Source Solar Charger
Isc I
DISC
DC/AC Inverter
I
LOAD
AC Load
Battery Bank
The load is powered by battery power and solar power. Solar charger works when solar power is OK. The maximum I
SC
will go up to 50Amp. Then, the status of solar power and connected load will determine if battery is charge or discharge.
2) SOLAR CHARGE WITHOUT OUTPUT
Utility Source
Solar Source Solar Charger
Isc
DC/AC Inverter AC Load
Battery Bank
Solar charges the battery. The Max. I
SC
goes up to 50Amp if solar panel with enough energy. No load is powered at this state.
3) SOLAR CHARGE WITH OUTPUT
Utility Source
Solar Source Solar Charger
Isc
DC/AC Inverter
I
LOAD
AC Load
Battery Bank
The load is powered by the utility. Solar power charges the battery. The maximum I
SC
will go up to 50Amp if enough energy is generated by solar modules.
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4) AC CHARGE
Utility Source
Solar Source Solar Charger
Iuc
DC/AC Inverter
I
LOAD
AC Load
Battery Bank
The battery is charged by the utility. The maximum I
UC
is 30Amp. The solar charger doesn’t work. When the power ON/OFF switch is turned “ON”, the device will generate output to the load. When the power ON/OFF switch is turned “OFF”, the device won’t generate output to the load.
5) AC & SOLAR CHARGE
Utility Source
Solar Source Solar Charger
Isc Iuc
DC/AC Inverter
I
LOAD
AC Load
Battery Bank
The battery is charged by the utility and solar power at the same time. I
CHG
= I
UC
+ I
SC
and the maximum I
CHG is 50Amp. When the power ON/OFF switch is turned “ON’, the device will generate output to the load. If the power ON/OFF switch is turned “OFF”, the device won’t generate output to the load.
6) NO CHARGE
Utility Source
Solar Source Solar Charger DC/AC Inverter
I
LOAD
AC Load
Battery Bank
When the power ON/OFF switch is turned “ON”, the device will generate output to the load. If the power
ON/OFF switch is turned “OFF”, the device won’t generate output to the load. There is no charging current to the battery.
5
INSTALLATION
Unpacking and Inspection
Before installation, please inspect the unit. Be sure that nothing inside the package is damaged. You should have received the following items inside of package:
The unit x 1
User manual x 1
Communication cable x 1
Preparation
Before connecting all wirings, please take off bottom cover by removing two screws as shown below.
Mounting the Unit
Consider the following points before selecting where to install:
Do not mount the inverter on flammable construction materials.
Mount on a solid surface
Install this inverter at eye level in order to allow the LCD display to be read at all times.
For proper air circulation to dissipate heat, allow a clearance of approx. 10 cm to the side and approx. 50 cm above and below the unit.
The ambient temperature should be between 0°C and 55°C to ensure optimal operation.
The recommended installation position is to be adhered to the wall vertically.
Be sure keep other objects and surfaces as shown in the below diagram to guarantee sufficient heat dissipation and to have enough space for removing wires.
SUITABLE FOR MOUNTING ON CONCRETE OR OTHER NON-COMBUSTIBLE SURFACE ONLY.
6
Install the unit by screwing three screws.
Battery Connection
CAUTION: To safety operation and regulation compliance, it’s requested to install a separate DC over-current protector or disconnect device between battery and inverter. It may not be requested to have a disconnect device in some applications, however, it’s still requested to have over-current protection installed. Please refer to typical amperage in below table as required fuse or beaker size.
WARNING! All wiring must be performed by a qualified personnel.
WARNING! It's very important for system safety and efficient operation to use appropriate cable for battery connection. To reduce risk of injury, please use the proper recommended cable and terminal size as below.
Recommended battery cable and terminal size:
Model
Typical
Amperage
Battery capacity
1~3 m one-way
Ring Type for Cable
Terminal
Torque value
4KVA 67A 200AH
1*4AWG
2*8AWG
KST: RNBS22-6
KST: RNBS14-6
2~ 3 Nm
1*4AWG KST: RNBS22-6
5KVA 84A 200AH 2~ 3 Nm
2*8AWG KST: RNBS14-6
Please follow below steps to implement battery connection:
1. Assemble battery ring terminal based on recommended battery cable and terminal size.
2. This model supports 48VDC system. It’s suggested to connect at least 200Ah capacity battery.
NOTE: Please only use sealed lead acid battery or sealed GEL/AGM lead-acid battery.
3. Insert the ring terminal of battery cable flatly into battery connector on the inverter and make sure the bolts are tightened to a torque of 2-3 Nm. Make sure polarity at both the battery and the inverter/charge is correctly connected and ring terminals are tightly screwed to the battery terminals.
7
WARNING: Shock Hazard
Installation must be performed with care due to high battery voltage in series.
CAUTION!! Do not place anything between the flat part of the inverter terminal and the ring terminal. Otherwise, overheating may occur.
CAUTION!! Do not apply anti-oxidant substance on the terminals before terminals are connected tightly.
CAUTION!! Before making the final DC connection or closing DC breaker/disconnector, be sure positive (+) must be connected to positive (+) and negative (-) must be connected to negative
(-).
AC Input/Output Connection
CAUTION!! Before connecting to AC input power source, please install a separate AC breaker between inverter and AC input power source. This will ensure the inverter can be securely disconnected during maintenance and fully protected from over current of AC input. The recommended spec of AC breaker is 40A for 4KVA and 50A for 5KVA.
CAUTION!! There are two terminal blocks with “IN” and “OUT” markings. Please do NOT mis-connect input and output connectors.
WARNING! All wiring must be performed by a qualified personnel.
WARNING! It's very important for system safety and efficient operation to use appropriate cable for AC input connection. To reduce risk of injury, please use the proper recommended cable size as below.
Suggested cable requirement for AC wires
Model AWG no. Torque
4KVA
5KVA
10 AWG
8 AWG
1.4~1.6Nm
1.4~1.6Nm
Please follow below steps to implement AC input/output connection:
1. Before making AC input/output connection, be sure to open DC protector or disconnector first.
2. Remove insulation sleeve 10mm for six conductors. And shorten phase L and neutral conductor N 3 mm.
3. Insert AC input wires according to polarities indicated on terminal block and tighten the terminal screws. Be sure to connect PE protective conductor ( ) first.
L→LINE (brown or black)
→Ground (yellow-green)
N→Neutral (blue)
8
WARNING:
Be sure that AC power source is disconnected before attempting to hardwire it to the unit.
4. Then, insert AC output wires according to polarities indicated on terminal block and tighten terminal screws.
Be sure to connect PE protective conductor ( ) first.
L→LINE (brown or black)
→Ground (yellow-green)
N→Neutral (blue)
5. Make sure the wires are securely connected.
PV Connection (Only apply for the model with solar charger)
CAUTION: Before connecting to PV modules, please install separately a DC circuit breaker between inverter and PV modules.
WARNING! All wiring must be performed by a qualified personnel.
WARNING! It's very important for system safety and efficient operation to use appropriate cable for PV module connection. To reduce risk of injury, please use the proper recommended cable size as below.
Model Typical Amperage Cable Size Torque
4KVA/5KVA 50A 8 AWG
Please configure PV system as following recommendation:
Model Best Vmp
1.4~1.6 Nm
Vmp range
4KVA/5KVA 60Vdc 56V~72V
Note: * Vmp: panel max power point voltage.
The PV charging efficiency is maximized while PV system voltage is close to Best Vmp.
Please follow below steps to implement PV module connection:
1. Remove insulation sleeve 10 mm for positive and negative conductors.
2. Check correct polarity of connection cable from PV modules and PV input connectors. Then, connect positive pole (+) of connection cable to positive pole (+) of PV input connector. Connect negative pole (-) of connection cable to negative pole (-) of PV input connector.
9
3. Make sure the wires are securely connected.
Final Assembly
After connecting all wirings, please put bottom cover back by screwing two screws as shown below.
Communication Connection
This inverter/charger is equipped with a communication port to communicate with a PC with corresponding software. Please use supplied communication cable to connect to RS-232 of this inverter and RS-232 port of the PC. Please access software download site to download the monitoring software in your PC. Software download website: www.power-software-download.com/watchpower.html. For the detailed software operation, please check user manual of software.
10
OPERATION
Power ON/OFF
Once the unit has been properly installed and the batteries are connected well, simply press On/Off switch
(located on the button of the case) to turn on the unit.
Operation and Display Panel
The operation and display panel, shown in below chart, is on the front panel of the inverter. It includes three indicators, four function keys and a LCD display, indicating the operating status and input/output power information.
LCD display
LED indicators
Function keys
LED Indicator
LED Indicator
Green
Messages
Solid On Output is available in bypass mode
Flashing Output is powered by battery in inverter mode
Green
Red
Solid On Battery is fully charged
Flashing Battery is charging.
Solid On Fault mode
Flashing Warning mode
Function Keys
Function Key Description
ESC Exit setting mode
UP
DOWN
ENTER
To previous selection
To next selection
To confirm the selection in setting mode or enter setting mode
11
LCD Display Icons
Icon
Input Source Information
Indicates the AC input.
Indicates the PV input
Function description
Indicate input voltage, input frequency, PV voltage, battery voltage and charger current.
Configuration Program and Fault Information
Indicates the setting programs.
Indicates the warning and fault codes.
Warning: flashing with warning code.
Fault:
Output Information lighting with fault code
Indicate output voltage, output frequency, load percent, load in VA and load in
Watt.
Battery Information
Indicates battery level by 0-24%, 25-49%, 50-74% and 75-100% in battery mode and charging status in line mode.
In AC mode, it will present battery charging status.
Status Battery voltage
<2V/cell
Constant
Current mode /
Constant
Voltage mode
2 ~ 2.083V/cell
2.083 ~ 2.167V/cell
> 2.167 V/cell
LCD Display
4 bars will flash in turns.
Bottom bar will be on and the other three bars will flash in turns.
Bottom two bars will be on and the other two bars will flash in turns.
Bottom three bars will be on and the top bar will flash.
Floating mode. Batteries are fully charged. 4 bars will be on.
12
In battery mode, it will present battery capacity.
Load Percentage Battery Voltage
< 1.717V/cell
LCD Display
1.717V/cell ~ 1.8V/cell
Load >50%
1.8 ~ 1.883V/cell
> 1.883 V/cell
< 1.817V/cell
1.817V/cell ~ 1.9V/cell
50%> Load > 20%
1.9 ~ 1.983V/cell
> 1.983
< 1.867V/cell
1.867V/cell ~ 1.95V/cell
Load < 20%
1.95 ~ 2.033V/cell
> 2.033
Load Information
Indicates overload.
Indicates the load level by 0-24%, 25-50%, 50-74% and 75-100%.
0%~25% 25%~50% 50%~75% 75%~100%
Mode Operation Information
Indicates unit connects to the mains.
Indicates unit connects to the PV panel.
Indicates load is supplied by utility power.
Indicates the utility charger circuit is working.
Mute Operation
Indicates the DC/AC inverter circuit is working.
Indicates unit alarm is disabled.
13
LCD Setting
After pressing and holding ENTER button for 3 seconds, the unit will enter setting mode. Press “UP” or
“DOWN” button to select setting programs. And then, press “ENTER” button to confirm the selection or
ESC button to exit.
Setting Programs:
Program Description Selectable option
Escape
00 Exit setting mode
01
Output source priority:
To configure load power source priority
Solar first:
Utility first (default):
SBU priority:
Solar energy provides power to the loads as first priority.
If solar energy is not sufficient to power all connected loads, battery energy will supply power the loads at the same time.
Utility provides power to the loads only when any one condition happens:
- Solar energy is not available
- Battery voltage drops to low-level warning voltage
Utility will provide power to the loads as first priority.
Solar and battery energy will provide power to the loads only when utility power is not available.
Solar energy provides power to the loads as first priority.
If solar energy is not sufficient to power all connected loads, battery energy will supply power to the loads at the same time.
Utility provides power to the loads only when battery voltage drops to the setting point in program 12.
10A:
30A:
20A:
40A:
02 Maximum charging current
50A (default):
Appliances(default): UPS:
03 AC input voltage range
14
04
05
06
07
09
Saving disable(default):
Saving mode enable:
Power saving mode
Battery type
Auto restart when overload occurs
AGM(default):
Flooded:
Restart disable(default): Restart enable:
Auto restart when over temperature occurs
Restart disable(default): Restart enable:
Output frequency
50Hz(default):
60Hz:
44V: 45V:
12
46V(default):
Setting voltage point back to utility source when selecting “SBU priority” in program 01
48V:
47V:
49V:
50V: 51V:
16
Charger source priority:
To configure charger source priority
If this inverter/charger is working in Line, Standby or Fault mode, charger source can be programmed as below:
Utility first:
Solar and Utility
(default): first priority.
Utility will charge battery only when solar energy is not available.
Utility will charge battery as first priority.
Solar energy will charge battery only when utility power is not available.
Solar energy and utility will charge battery at the same time.
15
If this inverter/charger is working in Battery mode or Power saving mode, only solar energy can charge battery. Solar energy will charge battery if it's available and sufficient.
Alarm on(default): Alarm off:
18 Alarm control
20 Backlight control
Backlight on(default): Backlight off:
22
23
25
Beeps while primary source is interrupted
Alarm on(default):
Alarm off:
Bypass enable:
Overload bypass:
When enable, the unit will transfer to line mode if overload occurs in battery mode
Bypass disable(default):
Record enable: Record disable(default):
Record Fault code
Display Setting
The LCD display information will be switched in turns by pressing “UP” or “DOWN” key. The selectable information is switched as below order:
input voltage, input frequency, battery voltage, charging current,
PV voltage, output voltage, output frequency, load percentage, load in Watt, load in VA, CPU1 Version and
CPU2 Version
Selectable information LCD display
Input Voltage=230V, output voltage=230V
Input voltage/Output voltage (Default)
Input frequency=50Hz, Output frequency=50Hz
Input frequency/Output frequency
Battery voltage=25.5V
Battery voltage/Output voltage
16
PV voltage/Load percentage
PV voltage=60V, Load percent=70%
Current ≧ 10A
Charging current/Output voltage
Current < 10A
Input voltage/Load in VA
When load is lower than 1kVA, load in VA will presents 350V as below.
When load is larger than 1kVA (≧1KVA), load in
VA will presents 1.5kVA as below:
17
Input voltage/Load in Watt
When load is lower than 1kW, load in W will present 270W as below:
When load is larger than 1kW (≧1KW), load in W will present 1.2kW as below.
Main CPU version 00014.04
Main CPU version checking
Secondary CPU version checking
Secondary CPU version 00003.03
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Operating Mode Description
Operation mode Description LCD display
Charging by utility and PV
Charging by utility
Standby mode/ Fault mode/
Power saving mode
No output is supplied by the unit but it still can charge batteries. Charging by PV
Line Mode
Battery Mode
No charging
Charging by utility and PV
The unit will provide output power from the mains. It will also charge the battery at line mode.
Charging by utility
Power from battery and PV power.
The unit will provide output power from battery and PV power. Power from battery only.
19
Fault Reference Code
Fault Code
01 Fan is locked
02 Over temperature
Fault Event
03
04
05
06
07
Battery voltage is too high
Battery voltage is too low
Output short circuited or Over temperature
Output voltage is too high
Over load time out
08
09
11
Bus voltage is too high
Bus soft start failed
Main relay failed
51
52
53
Over current inverter / Surge
Bus voltage is too low
Inverter soft start failed
54
55
56
Self-test failed
Over DC voltage on output of inverter
Battery connection is open
57 Current sensor failed
58 Output voltage is too low
Warning Indicator
Warning
Code
Warning Event
01 Fan is locked
03
04
07
10
Battery is over charged
Low battery
Overload
Power limitation
Audible Alarm
Beep three times every second
Beep once every 1second
Beep once every 1 second
Beep once every 0.5 second
Beep twice every 3 seconds
20
Icon flashing
Icon on
SPECIFICATIONS
Table 1 Line Mode Specifications
INVERTER MODEL
Input Voltage Waveform
Nominal Input Voltage
Low Loss Voltage
Low Loss Return Voltage
High Loss Voltage
High Loss Return Voltage
Max AC Input Voltage
Nominal Input Frequency
Low Loss Frequency
Low Loss Return Frequency
High Loss Frequency
High Loss Return Frequency
Output Short Circuit Protection
Efficiency (Line Mode)
Transfer Time
Power Limitation
4KVA 5KVA
Sinusoidal (utility or generator)
230Vac
170Vac± 7V (UPS);
90Vac± 7V (Appliances)
180Vac± 7V (UPS);
100Vac± 7V (Appliances)
280Vac± 7V
270Vac± 7V
300Vac
50Hz / 60Hz (Auto detection)
40± 1Hz
42± 1Hz
65± 1Hz
63± 1Hz
Circuit Breaker
>95% ( Rated R load, battery full charged )
10ms typical (UPS);
20ms typical (Appliances)
Output Power
Rated Power
50% Power
90V 170V 280V Input Voltage
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Table 2 Invert Mode Specifications
INVERTER MODEL
Rated Output Power
Output Voltage Waveform
Output Voltage Regulation
Output Frequency
Peak Efficiency
Overload Protection
Surge Capacity
Nominal DC Input Voltage
Cold Start Voltage
Low DC Warning Voltage
@ load < 20%
@ 20% ≤ load < 50%
@ load ≥ 50%
Low DC Warning Return Voltage
@ load < 20%
@ 20% ≤ load < 50%
@ load ≥ 50%
Low DC Cut-off Voltage
@ load < 20%
@ 20% ≤ load < 50%
@ load ≥ 50%
High DC Recovery Voltage
High DC Cut-off Voltage
No Load Power Consumption
Saving Mode Power Consumption
4KVA 5KVA
4KVA/3.2KW
Pure Sine Wave
5KVA/4KW
230Vac± 5%
50Hz
90%
5s@≥150% load; 10s@110%~150% load
2* rated power for 5 seconds
48Vdc
46.0Vdc
44.0Vdc
42.8Vdc
40.4Vdc
46.0Vdc
44.8Vdc
42.4Vdc
42.0Vdc
40.8Vdc
38.4Vdc
58Vdc
60Vdc
<50W
<15W
22
Table 3 Charge Mode Specifications
INVERTER MODEL
Charging Algorithm
Utility Charging Mode
Charging Current (UPS)
Charging Floating Voltage
Solar Charging Mode
Charging Current (PWM)
System DC Voltage
Max. PV Array Open Circuit Voltage
Standby Power Consumption
DC Voltage Accuracy
Table 4 General Specifications
INVERTER MODEL
Safety Certification
Operating Temperature Range
Storage temperature
Dimension (D*W*H), mm
Net Weight, kg
Charging Controls
Voltage Setting
Battery Type
Charging Curve
Flooded
AGM / Gel
Battery Voltage, per cell
2.43Vdc (2.35Vdc)
2.25Vdc
4/5KVA
3-Step
20/30Amp
54Vdc
50Amp
48Vdc
125Vdc
2W
+/-0.3%
4KVA/5KVA
CE
0°C to 55°C
-15°C~ 60°C
468 * 295 * 120
10
Boost CC, CV
48
58.4
56.4
Float
48
54
54
Charging Current, %
Voltage
100%
50%
T0 T1
T1 = 10* T0, minimum 10mins, maximum 8hrs
Bulk
(Constant Current)
Absorption
(Constant Voltage)
Maintenance
(Floating)
Current
Time
23
TROUBLE SHOOTING
Problem
Unit shuts down automatically during startup process.
No response after power on.
Mains exist but the unit works in battery mode.
LCD/LED/Buzzer Explanation / Possible cause
LCD/LEDs and buzzer will be active for 3 seconds and then complete off.
The battery voltage is too low
(<1.91V/Cell)
No indication.
Input voltage is displayed as 0 on the
LCD and green LED is flashing.
1. The battery voltage is far too low. (<1.4V/Cell)
2. Battery polarity is connected reversed.
Input protector is tripped
What to do
1. Re-charge battery.
2. Replace battery.
1. Check if batteries and the wiring are connected well.
2. Re-charge battery.
3. Replace battery.
Check if AC breaker is tripped and AC wiring is connected well.
1. Check if AC wires are too thin and/or too long.
2. Check if generator (if applied) is working well, or check if input voltage range setting is correct
(UPSAppliance)
Change output source priority to Utility first.
When the unit is turned on, internal relay is switched on and off repeatedly.
LCD display and LEDs are flashing.
Battery is disconnected.
Buzzer beeps continuously and red LED is on.
Fault code 07.
Fault code 05.
Fault code 02.
Fault code 03.
Fault code 01.
Fault code 06.
Check if battery wires are connected well.
Overload error. The inverter is loaded with more than 110% load and time is up
Output short circuited.
Temperature of internal converter component is over 120°C.
Internal Inverter component over
100°C
Battery is over charged.
The battery voltage is too high.
Fan fault
Output abnormal (Inverter voltage below than 190Vac or is higher than 260Vac)
Reduce the connected load by switching off some equipment.
Check if wiring is connected well and remove abnormal load.
Check whether the air flow of the unit is blocked or whether the ambient temperature is too high.
Return to repair center.
Check if spec and quantity of batteries are meet requirements.
Replace the fan.
1. Reduce the connected load.
2. Return to repair center
Fault code 08.
Fault code 09.
Internal components failed. Return to repair center
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Appendix: Approximate Back-up Time Table
Model
4KVA
Load (VA)
400
800
1200
1600
2000
2400
2800
3200
3600
4000
Backup Time @ 12Vdc 100Ah (min) Backup Time @ 12Vdc 200Ah (min)
766 1610
335
198
766
503
139
112
95
339
269
227
81
62
55
50
176
140
125
112
Model
5KVA
Load (VA)
500
1000
1500
2000
2500
3000
3500
Backup Time @ 12Vdc 100Ah (min) Backup Time @ 12Vdc 200Ah (min)
613 1288
268
158
111
90
76
65
613
402
271
215
182
141
4000
4500
5000
50
44
40
112
100
90
Note: Backup time depends on the quality of the battery, age of battery and type of battery.
Specifications of batteries may vary depending on different manufacturers.
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