EDECOA Hybrid Inverter/Charger User Manual

Models: EM-152A, EM-101A

Version: 2.3

About This Manual

This manual describes the assembly, installation, operation, and troubleshooting of this unit. It also provides safety and installation guidelines, as well as information on tools and wiring. Read this manual carefully before performing installations and operations. Keep this manual for future reference.

Safety Instructions

WARNING: This chapter contains important safety and operating instructions. Read and keep this manual for future reference.

Before using the unit, read all instructions and advertised markings on the unit, batteries, and all relevant sections of this manual.
CAUTION: To avoid danger, only charge deep-cycle acid-type rechargeable batteries. Charging other types of batteries may cause personal injury and damage.
Do not disassemble the unit. Take it to a qualified service center when service or repair is required. Incorrect reassembly may result in electric shock or fire. If you need to use other types of batteries, you can contact after-sales service for guidance.
Disconnect all wiring before attempting any maintenance or cleaning to reduce the risk of electric shock.
CAUTION: Only qualified personnel should install this device with a battery.
NEVER charge a frozen battery.
For optimal operation of this inverter/charger, please follow the required specifications to select the appropriate cable size. It is very important to correctly operate this inverter/charger.
Be careful when working with metal tools on or near batteries. There is a risk that a tool may fall and cause sparks or short circuits in the batteries, which could cause an explosion.
Strictly follow the installation procedure when disconnecting AC or DC terminals. Refer to the INSTALLATION section of this manual for more details.
GROUNDING INSTRUCTIONS: This inverter/charger must be connected to a permanently grounded wiring system. Ensure compliance with local requirements and regulations for installing this inverter.
NEVER short-circuit the AC output or the DC input. DO NOT connect the appliance to the power grid when the DC input is short-circuited.
Warning! Only qualified service personnel may perform maintenance on this device. If errors still occur after following the troubleshooting table, send this inverter/charger to the dealer or local service center for maintenance.

Introduction

This is a multi-function inverter/charger that combines the functions of an inverter, solar charger, and battery charger to provide an uninterrupted power supply. The LCD display allows for configuration of operation with easy-to-access buttons.

Features

Pure sine wave inverter
Input voltage range configurable for appliances and personal computers via LCD setting
Battery charge current configurable according to applications via LCD setting
Solar/AC charger priority configurable via LCD setting
Compatible with mains voltage or generator power
Automatic restart during AC recovery
Overload, over-temperature, and short-circuit protection
Smart battery charger design for optimized battery performance
Cold start function

Basic System Architecture

The following illustration shows the basic application of this inverter/charger. It also includes the following devices for a functional system:

Generator or Utility
Photovoltaic modules

Consult your system integrator for other possible system architectures according to your requirements, such as office equipment, including motor-driven appliances like fans, refrigerators, and air conditioners.

Figure 1 Hybrid Power System depicts the connection of solar panels (optional), a generator or utility power, an external battery, and home appliances to the EDECOA inverter/charger.

Operation

Power On/Off

When the unit is correctly installed and the batteries are properly connected, simply press the ON/OFF switch (located on the side of the unit) to turn on the inverter.

Operation and Display Panel

The operation and display panel, located on the front of the inverter, includes three indicators, four function keys, and an LCD screen that displays the operating status and input/output power information.

LED Indicator

Indicator	Color	Message
AC/INV	Green	Output is supplied by the mains in Line mode.
AC/INV	Brilliant	Output is supplied by battery or photovoltaic in battery mode.
CHG	Green	The battery is fully charged.
CHG	Brilliant	The battery is charging.
FAULT	Red	An inverter fault occurs. A warning condition occurs in the inverter.

Function Keys

Key	Description
ESC	Exit configuration mode.
UP	Go to the previous selection.
DOWN	Go to the next selection.
ENTER	Confirm the selection in configuration mode or enter configuration mode.

LCD Display Information

The LCD display shows various information including:

Input Source Information: Indicates AC input or photovoltaic input. Displays input voltage, input frequency, photovoltaic voltage, battery voltage, and charger current.
Configuration Program and Fault Information: Indicates the configuration program and displays warning and fault codes (e.g., ERROR).
Output Information: Displays output voltage, output frequency, load percentage, load in VA, load in Watts, and discharge current.

Battery Information

Displays battery type (SLA, Li) and charging status.

Charging Information

OVER LOAD: Indicates overload.

Information on Operating Mode

Mode	Description	LCD Display
Standby / Energy Saving Mode	No output, but the inverter can still charge batteries. For Energy Saving Mode, the inverter output will shut down when the connected load is too low or not detected.	Charging by Utility and Photovoltaic energy. Charging by Utility. Charging by Photovoltaic energy. No charging.
Fault Mode	Errors are caused by internal circuit errors or external reasons such as high temperature, short circuit, etc. Photovoltaic and mains power can charge batteries.	Charging by Utility and Photovoltaic energy. Charging by Utility. Charging by Photovoltaic energy. No charging.
Line Mode	The inverter will provide mains power output. The battery will also be charged.	Charging by public services and photovoltaic energy. Charging by part of the public services.

Silence Operation

The unit's alarm is deactivated.

LCD Configuration

After pressing and holding the ENTER button for 3 seconds, the unit will enter configuration mode. Press the UP or DOWN button to select configuration programs. Then press the ENTER button to confirm the selection or the ESC button to exit.

Program	Description	Available Options	Notes
00	Exit configuration mode	Default GOH	When selected, restores all programs to default values.
01	Output Source Priority: To configure the priority of the load power source	Default USB	Public utility provides energy to loads as the first priority. Solar energy and batteries provide energy when public service is not available.
		Sub	Solar energy supplies energy to loads preferentially. If solar energy is insufficient to power all connected loads, it will be supplemented by mains energy.
		Sbu	The battery provides energy to the loads only under the following conditions: - Neither solar energy nor public services are available. - Solar energy is insufficient and public service is not available.
		S6U	Solar energy provides energy to loads as the first priority. If solar energy is insufficient to power all connected loads, battery energy will supply energy to the loads simultaneously. Mains electricity provides energy to the load only when the battery voltage drops to the low warning voltage or the setting point in program 12.
		nFS	When solar energy is available, the priority sequence is utility → solar → battery. When solar energy is not available, the priority sequence is public service → battery, while the battery is the backup power source.
02	Maximum charging current: to configure the total charging current for solar and utility chargers (Maximum charging current = utility charging current + solar charging current)	10A (minimum) 40A (default) 80A (maximum)
03	AC input voltage range	Appliances (default) Universal Postal Union UPS	The AC input voltage range varies between 90 and 280 VAC. The AC input voltage range varies between 170 and 280 VAC.
05	Battery type	General assembly annual (default) ACn Defined by user USE	Flooded FLd If "Defined by user" is selected, the battery charging voltage and the low DC cutoff voltage can be configured in programs 26, 27, and 29.
06	Automatic restart when overload occurs	Restart disabled (default) LFd	Restart enabled LHE
07	Automatic restart when over-temperature occurs	Restart disabled (default) EF8	Restart enabled LHE
09	Output frequency	50 Hz (default) 60 Hz
10	Output voltage	220 V 240 V	230 V (default)
11	Maximum charging current of the public grid	2A (minimum) 20A (default) 40A (maximum)
12	Adjust the voltage point again for the public grid source when selecting "Priority SBU" or "Solar first" in program 01.	Default 11.5 V	Options available for EM-152A: the default value is 23.0 V, the range is from 21.0 V to 26.2 V.
13	Adjust the voltage point again to battery mode when selecting "Priority SBU" or "Solar first" in program 01.	Default 13.5 V	Options available for EM-101A: the default setting is 13.5 V, range from 12.0 V to 14.6 V. Options available for EM-152A: the default setting is 27.0 V, range from 24.0 V to 27.0 V.
14	Maximum battery discharge current when selecting "SBU" in 01	10A 30A	20A (default) 40A
16	Priority of charger source	Solar energy and public services (default) SNU	If this inverter/charger is operating in line, standby, or fault mode, the charger source can be programmed as follows: Solar energy and utility will charge the battery at the same time.
		Solar energy first C50	Solar energy will charge the battery with priority. Public services will charge the battery only when there is no solar energy available.
18	Alarm control	Alarm activated (default) 600	Alarm off 60F
19	Automatically return to the default display screen	Return to the default display screen (default) ESP	If selected, no matter how users change the display screen, it will automatically return to the default display screen (input voltage/output voltage) in 1 minute after no button is pressed. If selected, the display screen will remain on the previous screen that the user finally changed. HEP
20	Backlight control	Backlight activated (default) LON	Backlight off LOF
22	Beep when the main source is interrupted	Alarm activated (default) AON	Alarm off ROF
23	Overload bypass: When enabled, the unit will switch to line mode if an overload occurs in battery mode.	Bypass disabled (default) 698	Bypass enabled 698
25	Log error code	Logging enabled (default) FEN	Logging disabled Fas
26	Bulk charge voltage (CV)	EM-101A default configuration: 14.1 V EM-152A default configuration: 28.2 V	This program can only be configured when the autodefine option is selected in Program 5. The configuration range is from 12.0 V to 15.0 V for EM-101A and from 24.0 V to 30.0 V for EM-152B. The increment for each click is 0.1 V.
27	Float charge voltage	EM-101A default configuration: 13.5 V EM-152A default configuration: 27 V
29	Low DC cutoff voltage	EM-101A default configuration: 10.0 V EM-152A default configuration: 20.0 V	This program can only be configured when the autodefine option is selected in program 5. The configuration range is from 12.0 V to 15.0 V for EM-101A, 24.0 V to 30.0 V for EM-152A. The increment for each click is 0.1 V.
30	Battery equalization	EEN	EAS	This program is only available when "Flooded" or "Defined by user" is selected in program 05.
31	Battery equalization voltage	EM-101A default configuration: 14.6 V EM-152A default configuration: 29.2 V	The adjustment range for EM-101A is from 12.0 V to 15.0 V. The increment of each click is 0.1 V. The adjustment range for EM-152A is from 24.0 V to 30.0 V. The increment of each click is 0.1 V.
33	Battery equalization time	60 min (default)	The adjustment range is from 5 min to 900 min. The increment of each click is 5 min.
34	Battery equalization wait time	120 min (default)	The adjustment range is from 5 min to 900 min. The increment of each click is 5 min.
35	Equalization interval	30 days (default)	The configuration range is from 0 to 90 days. The increment of each click is 1 day.
36	Activate equalization immediately	Enable AEN	Disable (default) AdS	This program is only available when the equalization function is enabled in program 30. If "Enable" is selected in this program, battery equalization will be activated immediately and the main screen of the LCD will display "Eq". If "Disable" is selected, the equalization function will be canceled until the next scheduled equalization time according to program 35 settings. At this moment, "Eq" will not be displayed on the main screen of the LCD.

Display Configuration

The LCD display information will cycle by pressing the UP or DOWN key. The displayed information changes in the following order: input voltage, input frequency, photovoltaic voltage, charge current, photovoltaic power, battery voltage, output voltage, output frequency, load percentage, load in watts, load in VA, DC discharge current, CPU version.

Information Display

Display Information	LCD Screen
Input Voltage/Output Voltage (default display screen)	Input Voltage = 230 V, Output Voltage = 230 V
Input Frequency	Input Frequency = 50 Hz
Photovoltaic Voltage	Photovoltaic Voltage = 100 V
Photovoltaic Current	Photovoltaic Current = 2.5 A
Photovoltaic Power	Photovoltaic Power = 500 W
AC + PV Charging Current = 40 A	BATT AC PV OUTPUT
Photovoltaic Charging Current = 20 A	BATT PV OUTPUT
AC Charging Current = 20 A	BATT AC OUTPUT
AC + PV Load Power = 500 W	BATT OUTPUT
Photovoltaic Load Power = 500 W	BATT OUTPUT
AC Load Power = 500 W	BATT OUTPUT
Battery Voltage and Output Voltage	Battery Voltage = 25.5 V, Output Voltage = 230 V
Output Frequency	Output Frequency = 50 Hz
Load Percentage	Load = 70%
Load in VA/kVA	Load = 350 VA Load = 1.5 kVA
Load in W/kW	Load = 270W Load = 1.2kW
Battery Voltage/DC Discharge Current	Battery Voltage = 25.5 V, Discharge Current = 1 A
Main CPU Version	Version No. 20.11

Description of Operating Mode

Operation Mode	Description	LCD Display
Standby / Energy Saving Mode	No output, but the inverter can still charge batteries. Note: Standby Mode: The inverter is not yet powered on, but at this moment, with this function, the inverter can charge the battery without AC output. Energy Saving Mode: If enabled, the inverter output will shut down when the connected load is too low or not detected.	Charging by Utility and Photovoltaic energy. Charging by Utility. Charging by Photovoltaic energy. No charging.
Fault Mode	Note: *Fault Mode: Errors are caused by internal circuit errors or external reasons such as high temperature, short circuit, etc. Photovoltaic and mains power can charge batteries.	Charging by Utility and Photovoltaic energy. Charging by Utility. Charging by Photovoltaic energy. No charging.
Line Mode	The inverter will provide mains power output. The battery will also be charged.	Charging by public services and photovoltaic energy. Charging by part of the public services.

Battery Equalization Description

The equalization function reverses the accumulation of chemical effects such as stratification, a condition where the acid concentration is higher at the bottom of the battery than at the top. This condition (sulfation) will reduce the overall capacity of the battery. Therefore, it is recommended to equalize the battery periodically. Equalization also helps to remove sulfate crystals that may have accumulated on the plates.

How to Apply the Equalization Function

First, enable the battery equalization function in the monitoring LCD screen program 33. Then apply this function on the device using one of the following methods:

Adjust the equalization interval in program 34.
Active equalization immediately in program 36.

When to Equalize

In the float stage, when the equalization interval setting is reached (battery equalization cycle), or equalization is active immediately, the controller will begin to enter the equalization stage.

Charging Curve Diagram: Illustrates the relationship between battery voltage, charging current, and time during different charging stages (Bulk, Absorption, Float, Equalize).

Equalize Charge Time and Wait Time

In the equalization stage, the controller will supply energy to charge the battery as much as possible until the battery voltage rises to the battery equalization voltage. Then, a constant voltage regulation is applied to maintain the battery voltage at the battery equalization voltage. The battery will remain in the equalization stage until the set equalization time is reached.

However, in the equalization stage, when the battery equalization time has expired and the battery voltage does not increase to the battery equalization voltage point, the charge controller will extend the battery equalization time until the battery voltage reaches the battery equalization voltage. If the battery voltage remains lower than the battery equalization voltage when the battery equalization wait time ends, the charge controller will stop equalization and return to the float stage.

Fault Reference Code

When a fault occurs, the ERROR icon will be lit; check the fault code below when it occurs.

Fault Code	Fault Description	Icon
01	Fan is blocked when the inverter is OFF.	01 ERROR
02	Over temperature.	02 ERROR
03	Battery Voltage is too high.	03 ERROR
04	Battery Voltage is too low.	04 ERROR
05	Short circuit or over temperature is detected in internal converter components.	05 ERROR
06	Production Voltage is too high.	06 ERROR
07	Overload time out.	07 ERROR
08	Bus Voltage is too high.	08 ERROR
09	Soft start bus failed.	09 ERROR
51	Overcurrent/overvoltage.	51 ERROR
52	Bus voltage is too low.	52 ERROR
53	Soft start failure.	53 ERROR
55	Over DC voltage.	55 ERROR
57	Current sensor failure.	57 ERROR
58	Output voltage is too low.	58 ERROR
59	Photovoltaic voltage exceeds limits.	59 ERROR

Warning Indicator

When a warning occurs, the icon will be lit; check the fault code below when it occurs.

Warning Code	Event of Warning	Audible Alarm	Icon
01	The fan is blocked when the inverter is on.	Beeps three times per second.	01 ?
03	Battery overloaded.	Beeps once every second.	03 ?
04	Low battery.	Beeps once every second.	04 ?
07	Overload.	Beeps once every 0.5 seconds.	07 ? OVER LOAD
10	Output power reduction.	Beeps twice every 3 seconds.	10 ?
12	Solar charger stops due to low battery.		12 ?
13	Solar charger stops due to high photovoltaic voltage.		13 ?
14	Solar charger stops due to overload.		14 ?

Specifications

Table 1 Line Mode Specifications

INVERTER MODEL	EM-101A	EM-152 A
Input Voltage Waveform	Sinusoidal (utility or generator)
Nominal Input Voltage	230 V AC
Low Voltage Loss	170 V AC ± 10 V (UPS) 90 V AC ± 10 V (Appliances)
Low Voltage Return Loss	180 V AC ± 10 V (UPS) 100 V AC ± 10 V (Appliances)
High Voltage Loss	280 V AC ± 10 volts
High Voltage Return Loss	270 V AC ± 10 volts
Maximum AC Input Voltage	30 0 V AC
Nominal Input Frequency	50 Hz / 60 Hz (automatic detection)
Low Frequency Cutoff	40 ± 1 Hz
Frequency Recovery (low)	42 ± 1 Hz
High Frequency Cutoff	65 ± 1 Hz
Frequency Recovery (high)	63 ± 1 Hz
Output Short Circuit Protection	Short circuits
Efficiency (Line Mode)	>95% (nominal load R, battery fully charged)
Transfer Time	10 ms

Table 2 Inverter Mode Specifications

INVERTER MODEL	EM-101A	EM-152 A
Rated Power	1kVA / 1kW	1.5 kVA/ 1.5 kW
Output Voltage Waveform	Pure sine wave
Output Voltage Regulation	23 0 V AC ±5%
Output Frequency	50 Hz
Maximum Efficiency	94%
Overload Protection	3s at ≥50% load; 5s at 100% ~ 150% of load
Surge Capacity	2 * rated power for 1 second
Nominal DC Input Voltage	12 V DC	24 V DC
Cold Start Voltage	11.5 V DC	23.0 V DC
Low DC Voltage Warning	@load < 50% @load ≥ 50%	11.25 V DC 11.0 V DC	22.5 V DC 2 2.0 V DC
Low DC Return Voltage Warning	@load < 50% @load ≥ 50%	11.75 V DC 11.5 V DC	23.5 V DC 23.0 V DC
Low DC Cutoff Voltage	@load < 50%	10.75 V DC	21.5 V DC
	@load ≥ 50%	10.5 V DC	21.0 V DC
High DC recovery voltage	15.5 V DC		31 V DC
High DC cutoff voltage	16.0 V DC		3.2 V DC
No-load power consumption	<28 W		<2 8 W

Table 3 Utility Charge Mode Specifications

INVERTER MODEL	EM-101 A	EM-152 A
Charging Algorithm	3 - Step
Maximum AC Charging Current	40 A
Charging Voltage	Battery flooded: 14.6 V Battery AGM/Gel: 14.1 V	29.2 volts 28.2 volts
Floating Charge Voltage	13.5 VDC	27.0 VCC

Table 4 Solar Charge (MPPT) Specifications

INVERTER MODEL	EM-101 A	EM-152 A
Rated Power	600 W	1200 W
Maximum Open Circuit Voltage of Photovoltaic Array	1 50 VDC
MPPT Voltage Range of Photovoltaic Array	20-150 VCC	30-150 VCC
Maximum Photovoltaic Charging Current	40A
Maximum Charging Current (FV + CA)	80A

Table 4 Specifications of Charge Mode

Model	EM -101 A	EM -152 A
Safety Certification	CE
Operating Temperature Range	-10~50 °C
Storage Temperature	-15 ~ 60 °C

Dimensions

(depth x width x height) (mm)	EM-101A	EM-152 A
Dimensions	286 * 240 * 91
Net Weight (kg)	3	3.5

Troubleshooting

Problem	LCD/LED/Buzzer	Explanation / Possible Cause	What to do?
Shuts down automatically during the startup process.	LCD/LED and buzzer activate for 3 seconds and then shut down completely.	The battery voltage is too low (<1.91 V/cell).	1. Recharge the battery. 2. Replace the battery.
No response after power on.	The input voltage shows 0 on the LCD and the green LED flashes.	1. The battery voltage is too low (<1.4 V/cell). 2. The battery polarity is connected incorrectly.	1. Check that the batteries and wiring are firmly connected. 2. Fuse replacement. 3. Recharge the battery. 4. Replace the battery.
Mains power is present but the equipment operates in battery mode.	The green LED flashes.	Insufficient quality of AC power (mains or generator).	Verify if the AC circuit breaker is tripped and if the AC wiring is properly connected. 1. Check if the AC cables are too thin and/or too long. 2. Verify if the generator (if applicable) is functioning properly or if the configured input voltage range is correct.
When the unit is on, the internal relay remains ON and OFF repeatedly.	The green LED flashes. The LCD screen and LEDs flash.	"Solar First" is selected. The battery is disconnected.	Change the priority of the output source to the utility. Check if the battery cables are properly connected.
The buzzer emits a continuous beep and the red LED is on.	Error code 07	Overload error. The inverter is overloaded by 110% and has timed out. Short circuit in output.	Reduce the connected load by turning off some equipment. Verify if the wiring is properly connected and eliminate the abnormal load.
	Error code 05	The temperature of the internal converter component is higher than 120 °C.	Check if the unit's airflow is blocked or if the ambient temperature is too high.
	Error code 02	The internal temperature of the inverter component is higher than 100 °C.
	Error code 03	The battery is overloaded. The battery voltage is too high.	Return to the service center. Verify if the specifications and quantity of batteries meet the requirements.
	Error code 01	Fan failure.	Replace the fan.
	Abnormal output (inverter voltage lower than 190 VAC) or higher than 260 VAC.	1. Reduce the load connection. 2. Return to the repair center.
Error code 08/09/53/57	Internal components failed.	Return to the repair center.
Error code 51	Overcurrent or overvoltage.	Restart and if it happens again, return to the repair center.
Error code 52	Bus voltage too low.
Error code 55	Output voltage imbalance.
Error code 56	Battery connection problem or blown fuse.	Check the battery connection.

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