Qoltec Hybrid Solar Inverter User Manual
This manual provides instructions for the assembly, installation, operation, and troubleshooting of the Qoltec Hybrid Solar Inverter. Please read this manual carefully before installing and operating the device. Keep the manual for future reference.
About the Product
This is a multifunctional inverter that combines inverter, solar charger, and battery charger functions, offering uninterrupted power support in one package. The universal LCD display offers user-friendly and easily accessible button operations, such as battery charging current, AC or solar charging priority, and allowable input voltage according to different applications.
Product Components:
- 1. LCD Display
- 2. Status Indicator
- 3. Charging Indicator
- 4. Fault Indicator
- 5. Function Buttons
- 6. Grounding Terminal
- 7. AC Input Terminal
- 8. AC Output Terminal
- 9. Battery Input Terminal
- 10. PV Input Terminal
- 11. Wi-Fi Communication Port
- 12. Power On/Off Switch
Installation
I. Preparation
Before installation, inspect the unit. Ensure that nothing in the package is damaged. You should receive the following items: solar inverter, user manual.
Before connecting any wires, remove the bottom cover by unscrewing the three screws as shown in the illustration.
II. Unit Mounting
Before selecting a mounting location, consider the following:
- Do not mount the inverter on combustible building materials.
- Mount on a solid surface.
- Mount this inverter at eye level so that the LCD display is always visible.
- For optimal performance, the ambient temperature should be between 0°C and 55°C.
- The recommended mounting position is vertically against a wall.
- Ensure that other objects and surfaces are arranged as shown in the diagram to ensure proper heat dissipation and sufficient space for cable routing.
NOTE: SUITABLE FOR MOUNTING ON CONCRETE OR OTHER NON-COMBUSTIBLE SURFACES ONLY.
Mount the unit by tightening three screws. M4 or M5 screws are recommended.
III. Battery Connection
NOTE: To ensure safe operation and compliance with regulatory requirements, a separate DC protection or disconnecting device must be installed between the battery and the inverter. In some cases, a disconnecting device may not be required, but current protection is still necessary. Refer to the typical current table below for the required fuse or breaker size.
WARNING: All electrical wiring work must be performed by qualified personnel.
WARNING: To ensure system safety and efficient operation, it is crucial to use the correct cable for battery connection. To minimize the risk of injury, use the recommended cable, stripping length (L2), and tinning length (L1) as specified below.
Recommended battery cable stripping length (L2) and tinning length (L1):
| Model | Max. Current | Battery Capacity | Cable Size | Cable mm² | L1 (mm) | L2 (mm) | Torque |
|---|---|---|---|---|---|---|---|
| 1500W-24 | 70 A | 100 AH | 6 AWG | 13.3 | 3 | 18 | 2~3 Nm |
| 2500W-24 | 100 A | 100 AH | 4 AWG | 21.15 | 3 | 18 | 2~3 Nm |
| Other models | 140 A | 100 AH | 2 AWG | 38 | 3 | 18 | 2~3 Nm |
Battery connection steps:
- Strip 18 mm of insulation from the positive and negative wires according to the recommended stripping length.
- Connect all batteries as required by the unit. Using batteries of the recommended capacity is advised.
- Insert the flat battery cable into the inverter's battery connector and ensure the screws are tightened to 2-3 Nm torque. Ensure that the polarity of both the battery and the inverter/charger is correct and that the battery cables are securely screwed into the battery connector.
WARNING: Risk of electric shock. Installation must be performed with caution due to the high DC battery voltage.
CAUTION: Do not place anything between the flat part of the inverter terminals, otherwise overheating may occur.
CAUTION: Do not apply antioxidant to the terminals until they are properly connected.
NOTE: Before finally connecting the DC or closing the DC switch/breaker, ensure that the positive (+) terminal is connected to the positive (+) terminal, and the negative (-) terminal is connected to the negative (-) terminal.
IV. AC Input/Output Connection
NOTE: Before connecting to the AC source, install a separate AC breaker between the inverter and the AC source. This ensures that the inverter can be safely disconnected during maintenance and that the AC power is fully protected against overcurrent. The recommended AC breaker specification is 50 A.
NOTE: There are two terminal blocks labeled "IN" and "OUT". Please DO NOT confuse input and output.
WARNING: All wiring must be performed by qualified personnel.
WARNING: To ensure system safety and efficient operation, it is crucial to use the correct cable for AC power connection. To minimize the risk of injury, use the recommended cable size as specified below.
Recommended AC cable requirements:
| Model | Cross-section | Torque Value |
|---|---|---|
| 1.5 KVA | 12 AWG | 1.4~1.6 Nm |
| 2.5KVA/3.5KVA | 10 AWG | 1.4~1.6 Nm |
| 5.5KVA | 8 AWG | 1.4~1.6 Nm |
AC input/output connection steps:
- Before connecting the AC input/output, ensure the DC switch is open.
- Remove 10 mm insulation from the six wires. Shorten the L phase wire and N neutral wire by 3 mm.
- Insert the AC input wires according to the polarity indicated on the terminal block and tighten the terminal screws. Ensure you connect the PE protective conductor first.
- PE -> GROUND (yellow-green)
- L -> LINE (brown)
- N -> NEUTRAL (blue)
Warning: Before attempting to connect the AC power source to the unit, ensure it is disconnected.
- Then, connect the AC output wires according to the polarity indicated on the terminal block and tighten the terminal screws. Connect the protective PE conductor first.
PE -> Ground (yellow-green)
L -> LINE (brown)
N -> NEUTRAL (blue)
- Ensure the wires are connected correctly.
NOTE: For appliances such as air conditioners, a minimum of 2-3 minutes is required for restarting to allow sufficient time for balancing refrigerant gas in the circuits. If power outages occur and are restored within a short period, connected appliances may be damaged. To prevent such damage, consult the air conditioner manufacturer before installing an air conditioner to see if it has a time delay function. Otherwise, this inverter/charger will trigger an overload error and shut down the output to protect the unit, but it may still damage the inside of the air conditioner.
V. PV Connection
NOTE: A DC switch must be installed separately between the inverter and the PV modules before connecting to the PV modules.
WARNING! All wiring must be performed by qualified personnel.
WARNING! To ensure system safety and efficient operation, it is crucial to use the correct cable for connecting the photovoltaic module. To minimize the risk of injury, use the appropriately recommended cable size as specified below.
| Model | Typical Current | Cable Size | Torque |
|---|---|---|---|
| 1.5 KVA | 15 A | 12 AWG | 1.4~1.6 Nm |
| 2.5 KVA | 15 A | 12 AWG | 1.4~1.6 Nm |
| 3.5KVA | 15 A | 12 AWG | 1.4~1.6 Nm |
| 5.5KVA | 18 A | 12 AWG | 1.4~1.6 Nm |
| 6.2 KVA | 27 A | 12 AWG | 1.4~1.6 Nm |
PV Module Selection:
When selecting suitable PV modules, the following parameters should be considered:
- The open-circuit voltage (Voc) of the PV modules does not exceed the maximum open-circuit voltage of the inverter.
- The open-circuit voltage (Voc) of the photovoltaic modules should be greater than the minimum battery voltage.
| Solar Charging Mode | ||
|---|---|---|
| INVERTER MODEL | 1.5KW-3.5KW | 5.5KVA |
| Max. PV Array Open Circuit Voltage | 500DC | |
| PV Array MPPT Voltage Range | 30VDC to 500VDC | 60VDC to 500VDC |
| Max. PV INPUT CURRENT | 15A | 18A |
As an example, consider 450 Wp and 550 Wp photovoltaic modules. Based on the two parameters above, the recommended module configurations are provided in the table below.
| Solar Panel Specification (Reference) - 450 Wp - Vmp: 34.67 Vdc - Imp: 13.82A - Voc: 41.25 Vdc - Isc: 12.98A |
SOLAR INPUT | Number of Panels | Total Input Power | Model |
| 1 in series | 1 | 450W | 1.5-5.5 KW | |
| 2 in series | 2 | 900 W | ||
| 3 in series | 3 | 1,350 W | ||
| 4 in series | 4 | 1,800 W | ||
| 5 in series | 5 | 2,250 W | 2.5-5.5 KW | |
| 6 in series | 6 | 2,700 W | ||
| 7 in series | 7 | 3,150 W | ||
| 8 in series | 8 | 3,600 W | 3.5-5.5 KW | |
| 9 in series | 9 | 4,050 W | ||
| 10 in series | 10 | 4,500 W | 5.5 KVA | |
| 11 in series | 11 | 4,950 W | ||
| 12 in series | 12 | 5,400 W | ||
| 6 in series and 2 parallel | 12 | 5,400 W | ||
| Solar Panel Specification (Reference) - 550Wp - Vmp: 42.48 Vdc - Imp: 12.95A - Voc: 50.32 Vdc - Isc: 13.70A |
SOLAR INPUT | Number of Panels | Total Input Power | Model |
| 1 in series | 1 | 550 W | 1.5-5.5 KW | |
| 2 in series | 2 | 900 W | 1.5KVA-5.5KW | |
| 3 in series | 3 | 1,650 W | ||
| 4 in series | 4 | 2,200 W | 2.5 KVA-5.5 KW | |
| 5 in series | 5 | 2,750 W | ||
| 6 in series | 6 | 3,300 W | 3.5-5.5 KW | |
| 7 in series | 7 | 3,850 W | ||
| 8 in series | 8 | 4,400 W | 5.5 KW | |
| 9 in series | 9 | 4,950 W | ||
| 6 series sets and 2 parallel sets | 12 | 4,400 W | ||
| 5 series sets and 2 parallel sets | 10 | 5,500 W |
Photovoltaic module cable connection:
- Strip 10 mm of insulation from the positive and negative cables.
- Check if the polarity of the connecting cable from the PV modules and the PV input connectors is correct. Then connect the positive (+) pole of the connecting cable to the positive (+) pole of the PV input connector. Connect the negative (-) pole of the connecting cable to the negative (-) pole of the PV input connector.
- Ensure the wires are connected correctly.
VI. Final Assembly
Once all wires are connected, replace the bottom cover by tightening the two screws as shown below.
Operation
I. Powering On and Off
After correctly installing the unit and connecting the batteries, simply press the power on/off switch (located on the unit's button) to turn on the unit.
II. Control and Display Panel
The control and display panel, shown in the diagram below, is located on the front panel of the inverter. It features three indicators, four function buttons, and an LCD screen that displays the operating status, input/output power information, and power source information.
| LED Indicator | Color | Status | Message |
|---|---|---|---|
| AC/INV | Green | Solid | Output is directly powered by the mains "Line Mode" |
| Flashing | Output is powered by battery or PV battery in "Battery Mode" | ||
| CHG | Green | Solid | Battery is charged |
| Flashing | Battery is charging | ||
| FAULT | Red | Solid | An error has occurred in the inverter. |
| Flashing | There is a warning in the inverter. |
Key Functions
| Key | Description |
|---|---|
| ESC | Exit setting mode |
| UP | Move to the previous setting |
| DOWN | Move to the next option |
| ENTER | Confirm selection in setting mode or enter setting mode |
III. LCD Display Settings
By pressing and holding the ENTER button for 3 seconds, the unit enters setting mode. Press the UP or DOWN button to select setting programs. Then press the ENTER button to confirm the selection, or the ESC button to exit.
Program Settings
| Program | Description | Selection Option | |
|---|---|---|---|
| 01 | Output Source Priority: Set the priority of the load source. | Utility Priority | Power will be supplied to users first from the mains. Solar and battery power will only be supplied to users when mains power is unavailable. |
| Solar Priority | Solar power will be supplied to users first. If solar power is insufficient to power all connected users, battery power will simultaneously supply users. Mains power will supply power to users only when one of the following conditions occurs: - Solar power is unavailable - Battery voltage drops to the low warning voltage or the setting point specified in Program 12. |
||
| SBU Priority | Solar power will supply power to users first. If solar power is insufficient to power all connected users, battery power will simultaneously supply users. Mains power will supply power to users only when the battery voltage drops to the low warning voltage level or the setting point specified in Program 12. | ||
| SUB Priority | Solar power is charged first, and then power is supplied to users. If solar power is insufficient to power all connected users, mains power will simultaneously supply users. | ||
| SUF Priority | If solar power is sufficient to power all connected users and charge the battery, solar power can be fed back to the mains. If solar power is insufficient to power all connected users, mains power will simultaneously supply users. |
||
| 02 | Max Charging Current: Used to configure the total charging current of solar and mains chargers. (Max charging current = mains charging current + solar battery charging current). | 60 A (default) | If this option is selected, the allowable charging current range will be from the maximum charging current of the AC power source to the maximum charging current specified in the specification. However, the charging current must not be lower than the AC charging current set in Program 11. |
| 03 | AC Input Voltage Range | Appliance (default) | If selected, the allowable AC input voltage range will be from 90 to 280 V AC. |
| UPS | If selected, the allowable AC input voltage range will be from 170 to 280 VAC. | ||
| Generator | If selected, the allowable AC input voltage range will be from 170 to 280 V AC and will be compatible with generators. Note: Due to generator instability, the inverter output may also be unstable. | ||
| 05 | Battery Type | AGM (default) | |
| Flooded | |||
| User Defined | If the "User Defined" option is selected, the battery charging voltage and the low DC cut-off voltage can be set in Programs 26, 27, and 29. | ||
| Lithium battery without communication | If "LIB" is selected, the default battery values are suitable for a lithium battery without communication. The battery charging voltage and the low DC cut-off voltage can be set in Programs 26, 27, and 29. | ||
| 06 | Auto Restart on Overload | Auto Restart Disabled | |
| Auto Restart Enabled (default) | |||
| 07 | Auto Restart on Over Temperature | Auto Restart Disabled | |
| Auto Restart Enabled (default) | |||
| 08 | Output Voltage | 220 V | 230V (default) |
| 240 V | |||
| 09 | Output Frequency | 50 Hz (default) | 60 Hz |
| 10 | Auto Bypass: If "auto" is selected, if the power source is suitable, the system will automatically switch to bypass mode even if the switch is in the "off" position. | Manual (default) | Automatic |
| 11 | Max. Mains Charging Current | 30 A (default) | If selected, the allowable charging current range will be from 2 to the specified maximum AC charging current. |
| 12 | Voltage Setting Point to Mains when "SBU priority" or "Solar first" is selected in Program 01. | 48V models: default is 46V. However, the setting range for the 48V model is from 44.0V to 57.2V: the max set value must be less than the value set in Program 13, the min set value must be greater than the value set in Program 29. | |
| 24V models: default is 23V. However, the setting range for the 24V model is from 22.0V to 28.6V: the max set value must be less than the value set in Program 13, the min set value must be greater than the value set in Program 29. | |||
| 12V models: default setting is 11.5V. However, the setting range for the 12V model is from 11.0V to 14.3V: the max set value must be less than the value set in Program 13, the min set value must be greater than the value set in Program 29. | |||
| 13 | Voltage Setting Point for Battery Mode when "SBU priority" or "Solar first" is selected in Program 01. | Fully Charged Battery (default) | 48V models: The setting range is from 48V to the max value equal to Program 26 minus 0.4V, but the max set value must be greater than the value set in Program 12. 24V models: However, the max set value must be greater than the value set in Program 12. 12V models: The setting range is from 12V to the max value equal to Program 13 minus 0.4V, but the max set value must be greater than the value set in Program 12. |
| 16 | Charging Source Priority: Used to set the priority of the charging source. | Solar (default) | When charging the battery, priority will be given to solar power. Mains power will charge the battery only when solar power is unavailable. |
| Solar and Mains Simultaneously | Solar power and mains power will charge the battery simultaneously. | ||
| Solar Only | Solar power will be the only charging source, regardless of whether mains power is available. | ||
| If this inverter/charger operates in battery mode, solar power will be the only charging source for the battery. The battery will be charged only when solar power is available and sufficient. | |||
| 18 | Buzzer Mode | Mode 1 | Buzzer disabled |
| Mode 2 | Buzzer activates when the power source changes or when a specific warning or fault occurs. | ||
| Mode 3 | Buzzer activates when a specific warning or fault occurs. | ||
| Mode 4 (default) | Buzzer activates when a fault occurs. | ||
| 19 | Auto Return to Default Display | Return to Default Display (default) | If this option is selected, regardless of which screen the user is on, the display will automatically return to the default display screen (input/output voltage) after 1 minute of inactivity. |
| Stay on Last Screen | If this option is selected, the display will remain on the last screen selected by the user. | ||
| 20 | Backlight Control | Backlight On (default option) | |
| Backlight Off | |||
| 23 | Overload Bypass: If enabled, the unit switches to mains power mode if there is an overload in battery mode. | Bypass Disabled | Bypass Enabled (default) |
| 25 | Modbus ID Setting | Modbus ID Setting Range: 001 (default) | |
| 26 | Bulk Charging Voltage (C.V. Voltage) | If the "User-defined" option is selected in Program 05, this program can be set. However, the setting value must be equal to or greater than the value of Program 27. An increment of 0.1V is possible with each press. 24V models: default value is 28.2V, setting range is from 24.0V to 30.0V. 48V models: default is 56.4V, setting range is from 48.0V to 62.0V. |
|
| 27 | Float Charging Voltage | If "User-defined" is selected in Program 05, this program can be configured. 12V models: Default setting: 13.5V. The setting range is from 12.0V to the value of Program 26. 24V models: Default setting is 27.0V. The setting range is from 24.0V to the value of Program 26. 48V models: Default setting is 54.0V. The setting range is from 48.0V to the value of Program 26. |
|
| 29 | Low DC Cut-off Voltage | If "User-defined" is selected in Program 05, this program can be set. The setting value must be less than the value of Program 12. An increment of 0.1V is possible with each press. The low DC cut-off voltage will be fixed at the selected value, regardless of the connected load. 12V models: Default setting is 10.5V, setting range is from 10.0V to 13.5V. 24V models: Default setting is 21.0V, setting range is from 20.0V to 27.0V. 48V models: Default setting is 42.0V, setting range is from 40.0V to 54.0V. |
|
| 32 | Bulk Charging Time (C.V. Stage) | Automatic (default) | If this option is selected, the inverter will automatically evaluate the charging time. |
| 5 min. | The setting range is from 5 minutes to 900 minutes. | ||
| 900 min | The value can be increased by 5 minutes with each press. | ||
| If "USE" is selected in Program 05, this program can be set. | |||
| 33 | Battery Equalization | Battery Equalization | Battery Equalization Disabled (default) |
| If "Flooded" or "User-defined" is selected in Program 05, this program can be set. | |||
| 34 | Battery Voltage Equalization | 12V models: The setting range is from 12V to the max value equal to Program 13 minus 0.4V, but the max set value must be greater than the value set in Program 12. 24V models: Default value is 29.2V. The setting range is from the float voltage to 30V. The value can be increased by 0.1V with each press. 48V models: Default value is 58.4V. The setting range is from the float voltage to 64V. The value can be increased by 0.1V with each press. |
|
| 35 | Battery Equalization Time | 60 min (default) | The setting range is from 0 minutes to 900 minutes. |
| 36 | Battery Equalizing Time | 120 min (default) | The setting range is from 0 minutes to 900 minutes. |
| 37 | Equalizing Interval | 30 days (default) | The setting range is from 1 to 90 days. |
| 39 | Immediate Equalization Activation | Enabled | Disabled (default) |
| If "Enable" is selected in this program, the battery equalization function will be activated immediately and "E9" will be displayed on the main LCD screen. If "Disable" is selected, the equalization function will be canceled until the next scheduled equalization according to the setting in Program 37. If set in Program 37, then "E9" will not be displayed on the main LCD screen. | |||
| 41 | Auto Lithium Battery Activation | Auto Activation Disabled | |
| When "LIx" is selected as the lithium battery in Program 05 and the battery is not detected, the unit will automatically activate the lithium battery at the specified time. If you want to activate the lithium battery automatically, you need to restart the unit. | |||
| 42 | Manual Lithium Battery Activation Attention: This function is only available on models that support lithium battery activation. For other models, this is a reserved setting (cannot be used). |
Default value: activation disabled | When "LIx" is selected as the lithium battery in Program 05 and the battery is not detected, you can select this option to manually activate the lithium battery at a specified time. |
| 46 | Max. Discharge Current Protection | Default value OFF (disabled) | Discharge Current Protection Disabled |
| Enabled | Only available in single unit mode. When mains power is available, the unit switches to mains power mode and battery discharge is stopped when the set discharge current is exceeded. When mains power is unavailable, a warning is displayed, and battery discharge continues despite exceeding the set discharge current value. The setting range is from 20 A to 500 A. |
IV. Battery Equalization
The charge controller has a built-in equalization function. It helps to eliminate negative chemical effects such as stratification, a condition where the acid concentration is higher at the bottom of the battery than at the top. Equalization also helps to eliminate sulfate crystals that can settle on the plates. If this condition, known as sulfation, is left unchecked, it can reduce the overall capacity of the battery. Therefore, it is recommended to equalize the battery periodically.
How to apply the equalization function:
- Turn on the battery equalization function in Program 33 of the LCD monitor settings.
- Then, you can apply this function to the unit in one of the following ways:
- Set the equalization interval in Program 37.
- Activate equalization immediately in Program 39.
When to Equalize:
In float mode, when the set equalization time (battery equalization cycle) is reached, or when equalization is activated immediately, the controller enters equalization mode.
Equalization Charge Time and Timeout:
During the equalization stage, the controller supplies maximum power to charge the battery until the battery voltage reaches the set equalization voltage. Then, a constant voltage charge is applied to maintain the battery voltage at the equalization voltage. The battery remains in the equalization stage until the set equalization time is reached. However, during the equalization stage, if the set equalization time expires and the battery voltage has not reached the set equalization voltage, the charge controller will extend the equalization time until the battery voltage reaches the required level. If, after the extended equalization time, the battery voltage is still below the set equalization voltage, the charge controller will terminate the equalization process and return to float mode.
V. Lithium Battery Settings
Settings for Lithium Battery Without Communication
This recommendation applies when using lithium batteries and is intended to prevent the battery BMS (Battery Management System) protection from triggering when there is no communication between the BMS and the unit. The following steps should be performed before starting the setup:
- Before starting the setup, obtain the battery BMS specification, specifically:
A. Maximum charging voltage
B. Maximum charging current
C. Discharge protection voltage - Set the battery type to "LIB".
| 05 | Battery Type | AGM (default) | Flooded | User Defined | Lithium Ion Battery Without Communication |
|---|---|---|---|---|---|
| If "User Defined" is selected, the battery charging voltage and the low DC cut-off voltage can be set in Programs 26, 27, and 29. | If "LIB" is selected, the default battery values are suitable for a lithium ion battery without communication. The battery charging voltage and the low DC cut-off voltage can be set in Programs 26, 27, and 29. |
- Set the C.V (charging voltage) to the maximum BMS charging voltage minus 0.5V.
| 26 | Set the total charging voltage (C.V. Voltage) to the maximum BMS charging voltage minus 0.5V. | If "Self-defined" is selected in Program 05, this can be configured. The setting value must be equal to or greater than the value of Program 27. The increment per press is 0.1V. 12V model: Default value is 14.1V. Setting range is from 12.0V to 15.5V. 24V models: Default value is 28.2V, setting range is from 24.0V to 30.0V. 48V models: Default value is 56.4V, setting range is from 48.0V to 62.0V. |
|---|
- Set the float charging voltage to be the same as the AC voltage.
| 27 | Float Charging Voltage | If "Self-defined" is selected in Program 05, this can be configured. 12V model: Default setting: 13.5V. The setting range is from 12.0V to the value of Program 26. 24V models: Default setting is 27.0V. The setting range is from 24.0V to the value of Program 26. 48V models: Default setting is 54.0V. The setting range is from 48.0V to the value of Program 26. |
|---|
- Set the low DC cut-off voltage to be no less than the BMS discharge protection voltage plus 2V.
| 29 | Low DC Cut-off Voltage | If "Self-defined" is selected in Program 05, this value can be configured. The setting value must be less than the value of Program 12. The increment per press is 0.1V. The low DC cut-off voltage will be set according to the set value, regardless of the connected load. Default settings and ranges: 12V models: default setting is 10.5V 24V models: default setting is 21.0V. The setting range is from 20.0V to 27.0V. 48V models: default setting is 42.0V. The setting range is from 40.0V to 54.0V. |
|---|
- Set the maximum charging rate to be less than the maximum charging rate specified by the BMS.
| 02 | Max Charging Current: set the total charging current of solar and mains chargers. Max charging current = mains charging current + solar battery charging current. |
60 A (default) | If selected, the allowable charging current range will be from 1 to the maximum SPEC charging current, but it should not be lower than the AC charging current (Program 11). |
|---|
- Set the voltage setting point for returning to the power source when "SBU priority" or "Solar first" is selected in Program 01. The setting value must be greater than or equal to the low DC cut-off voltage plus 1V. Otherwise, the inverter will display a low battery voltage warning.
| 12 | Voltage setting point to return to power source when "SBU priority" or "Solar first" is selected in Program 01. | 48V models: default setting is 46V. The setting range for the 48V model is from 44.0V to 57.2V, but the maximum setting value must be less than the value specified in Program 13. |
|---|---|---|
| 24V models: default setting is 23V. The setting range for the 24V model is from 22.0V to 28.6V, but the maximum setting value must be less than the value specified in Program 13. | ||
| 12V models: 11.5V (default setting). The setting range is from 11.0V to 14.3V for the 12V model, but the maximum setting value must be less than the value specified in Program 13. |
Notes: It is best to perform the settings without turning on the inverter (let the LCD display information only, not generate output). After completing the settings, turn the inverter back on.
Error Codes
| Error Code | Description | Icon |
|---|---|---|
| 01 | Inverter module overheats | |
| 02 | DCDC module overheats | Icon with error number |
| 03 | Battery voltage too high | |
| 04 | Photovoltaic module overheats | |
| 05 | Output short circuit | |
| 06 | Output overvoltage | |
| 07 | Overload - shutdown time | |
| 08 | Bus voltage too high | |
| 09 | Bus soft start failure | |
| 10 | PV current overload | |
| 11 | PV overvoltage | |
| 12 | DCDC current overload | |
| 13 | Current overload or overvoltage | |
| 14 | Bus voltage too low | |
| 15 | Inverter fault | |
| 18 | OP compensation current is too high | |
| 19 | Inverter offset current is too high | |
| 20 | DC/DC compensation current is too high | |
| 21 | PV compensation current is too high | |
| 22 | Output undervoltage | |
| 23 | Negative inverter power |
Warning Indicator
| Code | Message | Alarm Sound | Display Icon |
|---|---|---|---|
| 02 | Over temperature | Three beeps every second | Image 78 |
| 04 | Battery discharged | One beep every second | Image 79 |
| 07 | Overload | One beep every 0.5 seconds | Image 80 |
| 10 | Output reduced | Two beeps every 3 seconds | Image 81 |
| 14 | Fan blocked | None | Image 82 |
| 15 | Low PV power | Two beeps every 3 seconds | Image 83 |
| 19 | Failed to communicate with lithium battery | Beep every 0.5 seconds | Image 84 |
| 21 | Lithium battery output current too high | None | Image 85 |
| E9 | Battery equalization | None | Image 86 |
| bP | Battery not connected | None | Image 87 |
Specifications
Table 1. Line Mode Specifications
| Inverter Model | 1.5 KVA | 1.5KVA | 2.5KVA | 3.5KVA | 5.5KVA |
|---|---|---|---|---|---|
| Input Voltage Waveform | Sine (Mains or Generator) | ||||
| Nominal Input Voltage | 230 VAC | ||||
| Low Loss Voltage | 170 VAC ± 7V (Higher Voltage) 90V AC ± 7V (Appliance) |
||||
| Voltage at Low Loss | 180 VAC ± 7V (Higher Voltage) 100 VAC ± 7V (Appliance) |
||||
| High Loss Voltage | 280 VAC ± 7V | ||||
| Return Voltage at High Loss | 270 VAC ± 7V | ||||
| Max. AC Input Voltage | 300 VAC | ||||
| Nominal Input Frequency | 50 Hz / 60 Hz (Auto-sensing) | ||||
| Frequency at Low Loss | 40 ± 1 Hz | ||||
| Return Frequency at Low Loss | 42 ± 1 Hz | ||||
| High Loss Frequency | 65 ± 1 Hz | ||||
| Return Frequency at High Loss | 63 ± 1 Hz | ||||
| Output Short Circuit Protection | Battery Mode: Electronic Circuit | ||||
| Efficiency (Line Mode) | >95% (at rated load R, fully charged battery) | ||||
| Switching Time | 10 ms typical (UPS) 20 ms (Appliance) |
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| Output Power Limit: When AC input voltage drops to 95V or 170V, depending on the model, the output power is limited. | |||||
Table 2. Specifications - Inverter Mode
| Inverter Model | 1.5 KVA | 1.5KVA | 2.5KVA | 3.5KVA | 5.5KVA |
|---|---|---|---|---|---|
| Rated Output Power | 1.5KVA/1.5KW | 2.5KVA/2.5KW | 3.5KVA/3.5KW | 5.5KVA/5.5KW | |
| Output Voltage Waveform: | Sine | ||||
| Output Voltage Regulation: | 230Vac ± 5% | ||||
| Output Frequency: | 50 Hz or 60 Hz | ||||
| Max. Efficiency: | 94% | ||||
| Peak Capability: | 2* Rated Power for 5 seconds | ||||
| Nominal DC Input Voltage: | 12 Vdc | 24 Vdc | 48 Vdc | ||
| Cold Start Voltage: | 11.0 Vdc | 23.0 Vdc | 46.0 Vdc | ||
| DC Low Voltage Warning (AGM & Flooded only) | @ Load < 20%: 11.0 Vdc @ 20% ≤ Load < 50%: 10.7 Vdc @ Load ≥ 50%: 10.1 Vdc |
22.0 Vdc 21.4 Vdc 20.2 Vdc |
40.4 Vdc 42.8 Vdc 44.0 Vdc |
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| Return Voltage after Low DC Warning (AGM & Flooded only) | @ Load < 20%: 11.5 Vdc @ 20% ≤ Load < 50%: 11.2 Vdc @ Load ≥ 50%: 10.6 Vdc |
23.0 Vdc 22.4 Vdc 21.2 Vdc |
42.4 Vdc 44.8 Vdc 46.0 Vdc |
||
| Low DC Cut-off Voltage (AGM & Flooded only) | @ Load < 20%: 10.5 Vdc @ 20% ≤ Load < 50%: 10.2 Vdc @ Load ≥ 50%: 9.6 Vdc |
21.0 Vdc 20.4 Vdc 19.2 Vdc |
42.0 Vdc 40.8 Vdc 38.4 Vdc |
||
Table 3. Specifications - Charging Mode
| Mains Charging Mode | |||||
|---|---|---|---|---|---|
| Model | 1.5 KVA | 1.5KVA | 2.5KVA | 3.5KVA | 5.5KVA |
| Max. Charging Current (PV+AC) (@ VI/P=230Vac). | 100 Amp | 60Amp | 100Amp | 100Amp | 100Amp |
| Max. Charging Current (AC) (@ VI/P=230Vac). | 60Amp | ||||
| Bulk Charging Voltage | Flooded Batteries | 14.6 Vdc | 29.2 VDC | 58.4 VDC | |
| AGM/GEL BATTERY | 14.1 Vdc | 28.2 VDC | 56.4 VDC | ||
| Float Charging Voltage | 13.5 Vdc | 27VDC | 54VDC | ||
| Overcharge Protection | 16.5Vdc | 32VDC | 63VDC | ||
| Charging Algorithm | 3 Stage | ||||
| Charging Curve | Image 89 | ||||
| Solar Input | |||||
| Model | 1.5 KVA | 1.5KVA | 2.5KVA | 3.5KVA | 5.5KVA |
| Rated Power | 2000W | 2000W | 3000W | 4000W | 5500W |
| Max PV Array Open Circuit Voltage | 500 Vdc | ||||
| PV Array MPPT Voltage Range | 30Vdc to 500Vdc | 60Vdc to 500Vdc | |||
| Max Output Current | 15 A | 15 A | 15 A | 15 A | 18 A |
| Max Charging Current (PV) | 100 A | 60 A | 100 A | 100 A | 100 A |
Table 4. Operating Parameters
| Model | 1.5 KVA | 2.5 KVA | 3.5KVA | 5.5KVA |
|---|---|---|---|---|
| Operating Temperature Range | -10°C to 55°C | |||
| Storage Temperature | -15°C to 60°C | |||
| Humidity | 5% to 95% (Non-condensing) | |||
Troubleshooting
| Problem | LCD / LED / Buzzer | Possible Cause | Solution |
|---|---|---|---|
| Unit automatically shuts down during the power-on process. | LCD/LED display and buzzer will be active for 3 seconds, then completely shut down. | Battery voltage is too low | Recharge the battery. Replace the battery. |
| No response when power is turned on. | None | Battery voltage is too low. Battery polarity is reversed. | Check if batteries and cables are connected correctly. Recharge the battery. Replace the battery pack. |
| Power is on, but the unit operates in battery mode. | Input voltage is displayed as 0 on LCD, and the green LED flashes. | Overcurrent or input voltage protection is enabled | Check if the AC breaker is turned off and if the AC wires are connected correctly. |
| Green LED flashes. | Poor AC power quality (from mains or generator) | Check if AC wires are too thin and/or too long. Check if the generator is operating properly (if used) or if the input voltage range settings are correct. (UPS → Appliance) | |
| Green LED flashes. | Set "Solar First" as the output source priority | Change the output source priority to "Utility first". | |
| When the unit is turned on, the internal relay repeatedly turns on and off. | LCD display and LEDs flash. | Battery is disconnected | Check if the battery cables are connected properly. |
| Continuous beeping sound and red LED is on. | Error code 07 | Overload error. The inverter is overloaded by 110% and the time is up. | Reduce the load by turning off some appliances. |
| Error code 05 | Output short circuit. | Check if the wires are connected correctly and remove the abnormal load. | |
| Error code 02 | The internal temperature of the inverter components exceeds 100°C. | Check if the airflow in the unit is blocked or if the ambient temperature is too high. | |
| Error code 03 | Battery overcharged | Contact the maintenance center. | |
| Battery voltage is too high. | Check if the battery specification and quantity meet the requirements. | ||
| Error code 06/22 | Improper output (inverter voltage is lower than 190 Vac or higher than 260 Vac). | Reduce the load. Contact the maintenance center. | |
| Error code 08/09/15 | Internal components have failed. | Contact the maintenance center. | |
| Error code 13 | Current overload or overvoltage. | Turn the unit on again. If the error persists, contact the maintenance center. | |
| Error code 14 | Bus voltage too low. | ||
| Other error code | If the cables are connected correctly, contact the maintenance center. |
Maintenance
- Keep the VALVATOR clean using a soft, dry cloth to remove dust and dirt. Do not use chemicals.
- Regularly check the power cords and connections for damage, such as scratches, cracks, or loose connections.
- Ensure that the ventilation openings are clean and unobstructed to ensure proper cooling.
- Avoid contact with water or other liquids to prevent electrical damage.
Disposal
This product is subject to the Waste Electrical and Electronic Equipment (WEEE) regulations. Take it to an electronics waste collection point that ensures safe recycling in accordance with GPSR standards. Check for the nearest electronics waste collection points. If you have any questions regarding disposal, please contact the manufacturer or an authorized service center at .
Warranty and Service Information
The manufacturer provides a 24-month warranty from the date of product purchase. The warranty covers any defects in materials and workmanship. In case of any problems with the unit, please contact our service department for prompt and professional service. The warranty does not cover damage resulting from misuse, drops, mechanical damage, unauthorized repairs, or attempts to disassemble the unit.
