1. Introduction
This document serves as the instruction manual for the Y&H Hybrid Solar Inverter, available in 4.2KW and 6.2KW models. This multi-function inverter/charger integrates the capabilities of an inverter, solar charger, and battery charger to provide reliable, uninterruptible power support. Its user-friendly LCD display and accessible buttons allow for easy configuration of settings such as battery charging current, AC/solar charger priority, and acceptable input voltage, adapting to various application needs.
2. Important Safety Notes
Do not turn on each input at the same time. It is recommended to allow 3 minutes for the inverter to stabilize after each input connection.
Inverter Startup Sequence:
- Connect the Battery.
- Connect AC input or PV input.
- Connect the Load.
Inverter Shutdown Sequence:
- Disconnect the Load.
- Disconnect AC input or PV input.
- Turn off the inverter and disconnect the battery.
Critical Warnings:
- In utility bypass mode, the device cannot be connected to two-phase 220V AC (i.e., L1-L2 cannot be connected to L-N).
- In inverter mode, if the device is connected to two-phase 220V, do not select utility priority for the output priority to avoid safety hazards.
- Do not connect the AC output of the device to an autotransformer, as this may affect the normal service life of the device.
- This inverter provides a single-phase/hot leg 230V output and cannot output 110V AC directly.
- This Y&H off-grid solar inverter all-in-one does not support parallel operation and does not support phase separation.
3. Setup and Installation
3.1. Port Introduction
Familiarize yourself with the inverter's ports and controls:
Description of Ports and Controls:
- 1. LCD Display: Shows system data and operating status.
- 2. Status Indicator: Indicates the current operational status.
- 3. Charging Indicator: Shows the charging status.
- 4. Fault Indicator: Alerts to system faults.
- 5. Function Buttons: For user configuration and navigation.
- 6. AC Input: Connection point for AC utility power.
- 7. Main Output: Primary AC output for connected loads.
- 8. Second Output: Secondary AC output for connected loads.
- 9. Battery Input: Connection terminals for the battery bank.
- 10. PV Input: Connection terminals for solar panels.
- 11. Anti Dust Kit: Helps protect internal components from dust.
3.2. Wiring and Technical Specifications
Proper wiring is crucial for safe and efficient operation. Refer to the diagrams below for connection details for both 6.2KW and 4.2KW models.
6.2KW Model Wiring Diagram:
6.2KW Model Wiring Details:
- Max AC Input Voltage: 300Vac
- Charging Current: 100A
- Suggested AC Input Cable: 10AWG
- Recommended AC Input Breaker: 50A
- PV Power: 6500W
- Max. PV Open Circuit Voltage: 500V
- PV MPPT Voltage Range: 60V-450VDC
- PV Start-up Voltage (initial charging): >90V
- Suggested PV Cable: 12AWG
- AC Output Power: 6200W
- AC Output Voltage: 230Vac
- Suggested AC Output Cable: 10AWG
- Recommended AC Output Breaker: 50A
- Battery Type: Lead-Acid (Seal, AGM, Gel, Flooded) and Lithium battery
- Battery Voltage: 48V
- Battery Wire Size: 2AWG (25mm²)
- Wiring Legend: Live wire/Positive wire (red), Neutral wire/negative wire (black), Earth (wire) (green).
Note: The output of the inverter is 230V. A converter (not included) is required for 110V appliances.
4.2KW Model Wiring Diagram:
4.2KW Model Wiring Details:
- Max AC Input Voltage: 300Vac
- Charging Current: 100A
- Suggested AC Input Cable: 10AWG
- Recommended AC Input Breaker: 50A
- PV Power: 6200W
- Max. PV Open Circuit Voltage: 500V
- PV MPPT Voltage Range: 60V-450VDC
- PV Start-up Voltage (initial charging): >90V
- Suggested PV Cable: 12AWG
- AC Output Power: 4200W
- AC Output Voltage: 230Vac
- Suggested AC Output Cable: 10AWG
- Recommended AC Output Breaker: 32A
- Battery Type: Lead-Acid (Seal, AGM, Gel, Flooded) and Lithium battery
- Battery Voltage: 24V
- Battery Wire Size: 2AWG (25mm²)
- Wiring Legend: Live wire/Positive wire (red), Neutral wire/negative wire (black), Earth (wire) (green).
Note: The output of the inverter is 230V. A converter (not included) is required for 110V appliances.
3.3. Battery Compatibility
The inverter supports various battery types including Lead-Acid (Sealed, AGM, Gel, Flooded) and Lithium batteries. For Lithium Battery BMS Communication, the Battery BMS must be PylonTech.
3.4. Wi-Fi Communication
The inverter features Wi-Fi communication, allowing you to monitor its operation remotely via an app on your iOS or Android device.
4. Operating Modes
4.1. Charging Modes
The inverter offers four distinct charging modes to optimize energy use:
- CSO Solar First: Prioritizes solar power for charging.
- Utility First: Prioritizes utility grid power for charging.
- SNU Solar and Utility (Default): Uses both solar and utility power for charging, with solar as the primary source.
- OSO Only Solar: Charges exclusively from solar power.
4.2. Discharge Modes
The inverter provides three discharge modes to manage power distribution:
- SUB Solar First (Default): Prioritizes solar power for loads.
- USB Utility First: Prioritizes utility grid power for loads.
- SBU Priority: Prioritizes solar, then battery, then utility for loads.
4.3. Dual Load Output Power
The inverter is equipped with dual load outputs. The behavior of these outputs is dependent on battery voltage:
The main output port will stop working when the battery voltage falls below a user-defined set range. In this scenario, only the second output port will continue to function. The typical setting range for this cutoff is 20V - 23V.
5. Maintenance
The inverter features a built-in anti-dust kit designed to protect internal components from dust accumulation, contributing to its longevity and reliable operation in harsh environments. Regular visual inspection of the unit and its connections is recommended to ensure optimal performance and safety.
6. Troubleshooting and Protection
The Y&H Hybrid Solar Inverter incorporates comprehensive 360° protection features to safeguard the unit and connected systems:
- Short Circuit Protection: Prevents damage from short circuits.
- Over-Load Protection: Protects against excessive load demands.
- Over Charge Protection: Safeguards batteries from overcharging.
- Over Current Protection: Limits current to safe levels.
- Backfill Protection: Prevents reverse current flow.
- Over Voltage Protection: Protects against excessively high voltage.
- Under Voltage Protection: Protects against dangerously low voltage.
- Over-Temperature Protection: Shuts down the unit if internal temperatures become too high.
If a fault indicator illuminates, consult the LCD display for specific error codes and refer to the full product manual for detailed troubleshooting steps.
7. Specifications
| Feature | 4.2KW Model | 6.2KW Model |
|---|---|---|
| Model Number | MPS-VIII ECO 4.2KW- MPPT 120A | MPS-VIII ECO 6.2KW- MPPT 120A |
| Output Voltage Waveform | Pure Sine Wave | |
| Output Frequency | 50Hz/60Hz (Auto sensing) | |
| Peak Efficiency | 93% | |
| Nominal DC Input Voltage | 24Vdc | 48Vdc |
| Two Load Output Power (V2.0) | ||
| Full Load | 4200W | 6200W |
| Maximum Main Load | 4200W | 6200W |
| Maximum Second Load (Battery mode) | 1400W | 2066W |
| Main Load Cut Off Voltage | 26VDC | 52VDC |
| Main Load Return Voltage | 27VDC | 54VDC |
| MPPT Solar Charging Mode | ||
| Max. PV Array Power | 6200W | 6500W |
| Nominal PV Voltage | 240Vdc | 360Vdc |
| PV Array MPPT Voltage Range | 60Vdc~500Vdc | |
| Max. PV Array Open Circuit Voltage | 500Vdc | |
| Maximum Solar Charging Current | 120Amp | |
| Grid-Tie Operation (AC) | ||
| Nominal Output Voltage | 220/230/240 VAC | |
| Output Voltage Range | 195.5~253VAC | |
| Nominal Output Current | 18.2A | 27.0A |
| Power Factor Range | >0.99 | |
| Feed-in Grid Frequency Range | 49~51±1Hz | |
| Maximum Conversion Efficiency (Solar/AC) | 98% | |
| Off-Grid Operation (AC Input) | ||
| Start-up Voltage/Auto Restart Voltage | 120-140VAC / 180VAC | |
| Acceptable Input Voltage Range | 90-280VAC or 170-280VAC | |
| Maximum AC Input Current | 40A | 50A |
| Nominal Operating Frequency | 50/60Hz | |
| Surge Power | 8400W | 10000W |
| Battery Mode Output (AC) | ||
| Nominal Output Voltage | 220/230/240VAC | |
| Output Waveform | Pure sinewave | |
| Efficiency (DC to AC) | 94% | |
| Battery & Charger | ||
| Nominal Voltage | 24VDC | 48VDC |
| Maximum Solar Charging Current | 120A | |
| Maximum AC Charging Current | 100A | |
| Physical | ||
| Dimensions (D x W x H) | 420mm x 310mm x 110mm | |
| Net Weight | 8.9 kg | 9.8 kg |
| Gross Weight | 10.1 kg | 11 kg |
| Interface | ||
| Communication Port | RS232/GPRS/WIFI | |
| Environment | ||
| Operating Temperature | -10°C to 55°C | |
| Storage Temperature | -15°C to 60°C | |
| Humidity | 5% to 95% Relative Humidity (Non-condensing) | |
| Certification | CE | |
| Is Smart Device | Yes | |
8. User Tips
- Generator Connection: The wiring diagrams indicate a connection point for a generator. Ensure your generator's specifications are compatible with the inverter's AC input requirements (Max AC Input Voltage 300Vac, Charging Current 100A) before connecting. Always follow the correct startup and shutdown sequences when integrating a generator.
9. Warranty and Support
The Y&H Hybrid Solar Inverter comes with a 24-month warranty. For any technical assistance, warranty claims, or support inquiries, please contact the Y&H Flagship Store directly. Ensure you have your product model and purchase details ready for efficient service.
