1. Product Overview
The Hoymiles HMS-1800-4T is a high-performance microinverter designed for solar power systems, particularly suitable for balcony power plants. It is capable of connecting to four solar modules, offering independent Maximum Power Point Tracking (MPPT) and monitoring functions to maximize energy yield. Its robust design and advanced features ensure efficient and reliable operation.
Figure 1: Front view of the Hoymiles HMS-1800-4T Microinverter, showing its robust casing and connection ports.
Key Features:
- High Output Power: Up to 1800 VA continuous output power, suitable for various solar panel configurations.
- 4-in-1 Design: Connects to four solar modules, simplifying installation and reducing system costs.
- Independent MPPT: Each module benefits from independent MPPT, ensuring optimal power generation even under partial shading or varying module performance.
- Integrated Monitoring: Compatible with Hoymiles S-Miles Cloud for comprehensive system monitoring and data analysis.
- Robust and Safe: Features an IP67-rated enclosure for outdoor use, quick shutdown capability, and an isolated transformer for enhanced safety.
- Sub-1G Communication: Provides stable and reliable communication for monitoring and control.
2. Safety Instructions
Please read all instructions and warnings in this manual carefully before installing, operating, or maintaining the Hoymiles HMS-1800-4T Microinverter. Failure to follow these instructions may result in electric shock, fire, serious injury, or death, and may void the warranty.
- Qualified Personnel: Installation and maintenance must be performed by qualified personnel only.
- Electrical Safety: Always disconnect the microinverter from both DC (solar panels) and AC (grid) power sources before performing any work.
- Grounding: Ensure the microinverter is properly grounded according to local electrical codes.
- Environmental Conditions: Do not install the microinverter in environments with explosive gases, flammable materials, or corrosive substances.
- Damage Inspection: Inspect the microinverter for any damage before installation. Do not install a damaged unit.
- Ventilation: Ensure adequate ventilation around the microinverter to prevent overheating.
3. Installation
3.1 Package Contents
Verify that all components are present and undamaged:
- Hoymiles HMS-1800-4T Microinverter
- Mounting hardware (screws, washers, nuts) - (Note: AC cables for 230V connection are not included and must be purchased separately.)
- Documentation (this manual)
3.2 Mounting Location
Choose a mounting location that meets the following criteria:
- Accessibility: Easily accessible for maintenance and inspection.
- Ventilation: Good airflow for natural convection cooling. Avoid enclosed spaces.
- Protection: Protected from direct sunlight if possible, though the unit is designed for outdoor use (IP67).
- Structural Integrity: A sturdy surface capable of supporting the microinverter's weight (4.7 kg).
- Temperature Range: Within the ambient temperature range of -40°C to +65°C.
3.3 Mounting the Microinverter
- Attach the microinverter to the desired mounting surface using the provided mounting hardware. Ensure it is securely fastened.
- Maintain adequate clearance around the unit for proper heat dissipation.
3.4 Electrical Connections
WARNING: Ensure all power sources are disconnected before making electrical connections.
- DC Connection (Solar Panels):
- Connect the DC cables from each solar module to the corresponding input ports on the microinverter. The HMS-1800-4T has four DC inputs.
- Ensure correct polarity (+ to + and - to -).
- Verify that the solar panel voltage and current are within the microinverter's specifications (Max. Input Voltage: 65V DC, MPPT Voltage Range: 16-60V DC, Max. Input Current: 4 x 15A DC).
- AC Connection (Grid):
- Connect the AC output cable from the microinverter to your home's electrical grid or a dedicated balcony power plant circuit.
- Ensure the AC connection is properly grounded.
- The microinverter's nominal output voltage is 230/240V AC.
Figure 2: Product label detailing electrical specifications and certifications, essential for correct installation.
4. Operation
4.1 Starting the System
- Once all electrical connections are secure, turn on the AC circuit breaker connected to the microinverter.
- Next, ensure the solar panels are exposed to sufficient sunlight.
- The microinverter will automatically start operating when the DC input voltage reaches the start-up voltage (22V DC) and sufficient power is available from the solar panels.
- Allow a few minutes for the microinverter to initialize and begin power conversion.
4.2 Monitoring
The Hoymiles HMS-1800-4T Microinverter can be monitored using the Hoymiles S-Miles Cloud monitoring system. This requires a Hoymiles Gateway DTU (Data Transfer Unit), which is sold separately.
- Connect the DTU to your home network and position it within range of the microinverter's Sub-1G communication signal.
- Register your system on the S-Miles Cloud platform.
- Through the S-Miles Cloud, you can monitor real-time power production, historical data, and system status for each individual module.
5. Maintenance
The Hoymiles HMS-1800-4T Microinverter is designed for minimal maintenance. However, regular checks can ensure optimal performance and longevity.
- Visual Inspection (Quarterly):
- Check for any visible damage to the microinverter casing, cables, or connectors.
- Ensure all connections are secure and free from corrosion.
- Verify that the mounting is still secure.
- Cleaning (Annually or as needed):
- Gently clean the exterior of the microinverter with a soft, damp cloth to remove dust or debris.
- Do not use abrasive cleaners or solvents.
- Ensure the cooling fins are clear of obstructions.
- Performance Monitoring: Regularly check the system's performance via the S-Miles Cloud to identify any drops in power production that might indicate an issue.
WARNING: Do not attempt to open or repair the microinverter. Refer all servicing to qualified personnel.
6. Troubleshooting
This section provides basic troubleshooting steps for common issues. For more complex problems, contact Hoymiles technical support.
| Problem | Possible Cause | Solution |
|---|---|---|
| No power output |
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| Low power output |
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| Monitoring data not updating |
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7. Specifications
Detailed technical specifications for the Hoymiles HMS-1800-4T Microinverter.
Figure 3: Detailed technical data table for the HMS series microinverters, highlighting the HMS-1800-4T specifications.
| General Specifications | |
|---|---|
| Model Name | HMS-1800-4T |
| Brand | Hoymiles |
| Product Type | Microinverter for four solar modules |
| Dimensions (H x W x D) | 331 x 218 x 40.6 mm (53.2 x 28.1 x 5.1 cm packaged) |
| Weight | 4.7 kg |
| Enclosure Protection | IP67 (NEMA 6) |
| Cooling | Natural Convection (No Fan) |
| Ambient Temperature Range | -40°C to +65°C |
| Communication | Sub-1G |
| Monitoring System | S-Miles Cloud (via DTU) |
| DC Input Data | |
| Recommended Module Power | 360 to 600+ W |
| Max. Input Voltage | 65 V DC |
| MPPT Voltage Range | 16 - 60 V DC |
| Start-up Voltage | 22 V DC |
| Max. Input Current | 4 x 15 A DC |
| Max. Input Short Circuit Current | 4 x 25 A DC |
| Number of MPPTs | 4 |
| Number of Inputs per MPPT | 1 |
| AC Output Data | |
| Nominal Output Power | 1800 VA |
| Nominal Output Current | 7.83 A AC |
| Nominal Output Voltage / Range | 230 / 240 V AC (180 - 275 V AC) |
| Nominal Frequency | 50 / 60 Hz (Adjustable) |
| Power Factor | >0.99 (Default), 0.8 leading...0.8 lagging |
| Total Harmonic Distortion (THD) | < 3% |
| Max. Units per 10-AWG String | 4 |
| Efficiency | |
| CEC Peak Efficiency | 96.5% |
| MPPT Nominal Efficiency | 99.8% |
| Night Power Consumption | < 50 mW |
| Compliance | |
| Certifications | EN 50549-1:2019, VDE-AR-N 4105:2018, VFR2019, IEC/EN 62109-1/-2, IEC/EN 61000-6-1/-2/-3/-4, IEC/EN 61000-3-2/-3 |
8. Warranty and Support
8.1 Warranty Information
Hoymiles microinverters are built to high-quality standards and come with a manufacturer's warranty. Please refer to the official Hoymiles website or your purchase documentation for specific warranty terms and conditions applicable to the HMS-1800-4T model.
Typically, the warranty covers defects in materials and workmanship under normal use and service conditions. Keep your proof of purchase for warranty claims.
8.2 Technical Support
For technical assistance, troubleshooting beyond this manual, or warranty claims, please contact Hoymiles customer support:
- Hoymiles Official Website: www.hoymiles.com
- Contact Information: Refer to the "Contact Us" section on the official website for regional support numbers or email addresses.
When contacting support, please have your microinverter's model number (HMS-1800-4T) and serial number ready. The serial number can be found on the product label (see Figure 2).
