Copyright Notice
Copyright 2025 Xi'an WANHEYUE Energy Technology Co., Ltd. All rights reserved. No part of this manual may be copied, extracted, or reproduced without the express permission of Xi'an wanheyue Energy Technology Co., Ltd. for dissemination or profit.
OneHo and other Wanhe Yueneng trademarks are trademarks of Xi'an Wanhe Yueneng Energy Technology Co., LTD. and other WANHEYUE trademarks. All trademarks mentioned herein belong to their respective owners. The contents of this manual are for reference only and are subject to change without prior notice. Unless otherwise agreed, this manual serves as a guide, and no warranties are implied.
Overview of the Manual
This manual covers safety precautions, product features, product storage, installation and connection, system activation, system monitoring, equipment maintenance, equipment replacement, and troubleshooting methods. To ensure optimal reliability and meet warranty requirements, please read this manual carefully before installing and using the equipment, and follow the instructions strictly.
Target Group
This booklet is intended for:
- Technical professionals (all installation and maintenance operations must be carried out by qualified technicians).
Sign Conventions
The following symbols may appear in the manual:
| Sign | Description |
|---|---|
| ⚠ 危险 (Danger) | An emergency is a dangerous situation that, if not avoided, will result in death, serious personal injury, or fire. |
| ⚠ 警告 (Warning) | A potentially dangerous situation that, if not avoided, may result in death or serious personal injury. |
| ⚠ 注意 (Caution) | Means a potentially dangerous situation that, if not avoided, may result in moderate or minor personal injury or equipment damage. |
| ℹ 说明 (Information) | It means to make necessary supplement and explanation to the content, and it doesn't involve personal and equipment injury. |
Version Records
Document Version 012025-03-11 for internal testing only.
1 Safety Precautions
Before installing or using this product, please read this user manual and all instructions and safety warning signs on the equipment and relevant safety manuals carefully. Failure to follow these instructions may result in equipment damage, warranty lapse, or even personal injury.
All operations, including transportation, installation, start-up, and maintenance, must be carried out by trained technicians. In addition to the contents of this manual, compliance with relevant international, national, or regional laws, regulations, standards, norms, and industry practices is required.
Please check that the equipment is in good condition before installation. If damaged, the insulation integrity or safety of the equipment may be affected. Before connecting a photovoltaic device to the grid, contact your local power company for approval.
The company is not responsible for consequences arising from:
- Failure to obtain permission from the national or regional power authority.
- Installation and operating environment not complying with relevant international, national, or regional standards.
- Failure to comply with local laws, regulations, and codes when operating and maintaining equipment.
- Installation and use of equipment by unqualified personnel.
- Failure to follow product and user manual instructions.
- Unauthorized disassembly, replacement of equipment, or modification of software code causing equipment damage.
- Damage caused by storage conditions that do not meet product documentation requirements.
- Self-provided parts and tools not meeting local laws, regulations, and relevant standards.
- Damage caused by negligence, improper handling, or willful intent.
- Equipment damage caused by force majeure, such as natural disasters, war, or armed conflict.
2 Product Introduction
2.1 OneHo Grid-Connected Photovoltaic System
The OneHo roof photovoltaic system consists of a micro-inverter, Gateway, and cloud monitoring platform. The system architecture is depicted in Figure 1.
Figure 1: Roof Photovoltaic System Diagram Description: This diagram illustrates a solar panel array connected via a micro-inverter to a gateway. The gateway communicates with a cloud platform, which is accessible via a web interface or a mobile application (App). The system uses PLC (Power Line Communication) for data transfer between the micro-inverter and the gateway.
Micro-inverter: The OneHo micro-inverter is part of the photovoltaic power generation system. It efficiently converts the DC output of the photovoltaic module to AC, meeting the requirements for household load or grid feed-in.
Gateway: The OneHo Gateway is a communication device that connects the operation data of the solar module and the micro-inverter to the cloud monitoring platform. It collects production and performance data of the micro-inverter via PLC power lines and uploads it to the network for remote monitoring and management.
Web monitoring platform: A web-based energy management portal allowing users to view PV system details, manage systems, and resolve system problems.
App: A mobile application for iOS and Android devices that enables users to view PV system performance data at any time.
2.2 Gateway EQ-MU-Pro
2.2.1 Product Features
The EQ-MU-Pro communicates with micro-inverters in the system through PLC Power Line, collecting all running data and status. It is also responsible for transmitting control commands to the micro-inverters to adjust system running states and facilitate system maintenance. One EQ-MU-Pro can be networked with up to 250 micro-inverters.
The EQ-MU-Pro supports Ethernet, WIFI, and 4G modes for internet connectivity, enabling information exchange with the WANHE cloud monitoring service platform. It sends running data and status of all micro-inverters to the WANHE Cloud Monitoring Server and receives system control commands and data from the server for remote operation and maintenance. It features real-time network status detection, automatic communication mode switching, prioritizing communication quality, reducing costs, and ensuring complete data upload.
After installing and networking the EQ-MU-Pro and micro-inverters, users can access the Web or APP to monitor and manage the device.
The EQ-MU-Pro communicates with the micro-inverter via PLC power lines on one side and with the cloud via wired or wireless networks on the other. The communication topology between EQ-MU-Pro and external devices is shown in Figure 2.
Figure 2: EQ-MU-PRO Communication Topology Diagram Description: This diagram illustrates the communication flow. A micro-inverter connects to the EQ-Gate (EQ-MU-Pro) via PLC over AC line. The EQ-Gate connects to the cloud (Web/App) via WIFI/Ethernet/4G (Server Mode) or directly to a home load via RS485 and a meter (Local Mode). The grid is also shown.
2.2.2 Appearance and Interfaces
Figure 3: EQ-MU-PRO Introduction to Appearance and Interfaces Diagram Description: This diagram shows the physical unit with callouts for: Status indicator lights, SIM card slot, 4G antenna interface, RESET button, Ethernet interface, USB reserved port, DRM reserved port, AC interface, and RS485 interface. It also shows the cover plate.
2.2.3 Product Dimensions
Figure 4: EQ-MU-PRO Size Chart Diagram Description: This diagram displays the dimensions of the EQ-MU-Pro unit: Length 174mm, Height 113mm, and Width 35mm. It shows the unit from the front, side, and bottom views.
3 Installation and Connection
⚠ Disconnect all electrical circuits before installing and repairing cables.
3.1 Install Equipment
3.1.1 Install Rail Buckles
Remove the guideway snap from the package and secure the snap to the equipment using matching screws. The reference torque is 0.7 ~ 0.9 N. M.
Figure 1: Schematic Diagram of Mounting Guide Rail Buckle Description: This diagram shows how to attach mounting rail buckles to the equipment using screws. It highlights the placement of the buckles and the screws.
3.1.2 Install EQ-MU-Pro
Mount the equipment buckle onto the C45 standard guide rail, as shown in the following picture.
Figure 2: Installation of EQ-MU-Pro Diagram Description: This diagram illustrates the EQ-MU-Pro unit being mounted onto a DIN rail. It shows the unit clipping onto the rail and details the electrical connections to terminals for AC power (L, N, PE), a meter, and a user acquisition device.
3.2 Electrical Connection
3.2.1 Wiring
Connect the L and N of the AC cable and the ground wire to the EQ-MU-Pro terminals as shown in the diagram. Connect the meter and the customer acquisition device.
Figure 3: Wiring Diagram Description: This diagram details the electrical connections. It shows the AC power input (L, N, PE) connected to the corresponding terminals on the EQ-MU-Pro. It also shows connections to a meter and a user acquisition device. A caution is noted that cable colors in the diagram are for differentiation and actual installation should follow local conditions.
⚠ Caution: The color of the cables in the picture is only for differentiation; please refer to the actual situation when installing.
3.2.2 Networking of Devices
Different networking methods require different wiring. Please choose the content according to your actual needs.
Ethernet: Using Ethernet requires a standard Ethernet cable of the appropriate length to connect the EQ-MU-Pro to your home router. The wiring is shown in Figure 4.
Figure 4: Diagram of Ethernet Connection Description: This diagram shows an Ethernet cable connecting the EQ-MU-Pro's Ethernet port to a router. It also illustrates the internal wiring connections to the unit's terminals.
⚠ Caution: The color of the cables in the picture is only for differentiation. Please install according to the local actual situation.
WIFI: For WIFI connectivity, install the EQ-MU-Pro within a 10m radius of the router to ensure signal strength.
Figure 5: Installation Distance Diagram Description: This diagram visually represents the recommended maximum distance of 10 meters for reliable WIFI connectivity between the EQ-MU-Pro and the router.
4G: For 4G connectivity, prepare a valid SIM card in advance and insert it correctly into the slot on the side of the device. Then install a 4G antenna.
Figure 6: 4G Installation Guide Diagram Description: This diagram shows the rear or side view of the EQ-MU-Pro, indicating the location for inserting the SIM card (with a note about chip orientation and notch) and the connection point for the 4G antenna.
4 Technical Specifications
Electrical Parameters
| Grid-connected settings | Single-phase |
| Rated voltage (V) | 220/230/240 |
| Operating voltage range (V) | 100 ~ 240 V AC |
| Frequency (Hz) | 50/60 |
| Overvoltage type | III |
| AC surge protection | Type II |
| Power consumption (W) | < 10 |
Communications
| Mode of communication | PLC, WIFI, 4G, Ethernet, RS485 |
| Max communication distance of PLC (m) | 1000 |
| Maximum WIFI transmission distance (m) | 50 |
| WIFI protocol | WIFI 4, IEEE 802.11 b/g/n |
| Maximum number of acquisition components | 250 |
| Acquisition Frequency (min) | 5/10/15 |
Mechanical Parameters
| Dimensions (length × width × height)(mm) | 174 x 113 x 35 |
| Weight (Kg) | 0.3 |
| Ambient temperature range (°C) | -40 ~ 60 |
| Cooling method | Natural heat dissipation |
| Working altitude (m) | 5000 |
| Level of protection | IP30 |
| Pollution levels | Level 3 |
Compliance
| Certification | CE, FCC, ISED, RCM, Anatel |
| EMC | IEC 61000-6-3, IEC 61000-4-3, EN 301489, IEC 61000-4-5, IEC 61000-4-8:2001, IEC 61000-4-2 |
FCC Statement
1. This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
- This device may not cause harmful interference.
- This device must accept any interference received, including interference that may cause undesired operation.
2. Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
To comply with RF exposure requirements, a minimum separation distance of 20cm must be maintained between the user's body and the device, including the antenna.