How to fix over temperature protection on Hoymiles Inverter?
First, check the ventilation and ambient temperature at the microinverter's installation location. If ventilation is poor or the ambient temperature exceeds the limit, improve ventilation and heat dissipation. If both ventilation and ambient temperature meet the requirements, contact your dealer or Hoymiles technical support.
Why is my Hoymiles Inverter showing 'Rapid grid frequency change rate'?
If the alarm occurs accidentally, the grid frequency may be abnormal temporarily. The microinverter can recover automatically after grid frequency becomes normal. If the alarm occurs frequently, check whether the grid frequency change rate is within the acceptable range. If not, contact the local power operator or change the grid frequency change rate limit via Hoymiles monitoring system with the consent of the local power operator.
What should I do if my Hoymiles Inverter displays a grid underfrequency error?
If the alarm occurs accidentally, the grid frequency may be abnormal temporarily. The microinverter can recover automatically after grid frequency becomes normal. If the alarm occurs frequently, check whether the grid frequency is within the acceptable range. If not, contact the local power operator or change the grid underfrequency protection limit via Hoymiles monitoring system with the consent of the local power operator.
What to do if Hoymiles Inverter shows grid overfrequency?
If the alarm occurs accidentally, the grid frequency may be temporarily abnormal. The microinverter can recover automatically after the grid frequency becomes normal. If the alarm occurs frequently, check whether the grid frequency is within the acceptable range. If not, contact the local power operator or change the grid overfrequency protection limit via the Hoymiles monitoring system with the consent of the local power operator.
What should I do if my Hoymiles Inverter displays a grid undervoltage error?
If the alarm occurs once, the grid voltage may be temporarily abnormal. The microinverter should recover automatically once the grid voltage returns to normal. If the alarm occurs frequently, check whether the grid voltage is within the acceptable range. If not, contact the local power operator or change the grid overvoltage protection limit via the Hoymiles monitoring system with the consent of the local power operator.
What does it mean when my Hoymiles Inverter shows '10 min value grid overvoltage'?
If this alarm appears once, it might indicate a temporary issue with the grid voltage. The microinverter should automatically recover when the grid voltage stabilizes. However, if the alarm is frequent, you should check if the grid voltage is within the normal range. If it is not, contact your local power operator or, with their consent, adjust the grid overvoltage protection limit using the Hoymiles monitoring system.
What to do if my Hoymiles Inverter reports grid overvoltage?
If the alarm occurs accidentally, it's possible the grid voltage is temporarily abnormal; the microinverter should recover automatically once the voltage returns to normal. However, if the alarm occurs frequently, verify that the grid voltage is within the acceptable range. If it's not, contact your local power operator or, with their consent, adjust the grid overvoltage protection limit via the Hoymiles monitoring system.
What to do if my Hoymiles Inverter is offline?
First, ensure the microinverter is functioning correctly. Then, check the communication status between the DTU and the Hoymiles monitoring system, or between the DTU and the microinverter. If the communication is poor, try to improve it. If the alarm occurs frequently and cannot be resolved, it's recommended to contact your dealer or Hoymiles technical support.
General| Type | Microinverter |
|---|---|
| Output Power | 1800W |
| Cooling Method | Natural Convection |
| Enclosure Rating | IP67 |
| Model | HMT-1800 |
| Product Name | Hoymiles Microinverter |
| Input Voltage Range | 16-60V |
| MPPT Voltage Range | 16-60V |
| Rated AC Output Voltage | 230V |
| AC Output Frequency | 50/60Hz |
| Operating Temperature Range | -40°C to +65°C |
| Ambient Temperature Range | -40°C to +65°C |
Details the range of Hoymiles Three-Phase Microinverters covered by this manual.
Lists the necessary accessories for the microinverter system.
Specifies the intended audience for this user manual, focusing on qualified technicians.
Explains the meaning of symbols used throughout the manual for safety and warnings.
Provides information regarding the device's compliance with radio interference regulations.
Crucial safety precautions for installation, operation, and maintenance of the microinverter.
Details the safety symbols and their meanings, including danger, caution, and CE mark.
Introduction to the three-phase microinverter system and its application in solar energy.
Explanation of Sub-1G wireless technology and its benefits for PV systems.
Key features and advantages of the Hoymiles three-phase microinverter.
Identification and description of the different terminals on the microinverter unit.
Provides the physical dimensions and specifications of the microinverter.
Information on compatible photovoltaic (PV) modules for the HMT series microinverters.
Details the AC branch circuit capacity for different models based on cable gauge.
Guidelines for the correct positioning and necessary clearance for microinverter installation.
Lists and describes the required accessories for microinverter installation.
Steps to prepare for the microinverter installation, including cable planning.
Step-by-step instructions for physically installing the microinverter and making connections.
A comprehensive list of alarm codes, their names, and suggested solutions for common issues.
Explanation of the LED indicator states and what they signify during operation.
Procedures for diagnosing and troubleshooting inoperable microinverters on-site.
Guidelines for regular maintenance tasks to ensure optimal performance and longevity.
Instructions on how to safely remove and replace a faulty microinverter unit.
Procedures for safely disconnecting and removing the microinverter from the system.
Guidelines for proper storage and transportation of microinverter components.
Instructions for the environmentally responsible disposal of the microinverter and its parts.
Specifications related to the direct current (DC) input parameters of the microinverter.
Technical specifications for the alternating current (AC) output of the microinverter.
Data on efficiency, safety features, and protection mechanisms of the microinverter.
Physical and mechanical specifications including dimensions, weight, and enclosure rating.
Key features such as communication, monitoring, warranty, and compliance certifications.
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