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About the Manual This manual contains important instructions for the HM-300NT/HM-350NT/HM-400NT Microinverter and must be read in its entirety before installing or commissioning the equipment. For safety, only qualified technician, who has received training or has demonstrated skills can install and maintain this Microinverter under the guide of this document.
2. About Safety 2.1 Important Safety Instructions The HM-300NT/HM-350NT/HM-400NT Microinverter is designed and tested according to iernational safety requirements. However, certain safety precautions must be taken when installing and operating this inverter. The installer must read and follow all instructions, cautions and warnings in this...
Ø Do not use the equipment if any operating anomalies are found. Avoid temporary repairs. Ø All repairs should be carried out using only qualified spare parts, which must be installed in accordance with their intended use and by a licensed contractor or authorized Hoymiles service representative.
HM-300NT/HM-350NT/HM-400NT Hoymiles Single unit Microinverter HM-300NT/HM-350NT/HM-400NT is the perfect selection for PV system with uneven number of panels with world’s NO.1 CEC weighted efficiency – 96.50% (peak efficiency 96.70%) in 2015. 3.2 Highlights Peak output power up to 300W/350W/400W; Adapted to 60 & 72 cells PV panels.
C) Hang the microinverter on the screw (shown as picture below), and tighten the screw.The silver cover side of the Microinverter should be facing the panel. *Note: Please install the microinverter at least 50cm above the ground/roof for better communication with Hoymiles DTU.
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DTU and microinverter. Then try Firmware error again. 3. If the fault still exists, contact your dealer or Hoymiles technical support. 1. If the alarm occurs accidentally and the microinverter can still work Software error code normally, no special treatment is required.
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2. If the alarm occurs frequently, check whether the grid frequency change rate change rate is within the acceptable range. If no, 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. Power grid outage Please check whether there is a power grid outage.
ü Flashing Red and Green alternately: Firmware is corrupted. *Note: All the faults are reported to the DTU, refer to the local APP of the DTU or Hoymiles Monitoring Platform for more information. 6.3 On-site Inspection (For qualified installer only) To troubleshoot an inoperable microinverter, follow the steps in the order shown.
HM-300NT/HM-350NT/HM-400NT 7.2 Storage and Transportation Hoymiles packages and protects individual components using suitable means to make the transport and subsequent handling easier. Transportation of the equipment, especially by road, must be carried out by suitable ways for protecting the components (in particular, the electronic components) from violent, shocks, humidity, vibration, etc.
The HM-300NT/HM-350NT/HM-400NT Microinverter is a grid support interactive inverter, which is also known as a Grid Support Utility Interactive Inverter. And these microinverters also comply with California Rule 21. The Grid Support Support functions are controlled on Hoymiles Monitoring Platform and the DTU is required in this PV system.
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