Hoymiles HYS-3.0LV-EUG1 User Manual

Hoymiles HYS-3.0LV-EUG1

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Open Energy for All

USER MANUAL

HYS-3.0LV-EUG1

HYS-3.6LV-EUG1

HYS-4.6LV-EUG1

HYS-5.0LV-EUG1

HYS-6.0LV-EUG1

HAS-3.0LV-EUG1

HAS-3.6LV-EUG1

HAS-4.6LV-EUG1

HAS-5.0LV-EUG1

Region: Global REV2.2 hoymiles.com

Hybrid/AC-coupled Inverter

Table of Contents

Questions and Answers:

L
Luke WeeksAug 25, 2025
What to do if Hoymiles HYS-3.0LV-EUG1 shows No Grid?
- B
  Brandon SmithAug 25, 2025
  If your Hoymiles inverter frequently indicates a 'No Grid' error, it means the inverter isn't detecting a grid connection. While the inverter typically reconnects automatically once the grid is restored, frequent alarms suggest: 1. Check if the grid supply is reliable. 2. Ensure the AC cable is firmly in place and correctly connected. 3. Verify that the AC circuit breaker is not disconnected. If the issue continues, consider contacting Hoymiles technical support.
S
susan55Aug 25, 2025
What to do if Hoymiles HYS-3.0LV-EUG1 Inverter shows Grid Undervoltage?
- T
  Timothy HollowayAug 26, 2025
  If the Hoymiles inverter frequently reports a grid undervoltage error, it means the grid voltage is lower than the permissible range. While the inverter should automatically reconnect once the grid voltage returns to normal, frequent alarms suggest: 1. Make sure the ESS safety configuration of the inverter is set correctly. 2. Make sure that the grid voltage in your area is stable and within the normal range. 3. Check whether the AC cable is firmly in place. If the problem persists, consider contacting Hoymiles technical support.
M
millerdustinAug 26, 2025
Why is my Hoymiles Inverter showing an RCD Fault?
- E
  Erica DavisAug 26, 2025
  An RCD fault on your Hoymiles inverter indicates that the residual leakage current is too high. This can be caused by high ambient humidity; the inverter should reconnect to the grid once the environment improves. If the environment is normal, check whether the AC and DC cables are well insulated. If the alarm persists, contact Hoymiles technical support team.
J
John PattonAug 27, 2025
What to do if Hoymiles HYS-3.0LV-EUG1 Inverter indicates Grid Overfrequency?
- J
  Jordan PerryAug 27, 2025
  If your Hoymiles inverter frequently reports a grid overfrequency error, it means the grid frequency is higher than the permissible range. While the inverter should automatically reconnect once the grid frequency returns to normal, frequent alarms suggest: 1. Ensure the ESS safety configuration of the inverter is correctly configured. 2. Ensure the grid frequency in your area is stable and within the normal range. If the problem persists, consider contacting Hoymiles technical support.
C
Crystal ThomasSep 7, 2025
Why is my Hoymiles HYS-3.0LV-EUG1 Inverter showing Relay Self-check Fault?
- L
  Laura DiazSep 7, 2025
  If your Hoymiles inverter detects a relay self-check fault, try to restart the inverter. If the fault persists, contact Hoymiles technical support team.
H
hunter93Sep 5, 2025
What does it mean if my Hoymiles HYS-3.0LV-EUG1 displays a BMS Battery Alarm?
- R
  Rachel FloydSep 5, 2025
  If your Hoymiles inverter detects a battery fault from BMS, try to restart the battery. If the fault persists, contact the battery manufacturer.
J
Jason FitzpatrickSep 6, 2025
What does it mean if my Hoymiles Inverter displays a BMS Battery Fault?
- K
  Katherine MendozaSep 6, 2025
  If your Hoymiles inverter detects a battery fault from BMS, try to restart the battery. If the fault persists, contact the battery manufacturer.
A
Amanda ChristensenSep 1, 2025
What to do if Hoymiles Inverter displays EPS Load Overpower?
- S
  samuelflemingSep 1, 2025
  If your Hoymiles inverter displays an EPS Load Overpower error, it means the EPS load power is higher than the permissible range. To resolve this, reduce the power of EPS loads, or remove some EPS loads. The inverter will restart automatically. If the alarm persists, contact Hoymiles technical support team.
C
cummingsbarbaraAug 30, 2025
What does it mean if my Hoymiles HYS-3.0LV-EUG1 displays a PV Overvoltage error?
- M
  mark99Aug 30, 2025
  A PV Overvoltage error on your Hoymiles inverter means the PV voltage is higher than the permissible range. Check the specification and numbers of corresponding string PV modules. If the alarm persists, contact Hoymiles technical support team.
I
iwoodAug 31, 2025
What should I do if my Hoymiles HYS-3.0LV-EUG1 Inverter displays an Arc Fault?
- D
  daniel08Aug 31, 2025
  If your Hoymiles inverter detects an arc fault: 1. Disconnect the DC switch and check whether the DC cables are damaged and whether the wiring terminals are loose or in poor contact. If so, take corresponding corrective measures. 2. After taking corresponding measures, reconnect the DC switch. If the alarm persists, contact Hoymiles technical support team.

Hoymiles HYS-3.0LV-EUG1 Specifications

General

Model	HYS-3.0LV-EUG1
Rated Power	3000 W
Nominal AC Output Power	3000 W
Max. AC Output Power	3300 W
Nominal AC Voltage/Range	230 V / 180-280 V
Number of MPPT	1
Cooling Method	Natural Convection
Output Voltage	230 V
Output Frequency	50/60 Hz
Operating Temperature Range	-25°C to +60°C
Protection Level	IP65

Summary

1. Safety Introduction

1.2 Safety Information

Provides essential safety precautions for installation and operation.

2. Product Introduction

2.2 Operating Modes

Describes different operational modes like self-consumption and economic.

2.3 System Diagram

Illustrates the system architecture and connections.

2.3.1 HYS-(3.0-6.0)LV-EUG1 System Diagram

Shows the system diagram for the HYS series inverters.

2.3.2 HAS-(3.0-5.0)LV-EUG1 System Diagram

Introduces the HAS series system diagram.

3. Installation Instruction

3.3 Mounting

Details the process of physically mounting the inverter.

3.4 Electrical Wiring Connection

Guides on connecting the inverter's electrical components.

3.4.1 Grounding Connection

Explains the correct procedure for grounding the inverter and system components.

3.4.2 AC Wiring Connection

Guides on connecting the inverter to the grid via AC wiring.

3.4.2.3 EPS Connection

Details the procedure for connecting to the EPS port for backup power.

3.4.3 PV Wiring Connection

Explains how to connect PV panels to the HYS series inverter.

3.4.4 Battery Wiring Connection

Guides on connecting the battery to the inverter.

3.4.5.2 Smart Meter and CT Connection

Guides on connecting smart meters and current transformers (CTs).

3.4.5.6 Parallel Connection

Guides on setting up multiple inverters in parallel.

3.5 Operation

3.5.1 Commissioning

Provides steps for powering on and commissioning the inverter.

3.5.2 Decommissioning

3.5.3 S-Miles Cloud App

3.5.3.1 DTS Online Setting

3.5.3.2 System Commissioning of Wireless Access Point (AP) Connection

★ Emergency Power Supply (EPS)

★ Generator Setting

★ Self-consumption Mode

★ Economical Mode

★ Full Backup Mode

★ Time of Use Mode

★ Generator Control

Auto Test

Guides on performing an automatic system test for verification.

4. Troubleshooting

Grid Overvoltage

Grid Undervoltage

Grid Overfrequency

Grid Underfrequency

No Grid

PV Reverse Connection

PV Undervoltage

PV Overvoltage

Arc Fault

Troubleshoots arc fault detection in the system.

5. Technical Datasheet

5.1 HYS-(3.0-6.0)LV-EUG1 Specifications

Provides detailed technical specifications for the HYS series inverters.

5.2 HAS-(3.0-5.0)LV-EUG1 Specifications

Provides detailed technical specifications for the HAS series inverters.

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