Hoymiles HMT-2250-6T User Manual

Hoymiles HMT-2250-6T

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User Manual

Three-phase Microinverter HMT-1800/2250

Version 1.0 ( 2020)EN

Table of Contents

Other manuals for Hoymiles HMT-2250-6T

Quick Installation Guide2 pages

Questions and Answers:

J
Jason BallAug 30, 2025
Why is my Hoymiles Inverter showing 'Rapid grid frequency change rate'?
- K
  Kelsey NicholsAug 31, 2025
  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.
J
Joshua MillsAug 29, 2025
What should I do if my Hoymiles Inverter displays a grid underfrequency error?
- D
  Darrell PetersonAug 29, 2025
  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.
M
megan62Aug 28, 2025
What to do if Hoymiles Inverter shows grid overfrequency?
- S
  Stacey GarciaAug 28, 2025
  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.
M
Michael YoderAug 27, 2025
What should I do if my Hoymiles Inverter displays a grid undervoltage error?
- B
  Bruce JimenezAug 27, 2025
  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.
J
Jennifer NicholsonAug 27, 2025
What does it mean when my Hoymiles Inverter shows '10 min value grid overvoltage'?
- M
  Michael MatthewsAug 27, 2025
  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.
B
Brandon BanksAug 25, 2025
What to do if my Hoymiles Inverter reports grid overvoltage?
- V
  vanessa58Aug 26, 2025
  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.
A
Annette ShepardAug 25, 2025
What to do if my Hoymiles Inverter is offline?
- J
  jasonschneiderAug 25, 2025
  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.

Hoymiles HMT-2250-6T Specifications

General

Model	HMT-2250-6T
Category	Inverter
Max. Output Power	2250 W
Number of MPPTs	6
Efficiency	96.5%
Peak Power Tracking Voltage Range	16-60 V
Startup Voltage	22 V
Rated Output Power	2250 W
Rated Output Current	9.78A
Nominal Output Voltage/Range	230 V
Rated Output Voltage	230 V
Output Frequency	50/60 Hz
Cooling Method	Natural Convection
Protection Level	IP67
Maximum Input Current	12A
Ambient Temperature Range	-40°C to +60°C
Operating Temperature Range	-40°C to +60°C

Summary

1. Important Notes

2. About Safety

2.1 Important Safety Instructions

Outlines critical safety precautions for installation, operation, and maintenance.

4. Installation Preparation

4.1 Module Compatibility

4.2 AC Branch Circuit Capacity

Details maximum microinverters per branch based on cable gauge and voltage.

4.3 Position and Space Required

Recommends installation location under PV modules for protection and ventilation.

5. Microinverter Installation

5.1 Accessories

5.2 Pre-installation

5.3 Installation Steps

Details the process of fixing microinverters and completing AC connections.

6. Troubleshooting

6.1 Troubleshooting List

Provides a detailed list of alarm codes, names, and suggested solutions for common issues.

6.2 Status LED Indicator

Explains the meaning of LED status indicators during startup and operation.

6.3 On-site Inspection

Guides qualified installers on checking microinverter operation and grid connection.

6.4 Routine Maintenance

Outlines procedures for regular maintenance and safety precautions.

6.5 Replace Microinverter

Provides steps for removing and replacing a microinverter, including monitoring system updates.

8. Technical Data

8.1 DC Input

8.2 AC Output

8.3 Efficiency, Safety and Protection

8.4 Mechanical Data

8.5 Features

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