Goodwe GW29.9K-MT - User Manual

Questions and Answers

S
Scott DavisAug 18, 2025
What to do if my Goodwe Inverter shows System Failure?
- A
  Amanda Best DDSAug 18, 2025
  If your Goodwe Inverter is showing a System Failure, here are a few things you can check: 1. First, disconnect the DC switch and take off the DC connector. Then, check the impedance between PV (+) & PV (-) to earth. 2. If the impedance is less than 100 kΩ, check the insulation of the PV string wiring to the earth. 3. If the impedance is larger than 100 kΩ, check AC wiring after taking off the AC connector and measuring the impedance between neutral and PE. If it is larger than 10 kΩ, check AC wiring.
M
Maurice MarshAug 20, 2025
What should I do if my Goodwe Inverter has Utility Loss?
- S
  Susan WeeksAug 20, 2025
  If your Goodwe Inverter reports a Utility Loss, follow these steps: 1. Disconnect the DC switch and take off the AC connector. 2. Measure the voltage between line and neutral in the connector to ensure it conforms to the grid-connected specification of the inverter. 3. If it doesn't, check if the distribution switch is connected and the grid is normal. 4. If it does, reconnect the AC connector and DC connector.
A
Andrew GreenAug 22, 2025
What to do if Goodwe Inverter displays AC Voltage Failure?
- J
  jennifer15Aug 22, 2025
  If your Goodwe Inverter displays an AC Voltage Failure, here’s what you can do: 1. Disconnect the DC switch and take off the AC connector. 2. Measure the voltage between line and neutral in the connector to ensure it conforms to the grid-connected specification of the inverter. 3. If it doesn't, check the grid wiring. 4. If it does, connect the AC connector and reconnect the DC switch; the inverter will connect automatically.
C
christopher30Aug 26, 2025
What to do if Goodwe GW29.9K-MT Inverter shows Ground I Failure?
- Z
  Zoe MorrisAug 26, 2025
  If your Goodwe Inverter shows a Ground I Failure, try the following: 1. Disconnect the DC switch. 2. Check the insulation of the PV string wiring to earth. 3. Reconnect the DC switch again.
J
Joanna RiceAug 27, 2025
What to do if my Goodwe Inverter has AC Frequency Failure?
- D
  Dr. Dawn JuarezAug 28, 2025
  If your Goodwe Inverter is experiencing an AC Frequency Failure, the PV inverter will automatically restart when the frequency returns to normal.
T
Timothy RandallAug 30, 2025
What to do if my Goodwe GW29.9K-MT Inverter is not displaying anything?
- R
  Robin PerryAug 30, 2025
  If your Goodwe Inverter has no display, take these steps: 1. Disconnect the DC switch and take off the DC connector. 2. Measure the voltage of the PV string. 3. Plug in the DC connector and reconnect the DC switch. 4. If the voltage is less than 70 V, check the PV string configuration.
J
Joe VillanuevaSep 1, 2025
What to do if my Goodwe Inverter shows 'Vac Failure'?
- M
  Matthew LoganSep 1, 2025
  If your Goodwe Inverter displays a 'Vac Failure', the inverter will automatically restart within 5 minutes if the grid returns to normal. Also, ensure that the grid voltage conforms to the specifications and that the neutral (N) wire and PE wire are properly connected.
G
Gregory SantosSep 4, 2025
What should I do if my Goodwe GW29.9K-MT Inverter displays 'Utility Loss'?
- C
  Caleb TylerSep 4, 2025
  If your Goodwe Inverter is showing a 'Utility Loss' error, make sure that it is connected to the grid. Check if the power grid cable is connected and verify the availability of the power grid.
N
Nicole FrederickSep 6, 2025
What does 'Fac Failure' mean on my Goodwe GW29.9K-MT and how to fix it?
- J
  Jordan HuntSep 7, 2025
  If your Goodwe Inverter displays 'Fac Failure', it indicates that the grid is not connected. Check the grid connection cables and verify the availability of the grid.
A
Andrew RubioSep 9, 2025
What to do if Goodwe GW29.9K-MT shows 'Ground I Failure'?
- B
  Belinda MillerSep 9, 2025
  If your Goodwe Inverter is showing a 'Ground I Failure', it means that the ground current is too high. Unplug the inputs from the PV generator and check the peripheral AC system. After clearing the problem, reconnect the PV panel and check the Inverter status.

Summary

Safety Precautions

General Safety Guidelines

Outlines essential safety rules for inverter operation and maintenance.

DC Side Electrical Safety

Specific safety instructions for DC connections to the inverter.

AC Side Electrical Safety

Inverter Installation Safety

Installation

Installation Environment Requirements

Inverter Mounting Procedure

Electrical Connections

Electrical Connection Safety

PV Input Cable Connection

Detailed steps for connecting the DC PV input cables.

AC Output Cable Connection

Detailed steps for connecting the AC output cable.

Equipment Commissioning

Pre-Power On Checklist

Inverter Power On Procedure

System Commissioning

LCD Interface and Parameter Settings

Guide to navigating the LCD and configuring inverter parameters.

Maintenance

Troubleshooting Common Faults

Diagnosing and resolving common inverter issues and alarms.

Routine Maintenance Schedule

Technical Parameters

DC Input Specifications

Details on maximum input power, voltage, and current.

AC Output Specifications

Details on nominal output power, voltage, and current.

Efficiency and Protection Features

General Data and Environment

Goodwe GW29.9K-MT Specifications

General

Model	GW29.9K-MT
Rated Power	29.9 kW
Input Voltage Range	200-1000 V
Max DC Input Voltage	1100 V
Start Voltage	200 V
Protection Class	IP65
Rated AC Power	29.9 kW
Rated AC Voltage	400 V
AC Voltage Range	310-480 V
THDi	<3%
Rated AC Frequency	50/60 Hz
DC Switch	Yes
Power Factor	0.8 leading ... 0.8 lagging
Operating Temperature Range	-25 ~ +60 °C
Communication	RS485, Wi-Fi, Ethernet