To Next PageTo Next PageWhat to do if my Goodwe MT Inverter shows 'Utility Loss'?
If your Goodwe Inverter displays a 'Utility Loss' error, it means it's not connected to the power grid. First, check if the power grid cable is properly connected. Also, verify the availability of the power grid itself.
Why is my Goodwe Inverter showing a 'Vac Failure'?
A 'Vac Failure' on your Goodwe Inverter indicates a grid voltage issue. The inverter should automatically restart within 5 minutes if the grid returns to normal. Ensure the grid voltage conforms to the specified requirements and that the neutral (N) and protective earth (PE) wires are securely connected.
How to fix a 'Fac Failure' on a Goodwe MT?
If your Goodwe Inverter is showing 'Fac Failure', this means the grid is not connected. Check the grid connection cables and verify the availability of the grid.
What to do if my Goodwe MT is overheating?
If your Goodwe Inverter is experiencing an 'Over Temperature' error, it means the internal temperature is higher than the specified normal value. Try to reduce the ambient temperature or move the inverter to a cooler location.
What does 'Ground I Failure' mean on my Goodwe MT Inverter?
If your Goodwe Inverter displays 'Ground I Failure', it indicates that the ground current is too high. Disconnect the inputs from the PV generator and inspect the peripheral AC system. Once the problem is resolved, reconnect the PV panel and check the Inverter status.
Why is my Goodwe MT Inverter showing 'PV Over Voltage'?
If your Goodwe Inverter is showing 'PV Over Voltage', verify that the PV open circuit voltage is not higher or too close to the maximum input voltage.
How to troubleshoot a 'Relay-Check Failure' on a Goodwe MT?
If your Goodwe Inverter displays 'Relay-Check Failure', turn off the DC switch of the inverter and wait until the LCD light turns off. Then, turn the DC switch back on, ensuring it is properly connected.
What does 'Isolation Failure' mean on my Goodwe Inverter?
If your Goodwe Inverter displays 'Isolation Failure', check the impedance between Ground and PV (+) & PV (-). The impedance value must be greater than 100k?. Also, ensure the inverter is properly earthed.
Explains the purpose and application of the MT series inverter in PV systems.
Provides an illustration and description of the MT series inverter's external components.
Details the principle and function descriptions of the MT series inverter.
Lists the components included in the inverter package and DC plug specifications.
Guidelines for optimal inverter placement and environmental considerations.
Covers selection of installation location and mounting procedures for the inverter.
Details AC grid connection, earth terminal, and PV panel wiring.
Explains USB, RS485, and WiFi communication setup and usage.
Describes the inverter's front panel interface with LCD and LED indicators.
Explains the menu structure, navigation, and icons on the inverter display.
Details how to configure system parameters like language, time, and communication.
Explains procedures for resetting and reloading the inverter's Wi-Fi module.
Outlines essential checks and steps before first-time inverter operation.
Lists common error codes, messages, and their descriptions displayed on the LCD.
Describes user-settable parameters like trip points and curve adjustments via software.
Provides steps to resolve issues related to isolation faults.
Offers solutions for ground current faults and related checks.
Details troubleshooting steps for grid voltage issues.
Explains how to address grid connection or availability issues.
Provides guidance on resolving grid disconnection or faults.
Offers solutions for problems related to excessive PV array voltage.
Provides steps to resolve issues caused by high internal temperatures.
Troubleshooting steps for high DC injection current.
Steps for resolving EEPROM read/write failures.
Troubleshooting for SCI (Serial Communication Interface) failures.
Steps to address SPI (Serial Peripheral Interface) communication failures.
Troubleshooting for GFCI (Ground Fault Circuit Interrupter) related issues.
Guidance for resolving DC bus unbalance issues.
Troubleshooting steps for internal fan faults.
Steps to address external fan faults.
Troubleshooting guidance for fan faults.
Steps to take when the inverter display shows no output.
Solutions for issues connecting the Wi-Fi module to the network.
Lists detailed technical specifications for various MT series inverter models.
Illustrates the internal circuit structure and components of the MT series main circuits.
Instructions for cleaning the inverter's cooling fans.
Recommendations for checking and maintaining the DC switch.
Details the correct sequence for starting up and shutting down the inverter.
Guidance on checking electrical connections for loose wires or grounding issues.
Provides step-by-step instructions for replacing inverter fuses.
Explains the purpose and application of the MT series inverter in PV systems.
Provides an illustration and description of the MT series inverter's external components.
Details the principle and function descriptions of the MT series inverter.
Lists the components included in the inverter package and DC plug specifications.
Guidelines for optimal inverter placement and environmental considerations.
Covers selection of installation location and mounting procedures for the inverter.
Details AC grid connection, earth terminal, and PV panel wiring.
Explains USB, RS485, and WiFi communication setup and usage.
Describes the inverter's front panel interface with LCD and LED indicators.
Explains the menu structure, navigation, and icons on the inverter display.
Details how to configure system parameters like language, time, and communication.
Explains procedures for resetting and reloading the inverter's Wi-Fi module.
Outlines essential checks and steps before first-time inverter operation.
Lists common error codes, messages, and their descriptions displayed on the LCD.
Describes user-settable parameters like trip points and curve adjustments via software.
Provides steps to resolve issues related to isolation faults.
Offers solutions for ground current faults and related checks.
Details troubleshooting steps for grid voltage issues.
Explains how to address grid connection or availability issues.
Provides guidance on resolving grid disconnection or faults.
Offers solutions for problems related to excessive PV array voltage.
Provides steps to resolve issues caused by high internal temperatures.
Troubleshooting steps for high DC injection current.
Steps for resolving EEPROM read/write failures.
Troubleshooting for SCI (Serial Communication Interface) failures.
Steps to address SPI (Serial Peripheral Interface) communication failures.
Troubleshooting for GFCI (Ground Fault Circuit Interrupter) related issues.
Guidance for resolving DC bus unbalance issues.
Troubleshooting steps for internal fan faults.
Steps to address external fan faults.
Troubleshooting guidance for fan faults.
Steps to take when the inverter display shows no output.
Solutions for issues connecting the Wi-Fi module to the network.
Lists detailed technical specifications for various MT series inverter models.
Illustrates the internal circuit structure and components of the MT series main circuits.
Instructions for cleaning the inverter's cooling fans.
Recommendations for checking and maintaining the DC switch.
Details the correct sequence for starting up and shutting down the inverter.
Guidance on checking electrical connections for loose wires or grounding issues.
Provides step-by-step instructions for replacing inverter fuses.
The GoodWe MT Series is a range of four-MPPT, three-phase, transformerless grid-connected solar inverters designed to convert direct current (DC) generated by photovoltaic (PV) modules into alternating current (AC) that conforms to local utility grid parameters and is fed into the grid. This manual provides essential instructions for the installation and maintenance of these inverters, which include models such as GW30KLV-MT, GW35KLV-MT, GW50KLV-MT, GW50KN-MT, GW50KBF-MT, GW60KN-MT, GW60KBF-MT, GW70KHV-MT, GW75K-MT, GW80KHV-MT, GW80K-MT, and GW80KBF-MT.
The core function of the MT Series inverter is power conversion. It takes DC power from PV strings, transmits it to a DC BUS via a BOOST circuit, and then converts it into AC power suitable for the grid. The four Maximum Power Point Trackers (MPPTs) ensure optimal power utilization even under varying PV installation conditions. Integrated protective circuits safeguard both the inverter and human safety. A DC switch is included for safe disconnection of the DC input. The inverters offer standard RS485 and optional Wi-Fi interfaces for communication, allowing for running data display and parameter configuration via an LCD panel or a dedicated app (SolarGo App).
The inverter's functions are broadly categorized into:
The MT Series inverters are designed for robust performance across various models. Key specifications include:
General
