Why is my Goodwe Inverter showing a Blank Screen?
If your Goodwe Inverter screen is blank when the DC is on, try these steps: * Measure the DC voltage to ensure it's higher than the start-up voltage. * Check if the PV string poles are reversed. * Inspect the DC and AC connectors for any damage. * Disconnect both AC and DC power from the inverter, wait 15 minutes, and then reconnect.
What causes Over Temperature Failure in Goodwe Inverter and how to resolve it?
If your Goodwe Inverter is showing an Over Temperature Failure, it means the inverter is getting too hot. Here's what you can do: * Ensure the inverter is installed according to the user manual's guidelines for positioning and ventilation. * Try to lower the ambient temperature around the inverter. Shut it down for 15 minutes, then restart it. If the fault persists, contact a GoodWe service center.
What to do if my Goodwe GW1000-NS Inverter has WiFi Monitoring Failure?
If you're experiencing WiFi Monitoring Failure with your Goodwe Inverter, consider these steps: * First, confirm that your inverter is indeed a WiFi-enabled model. * Check the 'Power' light on the inverter. If it's solid, try modifying the communication mode. * Try reloading the WiFi module to see if the Solar-WiFi connection stabilizes. * Remove the inverter cover and reconnect the ribbon cable of the WiFi module.
Why is my Goodwe GW1000-NS Inverter stuck in 'Waiting' mode?
If your Goodwe Inverter remains in 'Waiting' mode, here are a couple of things to check: * When using the inverter for the first time, ensure the DC switch is on while keeping the AC switch off. Otherwise, the inverter will remain in 'Waiting' mode. * Measure the DC voltage of the inverter to ensure it exceeds the start-up voltage requirement.
What to do if my Goodwe GW1000-NS shows a Vac Failure?
If your Goodwe Inverter displays a Vac Failure, it means there's an issue with the grid voltage. First, the inverter will automatically restart within 5 minutes if the grid returns to normal. Ensure the grid voltage conforms to the specified requirements. Also, verify that the neutral (N) wire and PE cable are securely connected.
What should I do if my Goodwe Inverter shows Ground I Failure?
If your Goodwe Inverter displays a 'Ground I Failure', it means the inverter has detected high current leakage. Here's how to troubleshoot: * Disconnect all PV strings from the inverter. Then, connect each string individually to identify the faulty string. Inspect the wiring of that string for any damage. * If the fault only appears during rainy or wet weather, you can disregard the fault, as it might be due to temporary moisture.
What does ISO Failure mean on my Goodwe GW1000-NS Inverter and how to fix it?
An ISO Failure on your Goodwe inverter indicates that the ground insulation impedance is too low. Here’s how to address it: * If the fault occurs at dawn, dusk, or during rainy days, it might be a temporary issue and can be ignored. * Measure the impedance of PV+ and PV- to ground. The values should be higher than 2MΩ. If the impedance is too low, inspect the insulation or rewire the PV connection. * Measure the impedance of N to ground; it should be close to zero. If not, check the AC wiring. * Ensure that the inverter's firmware is up to date. If not, update it to the latest version.
Why is my Goodwe GW1000-NS displaying a Vac Failure?
A 'Vac Failure' on your Goodwe inverter indicates that the grid voltage is out of the acceptable range. To resolve this: 1. Measure the voltage when the inverter displays ‘Vac Failure’. If it's outside the regulated limits, contact your electricity company. 2. Measure the voltage between N and PE on the inner AC side of the inverter; it should be less than 1V. If it's higher, check the AC wiring. 3. Compare the ‘Vac’ value on the inverter screen with the voltage measured at the switchboard. If they don't match, contact a GoodWe service center.
What to do if my Goodwe GW1000-NS Inverter shows Utility Loss?
If your Goodwe Inverter indicates a Utility Loss, it means the inverter isn't detecting a grid connection. Here's what you should do: * Ensure the AC switch is in the ‘ON’ position. If it is, use a multimeter to check the voltage at the AC connector and the main switchboard wiring to confirm the grid is active. * Verify that the L, N, and PE wires are connected to the correct pins. Adjust the wiring if necessary. * Check the ‘Vac’ value displayed on the screen against the actual grid voltage. If the values are outside the regulation limits, contact your electricity company. * Turn off both the AC and DC power to the inverter, wait 5 minutes, and then measure the impedance between L & N to ground. If the values are less than 200KΩ, contact the GoodWe local service center.
What to do if my Goodwe GW1000-NS Inverter has no display?
If your Goodwe Inverter's display is not working: 1. Turn off the DC switch and unplug the DC connector, then measure the voltage of the PV array. 2. Plug in the DC connector and turn on the DC switch. 3. If the PV array voltage is lower than 250V, check the configuration of the inverter module.
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