What to do if Sunways Inverter shows Mains Lost?
If your Sunways Inverter displays a 'Mains Lost' error, it could be due to a grid power outage or a disconnection in the AC switch or circuit. First, verify if there is a mains supply issue in your area. Also, check to ensure the AC breaker and terminals are securely connected.
What to do if Sunways Inverter shows Grid Voltage Fault?
If your Sunways Inverter is showing a 'Grid Voltage Fault', it means the grid voltage is either too high or too low. Begin by checking that your safety regulation settings are correct. You should also check the grid voltage. If it's outside the inverter's protection parameter range, contact your local grid company. Also, a too high impedance of the AC cable may cause this problem. Consider replacing it with a thicker AC cable.
Why is my Sunways STT Inverter showing PV Over Voltage?
The 'PV Over Voltage' error on your Sunways Inverter indicates that the input voltage is too high. To resolve this, reduce the number of PV panels connected to the inverter to ensure the open-circuit voltage of each string is lower than the inverter's maximum allowed input voltage.
How to fix Grid Frequency Fault on Sunways STT?
A 'Grid Frequency Fault' on your Sunways Inverter means the grid frequency is too high or too low. Start by checking that the safety regulation settings are correct. Also, check the grid frequency. If the grid frequency exceeds the allowed range of inverter protection parameters, please contact the local grid company to resolve the issue.
What causes Inverter Over Temperature in Sunways Inverter?
An 'Inverter Over Temperature' error on your Sunways Inverter means the internal temperature is too high. Check whether the inverter is directly exposed to sunlight. It is also recommended to reduce the ambient temperature around the inverter.
What to do if Sunways STT displays GFCI Fault?
If your Sunways Inverter is showing a 'GFCI Fault', it indicates excessive leakage current, meaning the ground current is too high. Check whether the PV cable has a short circuit to ground.
How to fix ISO Over Limitation on Sunways STT?
The 'ISO Over Limitation' error on your Sunways Inverter suggests low system insulation resistance, often due to poor insulation or a damp environment. Check the PV panels, cables, and connectors for any breaks or water leaks. Also, verify that there is a reliable inverter grounding line.
Why Sunways Inverter has No Display?
If your Sunways Inverter has no display, check that all cables are firmly connected and the DC switch is on. Also, ensure the input voltage meets the required working voltage.
What does DCI Fault mean on Sunways STT Inverter?
A 'DCI Fault' on your Sunways Inverter indicates a high DC component in the AC output. Try restarting the inverter and wait for it to recover. If the fault occurs repeatedly, please contact Sunways.
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