SunSynk 8kW User Manual

Website: www.sunsynk.com E-mail: sales@globaltech-china.com
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F18 faults can occur during the night, often caused by a heavy inrush current caused by many electronic
devices switching on together.
The user needs to separate the essential and non-essential load. Only connect essential loads to the
'Load' input and non-essential loads to the 'Grid' port.
Remember that the inverter sends power from both the 'Grid' connection and the 'Load' connection.
F20 - DC over current fault of the hardware
This error is usually caused by the battery not being able to deliver current to the inverter. There is an
overcurrent cut-out on the battery. A high current overload on startup may also cause this cause fault.
To clear this fault, you must focus on the battery and battery discharge settings.
You need to check the C-rating of the battery. If the battery cannot provide current sufficient for the 8.8kW
inverter, it simply crashes out.
1) Check the battery C rating.
2) Check the maximum discharge current on the inverter settings.
3) Check the maximum power that the inverter can supply, which is a global setting that you can set on the
main controller.
4) Check if the battery cables are heavy enough to meet the current demand.
F23 - AC leakage current or transient over current
This error is a fault on the main side that causes an earth leakage trip from the PV.
1) Double-check all your main cables coming in and make a mega test or installation test on the cables to
ensure there is no leakage.
2) Check the PV ground connection.
3) Reset the system.
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SunSynk 8kW Specifications

General

Rated Power	8kW
Max. DC Voltage	500V
Number of MPPTs	2
Max Output Current	35A
Max Efficiency	97.6%
Battery Voltage	48V
Max Charging Current	190A
Max Discharging Current	190A
Frequency	50/60Hz
Max PV Input	10400W
Operating Temperature	-25°C to 60°C
Protection Rating	IP65
Max DC Input Voltage	500V
Max Input Current	22A
Nominal AC Voltage	230V
Communication	RS485
Protection	Overload Protection
Cooling	Fan