7.2 Inverter LED Indicators
When the inverter operates, LED symbols on display have the following
meanings:
17
16
V.
2
V.
2
7.3 Display and Control Logics
When inverter starts up and operates, there is a control button beside LCD
Display of the inverter. Please follow the logics listed below.
After all installation and checks, close the AC circuit-breaker, then the
DC switch. The inverter will start to operate when DC input voltage and
grid conditions meet the requirements of inverter startup.
6. Cables: Check if all cables are reliably connected. Check if the
connections are effective, while the insulations are undamaged.
7. Groundings: Check all groundings using multimeter and if all exposed
metal parts of the inverter are properly grounded.
8. DC Voltage: Check if the largest open-circuit voltage of PV arrays
complies with the permitted range.
9. DC Polarity: Check if the wires from DC voltage resource are connected
to terminals with correct polarity.
10. Grounding Resistance: Check if the grounding resistance of PV strings
1MOhm using a multimeter.
