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polarity is correct. Incorrect connection will damage the unit forever!
Checking
1. After connecting DC
1
, the message on the LCD display should be in the
sequence of “INV Waiting” → “No Utility” and the RED fault LED keeps
on.
2. Close the AC breaker or fuse in previous section, check whether the
inverter starts to work.
3. If inverter works normally, the LCD will show “Working mode”. That is the
power feed to grid.
4. The checking is completed.
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