Step 3: Remove Rs485 communication board by unscrewing two screws as below chart.(BMS model)
Step 4: Remove two screws as below chart and remove 2-pin and 14-pin cables. Take out the board under the
communication board.
Step 5: Remove two screws as below chart to take out cover of parallel communication.
Step 6: Install new parallel board with 2 screws tightly.
Step 7: Re-connect 2-pin and 14-pin to original position.
Parallel board Communication board
Step 8: Put communication board back to the unit.
Step 9: Put wire cover back to the unit. Now the inverter is providing parallel operation function.
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