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