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8. Commissioning
Parallel in single phase
Step 1: Check the following requirements before installation:
Correct wire connection
Ensure all breakers in Line wires at load side are open and each Neutral wires of each unit is connected
together.
Step 2: Turn on all of the units and configure LCD program 28 as
2A0
. And then shut down all units.
NOTE: It’s necessary to turn off switch when setting LCD program. Otherwise, the setting cannot be
programmed.
All the units must use same selection.
Step 3: Turn on each unit.
LCD display of “2A0” selection
Step 4: Switch on all AC breakers of Line wires in AC input. It’s better to connect all of the inverters to the utility
at the same time. If not, it will display fault 82 in the following inverters. However, these inverters will
automatically restart. If detecting AC connection, they will work normally.
LCD display of “2A0” selection
Step 5: If there is no more fault alarm, the parallel system is completely installed.
Step 6: Please switch on all breakers of Line wires in load side. This system will start to provide power to the
load.
Parallel in split phase
Step 1: Check the following requirements before installation:
Correct wire connection
Ensure all breakers in Line wires at load side are open and each Neutral wires of each unit is connected
together.
Step 2: Turn on all of the units and configure LCD program 28 as
2A1 or 2A2
. And then shut down all units.
NOTE: It’s necessary to turn off switch when setting LCD program. Otherwise, the setting cannot be
programmed.
All the units must use same selection.
Step 3: Turn on each unit.
LCD display of “2A1” selection
LCD display of “2A2” selection
Step 4: Switch on all AC breakers of Line wires in AC input. It’s better to connect all of the inverters to the utility
at the same time. If not, it will display fault 82 in the following inverters. However, these inverters will
automatically restart. If detecting AC connection, they will work normally.
LCD display of “2A1” selection
LCD display of “2A2” selection
