UV fault
Check if there is
powering off during
inverter running
The power supply voltage is in
the standard range?
Ensure the power supply
meet the need
Check if the air switch and
contactor on the inside is off or
abnormal or not
Switch on the air switch
and contactor and settle
the abnormal
Adjust the power supply
Ensure the power off
reason and settle the
abnormal
If the it is the inverter
fault, please contact with
our company
Check if there is big power
device in the same power
supply
Yes
No
Yes
No
Yes
No
Yes
No
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