Grid loss
• Check the fuse and the triggering of the circuit
breaker in the distribution box.
• Check the grid voltage, grid usability.
• Check the AC cable, grid connection on the inve-
rter.
If this fault is still being shown, contact the service.
• Make sure the grounding connection of the inve-
rter is reliable.
• Make a visual inspection of all PV cables and mo-
dules.
If this fault is still shown, contact the service.
• Check the open-circuit voltages of the strings
and make sure it is below the maximum DC input
voltage of the inverter.
If the input voltage lies within the permitted range
and the fault still occurs, please call service.
• Check the PV array’s insulation to ground and
make sure that the insulation resistance to ground
is greater than 1 Mohm. Otherwise, make a visual
inspection of all PV cables and modules.
• Make sure the grounding connection of the inve-
rter is reliable.
If this fault occurs often, contact the service.
Check whether the airow to the heat sink is
obstructed.
• Check whether the ambient temperature around
the inverter is too high.
• Disconnect the inverter from the grid and the PV
array and reconnect after 3 minutes.
If this fault is still being shown, contact the service.
• Check the input mode setting is correct.
Restart the inverter and wait until it functions
normally.
Contact customer service if error warning contin-
ues.
GFCI fault
PV over
voltage fault
Isolation fault
Over
temperature
fault
Self-diagnosis
fault
Bus over
voltage
35
36
37
38
40
41, 42
46
UM0035_ASW05-12kH-T2-T3_EN_V01_0523
To Next Page
Loading...
