Austa AU Series - Page 45

42
No.
Failure
solution
1
LED indicator and LCD
screen do not light up
1. Disconnect AC side circuit breaker.
2. Disconnect DC side circuit breaker.
3. Check the input voltage of the PV arrays (whether it is lower
than 200V).
4.If the above conditions are met, check the circuit breaker.
2
"on line" indicator goes
off
1. Disconnect AC side circuit breaker.
2. Disconnect DC side circuit breaker.
3.Check whether the parameters on the AC and DC sides meet
the startup requirements. If the parameters meet the
requirements, check the wiring according to 3.5 Electrical
connection.
3
PV arrays voltage fault
(DC voltage>1000V or
<250V)
1. Disconnect AC side circuit breaker.
2. Disconnect DC side circuit breaker.
3. Check whether the voltage of each group of PV arrays meets
the range of 300V-1000V.
4. When the DC voltage is restored to the allowable range of the
inverter, restart the inverter.
4
Unet fault 170V
(the grid voltage>450V
or <310V)
1. Disconnect AC side circuit breaker.
2. Disconnect DC side circuit breaker.
3.Detect the voltage on the AC side.
4.If the grid voltage is not within the allowable voltage range of
the inverter, please contact the supplier to adjust the grid
voltage.
5
Frequence fault 47.05HZ
(the grid frequency is
neither 47-51.5Hz nor
57-61.5Hz)
1. Disconnect AC side circuit breaker.
2. Disconnect DC side circuit breaker.
3.Detect the frequency on the AC side.
4.If the current grid frequency is not in the inverter's allowable
frequency range, please contact the local power company to
adjust the grid frequency.
6
Temperature fault 120℃
(inverter temperature is
over limit)
1. Disconnect AC side circuit breaker.
2. Disconnect DC side circuit breaker.
3. Check whether the ambient temperature is higher than 60 ℃
or lower than -25 ℃.