Single Phase Hybrid Inverter Troubleshooting
64
Oscillation of grid voltage
One-level under-
frequency of AC power
1. If the fault occurs occasionally, it may
be caused by momentary abnormality of the
power grid. The inverter will resume normal
operation when the power grid gets back to
normal.
2. If the fault occurs frequently, check
whether the power grid is connected properly.
One level over-frequency
of AC power
Two-level under-
frequency of AC power
Two-level over-frequency
of AC power
Startup under-frequency
of AC power
Startup over-frequency of
AC power
Remote shutdown
instruction
Check whether any one is trying to shut down
the inverter remotely.
Please turn off the inverter and open the input
and output switches, and turn on the inverter
again 5 minutes later. If the fault still exists,
contact your dealer.
Power-on
self-test
error of
AFCI
Power-on self-test error of
PV string 1
Please turn off the inverter and open the input
and output switches, and turn on the inverter
again 5 minutes later. If the fault still exists,
contact your dealer.
Power-on self-test error of
PV string 2
Please turn off the inverter and open the input
and output switches, and turn on the inverter
again 5 minutes later. If the fault still exists,
contact your dealer.
Check whether the AC wires are connected
properly and reliably to the inverter.
Power-on
self-test
error of
leakage
current
Leakage current sensor
failure
Please turn off the inverter and open the input
and output switches, and turn on the inverter
again 5 minutes later. If the fault still exists,
contact your dealer.
PV string
detection
error
Please turn off the inverter and open the input
and output switches, and turn on the inverter
again 5 minutes later. If the fault still exists,
contact your dealer.
Please turn off the inverter and open the input