Inverter Troubleshooting - PrimeVOLT PV 3K6HB-60 User Manual

Single-phase ESS Inverter User Manual

8.2 Inverter Troubleshooting

When the inverter has an exception, its basic common warning and exception handling methods are
shown below.
Code Alarm Information
A0 Grid over voltage
A1 Grid under voltage
A3 Grid over frequency
A4 Grid under frequency
A2 Grid absent
B0 PV over voltage
B1 PV insulation abnormal
B2 Leakage current abnormal
B4 PV under voltage
C0 Internal power supply
abnormal
Suggestions
1. If the alarm occurs occasionally, possibly the power grid
voltage is abnormal for a short time, and no action is required.
2. If the alarm occurs repeatedly, contact the local power
station. After receiving approval of the local power bureau,
revise the electrical protection parameters settings on the
inverter through the App.
3. If the alarm persists for along time, check whether the AC
circuit breaker /AC terminals is disconnected or not, or if the
grid has a power outage.
Wait till power is restored.
Check whether the maximum voltage of a single string of input PV modules
is greater than the allowable voltage. If the maximum voltage is higher
than the standard voltage, modify the number of pv module connection
strings.
1. Check the insulation resistance against the ground for the PV
strings. If a short circuit has occurred, rectify the fault.
2. If the insulation resistance against the ground is less than the
default value in a rainy environment, set insulation resistance
protection on the App.
1. If the alarm occurs occasionally, the inverter can be automatically
recovered to the normal operating status after the fault is rectified.
2. If the alarm occurs repeatedly, contact your dealer for
technical support.
1. If the alarm occurs occasionally, possibly the external circuits are
abnormal accidentally. The inverter automatically recovers to the normal
operating status after the fault is rectified.
2. If the alarm occurs repeatedly or last a long time, check
whether the insulation resistance against the ground of PV
strings is too low.
1. If the alarm occurs occasionally, the inverter can be automatically
restored, no action required.
2. If the alarm occurs repeatedly, pls. contact the customer service center.
Maintenance
80