Sungrow SG2KTL-S User Manual page 66

9 Troubleshooting and Maintenance
Fault
Description
Code
Auxiliary DSP AC current
057 sampling
anomaly
Auxiliary DSP detects AC
current
058
exceeds
protection range
Main and auxiliary DSP
059
communication anomaly
Main and auxiliary DSP
060
sampling difference
070 Fans are defective
Arc
087
anomaly warn
088 Arc anomaly fault
089 Arc detection OFF warn
The AC output current
100 exceeds
protection limit.
The grid
101 exceeds
allowable upper limit.
The grid frequency is
102 below
allowable lower limit.
The inverter
106
grounded
200 The bus voltage is high.
58
Troubleshooting
1. Wait a moment for inverter recovery.
channel 2. If the fault occurs repeatedly, contact
Sungrow Service Dept..
1. Wait a moment for inverter recovery.
DC injection
2. If the fault occurs repeatedly, contact
inverter set
Sungrow Service Dept..
1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact
Sungrow Service Dept..
1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact
Sungrow Service Dept..
Stop the inverter and disconnect the AC & DC
cables. Check whether the fan duct has been
blocked. If not, replace fans.
self-detection Wait a while. Contact Sungrow if device is still
in self-detection warn state.
1. Stop the inverter and disconnect the AC &
DC cables. Check cable connection for aging
and looseness. Re-power on and remove the
arc warn manually.
2. Contact Sungrow if this fault still occurs.
Remove the warn by enable arc detection
function or keep the warn by closing arc
detection function.
1. The inverter will resume if the output current
falls below the protection value.
inverter
2. If the fault still exists, please contact
Sungrow Service Dept..
frequency 1. Check the grid frequency.
inverter
2. If the grid frequency exceeds the permissible
range of inverter protection parameters, ask
utility grid company for solution.
the inverter 3. If the grid frequency is within the permissible
range, contact Sungrow Service Dept..
Check whether there is a reliable inverter
is not grounding line, if there is access to the ground,
and the fault still exists, please contact
Sungrow Service Dept..
1. Wait for inverter recovery after bus voltage
lower.
2. If the fault occurs repeatedly, contact
Sungrow Service Dept..
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