User Manual
9 Troubleshooting and Maintenance
61
Code
Description
Troubleshooting
100
The AC output current
exceeds
the upper
limit.
1. The inverter will resume if the output
current falls below the protection value.
2. If the fault persists, please contact
Sungrow Service Dept.
101
Grid over-frequency.
The grid frequency
exceeds the protective
value, which is higher
than the protective
value of error 008.
(stage II)
1. Check the grid frequency.
2. If the grid frequency exceeds the
permissible range of inverter protection
parameters, ask utility grid company for
solution.
3. If the grid frequency is within the
permissible range, contact Sungrow Service
Dept.
102
Grid under-frequency.
The grid frequency is
below the protective
value, which is lower
than the protective
value of error 009.
(stage II)
106
Abnormal grounding.
Neither the PE terminal
on the AC connection
block nor the second
PE terminal on the
enclosure is reliably
connected.
Check whether there is a reliable inverter
grounding line, if there is access to the
ground, and the fault persists, please
contact Sungrow Service Dept.
200
Bus hardware
over-voltage fault.
The bus voltage
exceeds the protective
value.
1. Wait for inverter recovery after bus
voltage lower.
2. If the fault occurs repeatedly, contact
Sungrow Service Dept.
201
The bus voltage is too
low.
1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact
Sungrow Service Dept.
202
PV hardware
over-current fault.
The PV1 or PV2
current exceeds the
protective value.
If the fault occurs repeatedly, contact
Sungrow Service Dept.
203
The PV input voltage
exceeds the
bus
voltage.
Check the functionality of the PV connection
terminals.
306
Input and output power
mismatching fault.
If the fault occurs repeatedly, contact
Sungrow Service Dept.
315
PV1 current sampling
fault.
Channel sampling anomaly.
Contact Sungrow Service Dept.
316
PV2 current sampling
fault.
Summary of Contents for SG2K-S
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