Sungrow SG2KTL-S User Manual page 65

User Manual
Fault
Description
Code
The internal temperature
037
of inverter is too high
038 Relay fault is detected
The insulation resistance
039
is low. (ISO-flt)
Leakage current self-test
041
abnormality
The PV
mode
smartphone application
047 interface
accordance
configuration
connection cabinet.
048 Sampling channel failure
Auxiliary DSP detects grid
053 voltage
protection value
Auxiliary DSP detects grid
054 frequency exceeds set
protection value
Auxiliary
056 leakage current exceeds
set protectino range
Troubleshooting
2. Check whether the inverter operating
ambient temperature is more than the range
indicated in the specification.
3. Check whether AC output power exceeds
the nominal power.
4. If the fault still exists, please contact
Sungrow.
1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact
Sungrow Service Dept..
1. Check whether the positive and negative of
PV panels is short-circuited with ground lead.
2. Wait a moment for inverter recovery.
3. 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..
configuration
set in the
1. Disconnect the inverter.
is not in 2. Re-select PV configuration mode and
with the re-connect PV strings.
in the
1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact
Sungrow Service Dept..
1. Check the grid voltage.
2. If the grid voltage exceeds the permissible
range of inverter protection parameters, ask
exceeds set
utility grid company for solution.
3. If the grid voltage is within the permissible
range, contact Sungrow Service Dept..
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..
1. Check whether there is a grounded fault of
DSP detects
the PV string.
2. If the fault occurs repeatedly, contact
Sungrow Service Dept..
9 Troubleshooting and Maintenance
57