Sungrow SG2K5TL-S, User Manual

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