Sungrow SG2K5-S - Page 82

9 Troubleshooting and Maintenance User Manual
74
Code
Description
Troubleshooting
037
The internal
temperature of inverter
is too high.
moment for inverter recovery.
2. Check whether there is enough space for
convection.
3. Check whether the inverter is in direct
sunlight.
4. Check whether the fan is functioning.
Replace it if necessary (-D series only).
5. Clean the air inlets.
6. If the fault persists, please contact
SUNGROW.
038
Relay fault on the grid
side.
1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact
SUNGROW.
039
The insulation
resistance of PV to
earth is low. (ISO-flt)
1. Check whether there is a reliable inverter
grounding line.
2. Check whether one of the PV strings is
short-circuited with ground.
3. Wait a moment for inverter recovery.
4. If the fault occurs repeatedly, contact
SUNGROW.
041
Leakage current
sampling fault.
1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact
SUNGROW.
043
Inner
under-temperature
fault.
The ambient
temperature inside the
inverter is too low.
The inverter will recover once the ambient
temperature rises above -25℃.
044
Inverter self-test fault.
1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact
SUNGROW.
045
PV1 boost circuit fault.
046
PV2 boost circuit fault.
048
Phase current
sampling fault.
053
The slave DSP detects
that the grid voltage
exceeds inverter
allowable upper limit.
1. Check the grid voltage.
2. If the grid voltage exceeds the allowable
range of inverter protection parameters, ask
utility grid company for solution.
3. If the grid voltage is within the permissible
range, contact SUNGROW.
054
The slave DSP detects
that the grid frequency
exceeds inverter
allowable upper limit.
1. Check the grid frequency.
2. If the grid frequency exceeds the
allowable range of inverter protection
parameters, ask utility grid company for
solution.
3. If the grid frequency is within the
allowable range, contact SUNGROW.