What does abnormal auxiliary power mean for Huawei Inverter?
When your Huawei SUN2000 inverter generates an alarm for abnormal auxiliary power, it will shut down automatically. Once the fault is resolved, the inverter will restart automatically. If the alarm occurs repeatedly, contact Huawei technical support.
How to troubleshoot abnormal string 1-8 on Huawei SUN2000-43KTL-IN-C1 Inverter?
To troubleshoot an abnormal string (1-8) on your Huawei Inverter, start by checking if the current of the affected PV string is significantly lower than the others. If it is, check for shading. If the string is clean and unshaded, inspect the PV modules for faults.
What causes abnormal grid frequency in a Huawei SUN2000-43KTL-IN-C1 Inverter?
An abnormal grid frequency on your Huawei SUN2000 inverter can be caused by temporary power grid issues, in which case the inverter should automatically recover. If the alarm occurs frequently, verify that the grid frequency is within the acceptable range. If it's not, contact your local power operator. If the frequency is within range, you can modify the grid overfrequency and underfrequency protection thresholds using the SUN2000 app, SmartLogger, or NMS, but only with the consent of the local power operator.
What to do if Huawei Inverter strings are reversed?
If your Huawei SUN2000 inverter indicates reversed strings, first check if any PV string is connected in reverse. If so, wait until night when solar irradiance is low and the PV string current is below 0.5 A. Then, turn off both DC switches and correct the PV string connection. Also, check if the number of PV modules connected in series is too small; if it is, increase the number of modules.
What to do if my Huawei Inverter has a cabinet overtemperature?
If your Huawei SUN2000 inverter reports a cabinet overtemperature, first check the ventilation and ambient temperature around the installation area. If ventilation is poor or the ambient temperature is too high, improve ventilation and heat dissipation. If both ventilation and temperature meet requirements, contact Huawei technical support.
How to fix low insulation resistance on Huawei SUN2000-43KTL-IN-C1?
To address low insulation resistance on your Huawei SUN2000 inverter, check the impedance between the PV string and the PGND cable. If you find a short circuit, fix it. If the low impedance is due to cloudy or rainy conditions, you can adjust the insulation resistance protection settings via the SUN2000 app, SmartLogger, or NMS.
How to fix Flash Fault on Huawei Inverter?
To fix a flash fault on your Huawei SUN2000 inverter, replace the monitoring board. If the monitoring board is integrated into the monitoring device, replace the entire monitoring device.
What to do if Huawei Inverter software version unmatch?
If your Huawei SUN2000 inverter indicates a software version mismatch, check if you recently performed a software upgrade. If so, upgrade the software to the correct version again.
How to resolve abnormal grounding in Huawei SUN2000-43KTL-IN-C1?
To resolve abnormal grounding in your Huawei SUN2000 inverter, first check that the neutral wire or PGND cable is properly connected to the inverter. Also, if the PV string output is grounded, ensure that the inverter's output side is connected to an isolation transformer.
How do I fix abnormal SPI communication on a Huawei SUN2000-43KTL-IN-C1 Inverter?
To fix an abnormal SPI communication error on your Huawei SUN2000 inverter, turn off the AC output switch and DC input switch. Wait 5 minutes, then turn them back on. If the fault persists, contact Huawei technical support.
General| Model | SUN2000-43KTL-IN-C1 |
|---|---|
| Type | String Inverter |
| Rated Output Power | 43 kW |
| Max. DC Voltage | 1100 V |
| Start Voltage | 200 V |
| Rated AC Voltage | 400 V |
| Output Frequency | 50 Hz / 60 Hz |
| MPPT Efficiency | 99.9% |
| Number of MPPTs | 4 |
| Operating Temperature Range | -25 °C to +60 °C |
| Protection Class | I |
| Protection Degree | IP65 |
| Max. DC Input Power | 52.5 kW |
| Input Voltage Range | 200 V - 1000 V |
| MPPT Voltage Range | 200-1000 V |
| Cooling | Smart Forced Air Cooling |
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