What to do if Huawei Controller upgrade failed?
If the Huawei Controller displays 'Upgrade failed or version mismatch', it means the upgrade process was not completed successfully. Try performing the upgrade again. If it fails repeatedly, contact your dealer or Huawei technical support.
What does AFCI self-check failure mean on Huawei Controller?
The AFCI self-check failure on your Huawei Controller indicates that the AFCI self-check has failed. Turn off the AC output switch and DC input switch, and then turn them on again after 5 minutes. If the alarm persists, contact your dealer or Huawei technical support.
Why is my Huawei Controller showing a cabinet overtemperature alarm?
Cabinet overtemperature on the Huawei Controller indicates that the SUN2000 is installed in a poorly ventilated area, the ambient temperature is too high, or the SUN2000 is not operating properly. Check the ventilation and ambient temperature at the installation site. If ventilation is poor or the temperature is too high, improve ventilation and heat dissipation. If those are normal, contact your dealer or Huawei technical support.
What does abnormal residual current mean on a Huawei Controller?
An abnormal residual current on your Huawei Controller suggests that the input-to-ground insulation impedance has decreased during operation. If the alarm occurs accidentally, the external power cable may be temporarily abnormal, and the SUN2000 should recover automatically after the fault is rectified. However, if the alarm persists or lasts a long time, check whether the impedance between the PV string and ground is too low.
What to do about grid undervoltage on Huawei Controller?
A grid undervoltage alarm on the Huawei Controller means the grid voltage is below the lower threshold. Here's what you can do: 1. If the alarm is occasional, it might be a temporary grid issue, and the SUN2000 should recover automatically. 2. If the alarm persists, check if the grid voltage is within the acceptable range. If not, contact your local power operator. If it is, you can modify the grid undervoltage protection threshold (with the power operator's consent) using the mobile app, SmartLogger, or NMS. 3. If the alarm continues, inspect the connection between the AC circuit breaker and the output power cable.
How to troubleshoot low insulation resistance on Huawei Controller?
Low insulation resistance on your Huawei Controller indicates a short circuit between the PV array and the ground, or that the PV array is in a moist environment with poor insulation to the ground. To address this: 1. Check the impedance between the PV array output and the ground. Rectify any short circuits or insufficient insulation. 2. Check whether the PE cable of the SUN2000 is correctly connected. 3. If the impedance is lower than the specified protection threshold in a cloudy or rainy environment, log in to the app, SmartLogger, or NMS and set the Insulation resistance protection threshold.
What does abnormal grounding mean on a Huawei Controller?
Abnormal grounding on the Huawei Controller indicates that the neutral wire or PE cable of the inverter is not connected, or the output mode set for the inverter is inconsistent with the cable connection mode. Power off the inverter first (turn off the AC output switch and DC input switch, and wait for a period of time). Then: 1. Check whether the PE cable for the inverter is connected properly. 2. If the inverter is connected to a TN power grid, check whether the neutral wire is properly connected and whether the voltage of the neutral wire to ground is normal. 3. After powering on the inverter, check whether the output mode set for the inverter is consistent with the output cable connection mode.
How do I fix a phase wire short-circuited to PE error on a Huawei Controller?
If the Huawei Controller indicates a phase wire short-circuited to PE, it means the impedance of the output phase wire to PE is low, or the output phase wire is short-circuited to PE. Check the impedance of the output phase wire to PE, locate the position with low impedance, and rectify the fault.
Why is the grid frequency unstable on my Huawei Controller?
An unstable grid frequency alarm on the Huawei Controller indicates the power grid frequency change rate doesn't meet local power grid code requirements. Here's what you can do: 1. If the alarm is occasional, it may be a temporary grid issue, and the SUN2000 should recover automatically. 2. If the alarm persists, check whether the power grid frequency is within the acceptable range. If not, contact the local power operator.
What causes string current backfeed in Huawei Controller?
String current backfeed on your Huawei Controller means the number of PV modules connected in series is insufficient, causing the end voltage to be lower than other strings. Here's how to troubleshoot: 1. Check if the number of PV modules connected in series to this PV string is less than that of other PV strings connected in parallel. If so, wait until the PV string current decreases below 0.5 A, then turn off the DC switch and adjust the number of PV modules in the PV string. 2. Check if the PV string is shaded. 3. Check if the open-circuit voltage of the PV string is abnormal.
General| Max. Efficiency | 98.4% |
|---|---|
| Rated AC Output Power | 6000 W |
| Max. AC Apparent Power | 6600 VA |
| AC Grid Frequency | 50/60 Hz |
| Dimensions | 525 x 470 x 146.5 mm |
| Weight | 17 kg |
| Operating Temperature Range | -25°C to +60°C |
| IP Rating | IP65 |
| Max. DC Voltage | 1100 V |
| Start Voltage | 200 V |
| European Weighted Efficiency | 97.8% |
| Cooling Method | Natural Convection |
| Max. DC Power | 9000 W |
| Nominal Output Voltage | 230 V |
Crucial measures for personal protection during operations.
Essential guidelines for preventing electrical hazards.
Guides on selecting the installation location and ensuring adequate space.
Details steps for moving the unit and installing mounting brackets (wall/support).
Safety warnings, cable specs, and component descriptions for electrical connections.
Guides for connecting PE and AC output power cables, including stripping.
Procedures for connecting DC input and optional battery cables.
Covers Smart Dongle, COM port, RS485, grid scheduling, backup box, and NS protection signal cables.
Checklist for verifying installation and safety before powering on the SUN2000.
To Next Page
