Huawei SUN2000-15KTL-50KTL Series

Questions and Answers

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Kristina JimenezAug 12, 2025
How to fix DC Over Voltage on Huawei SUN2000-15KTL-50KTL?
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  Diane HenryAug 12, 2025
  If your Huawei Inverter SUN2000 is showing a DC Over Voltage alarm, it means the voltage from your PV modules is too high. To fix this, you need to reduce the number of PV modules connected in series for each PV string (1 and 2, 3 and 4, or 5 and 6) until the open-circuit voltage is at or below the inverter's maximum input voltage. Once you've adjusted the PV array configuration, the SUN2000 alarm should disappear.
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Dr. Chelsea CunninghamAug 16, 2025
Why does my Huawei Inverter show Abnormal Grid Voltage?
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  hanthonyAug 16, 2025
  If your Huawei Inverter is showing an Abnormal Grid Voltage error, it could be due to a couple of reasons. If the alarm seems to be a one-time occurrence (Cause ID = 4), it might be due to a temporary issue with the power grid, and the SUN2000 should automatically return to normal operation once the grid stabilizes. However, if the grid-tied point voltage is consistently too high (Cause ID = 16/19/26), you should contact your local power operator to investigate the grid conditions.
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Jo McculloughAug 20, 2025
What to do if Huawei Inverter reports Abnormal Invert Circuit?
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  Angelica RodriguezAug 21, 2025
  If your Huawei SUN2000 Inverter displays an Abnormal Invert Circuit error, it could be due to several reasons. If the cause ID is 13, 14, or 16, the SUN2000 monitors its external working conditions in real time and automatically reverts to normal operating status after the fault is rectified. If the Reason ID is 20, check whether the SUN2000 output cables are short-circuited and rectify any fault.
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Amber RobertsAug 25, 2025
How to troubleshoot 'String 1-6 Reverse' on Huawei Inverter?
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  Haley Morgan MDAug 26, 2025
  If your Huawei Inverter SUN2000 reports 'String 1-6 Reverse', first check if the PV string is connected in reverse. If it is, wait until night when solar irradiance is low and the PV string voltage drops below 60V DC. Then, set the DC SWITCH to OFF and correct the PV string connection. Also, check if the number of PV modules connected in series is too small. If so, increase the number of PV modules connected in series to the SUN2000.
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Kevin HickmanAug 29, 2025
What to do if Huawei Inverter shows String 1-6 Abnormal?
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  Kenneth WhiteAug 29, 2025
  If your Huawei Inverter SUN2000 displays a 'String 1-6 Abnormal' message, start by checking if the output current of any PV string is significantly lower than the others. If it is, check whether the PV string is shielded. If the string is not shielded and is clean, inspect the PV modules for faults.
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mcarterSep 2, 2025
Why is my Huawei SUN2000-15KTL-50KTL Inverter showing Cabinet Overtemperature?
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  Deborah CopelandSep 2, 2025
  If your Huawei SUN2000 Inverter is showing a Cabinet Overtemperature warning, check the ventilation and ambient temperature around the installation location. If ventilation is poor or the temperature is too high, improve the ventilation and heat dissipation.
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Brent FinleyNov 7, 2025
What to do if Huawei SUN2000-15KTL-50KTL Inverter reports Abnormal DC Circuit?
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  Jeremy AlexanderNov 7, 2025
  If the Huawei Inverter SUN2000 displays an abnormal DC circuit error, there are several potential solutions depending on the cause. If the cause ID is 3, 10, or 11, the inverter should automatically revert to normal operation once the external fault is resolved. However, if the cause ID is 12 or 15, try turning off both the AC output and DC input switches, waiting five minutes, and then turning them back on. If the problem continues, contact Huawei technical support. For cause ID 16, if there is no PID module in the system, disable PID protection at night and reactive power output at night on the SmartLogger or SUN2000 app. If a PID module is present, inspect it for faults and fix them. Also, verify that the crystalline silicon PV compensation mode of the SUN2000 and the PV module compensa...

Huawei SUN2000-15KTL-50KTL Series Specifications

General

Type	String Inverter
Max. DC Voltage	1100 V
Start Voltage	200 V
Frequency	50 Hz / 60 Hz
Max. Efficiency	98.6%
Protection Level	IP65
Model	SUN2000-15KTL-50KTL
Rated Output Power	15000 W, 20000 W, 25000 W, 30000 W, 36000 W, 40000 W, 50000 W
MPPT Voltage Range	200 V - 1000 V
Number of MPPTs	2
Rated AC Power	15000 VA, 20000 VA, 25000 VA, 30000 VA, 36000 VA, 40000 VA, 50000 VA
Max. Apparent AC Power	16500 VA, 22000 VA, 27500 VA, 33000 VA, 39600 VA, 44000 VA, 55000 VA
Operating Temperature Range	-25 °C to +60 °C
Cooling Method	Natural Cooling
Communication	RS485