Sungrow Error Code 014 – Meaning, Causes & Solution -... | solardiagnostics.org

Technical Background:

The Sungrow inverter triggers Error 014 due to detected DC overvoltage at its input. This condition can arise when the voltage from the solar array exceeds the inverter's maximum allowable input voltage. The inverter continuously monitors the insulation resistance (RISO) and ground fault conditions to ensure safe operation. If the incoming voltage from the array surpasses the rated thresholds, the inverter will enter a protective mode, halting energy conversion to prevent damage to its internal components and ensure safety.

Symptoms:

When a Sungrow inverter displays Error 014, users may observe the LED indicator flashing a specific pattern, often in red, indicating a fault condition. In addition, monitoring apps may show alerts for DC overvoltage, and the system's production may drop significantly, indicating that the inverter has shut down to protect itself from potential damage.

Possible Causes:

Excessive solar irradiance causing voltage spikes in the array.
Faulty or degraded solar panels resulting in increased output voltage.
Incorrectly configured string voltage settings in the inverter.
Poor connections or damaged cables leading to voltage irregularities.
Malfunctioning bypass diodes in the solar modules.
Environmental factors such as snow or debris causing shading and voltage fluctuations.

Solution:

1

Use a multimeter to measure the voltage at the DC input of the inverter to verify if it exceeds the specified limits.
2

Inspect all connections from the array to the inverter, ensuring they are tight and free of corrosion.
3

Check the configuration settings of the inverter to confirm that the string voltage settings match the specifications of the solar array.
4

Examine each solar panel for physical damage or signs of degradation; replace any faulty modules.
5

Inspect bypass diodes on the modules for functionality; replace if necessary.
6

If voltage spikes are caused by environmental conditions, consider installing shading devices or adjusting the array angle.
7

Document all findings and adjustments in the maintenance log for future reference.

Safety Warning:

Always consult a licensed electrician or certified solar installer when troubleshooting electrical components to ensure safety and compliance with local codes.

Prevention:

To prevent future occurrences of Error 014, regularly inspect the solar array and inverter connections for integrity and cleanliness. Ensure that the inverter's firmware is updated and that the system is configured correctly for the specific array setup. Additionally, consider seasonal maintenance checks to clear any debris that may impact solar performance.

Frequently Asked Questions

•What does DC Overvoltage mean in my inverter?

DC Overvoltage indicates that the voltage from the solar panels exceeds the inverter's maximum input limit, which can cause damage. It's essential to address this issue promptly to ensure system safety.

•How can I prevent DC Overvoltage in my system?

To prevent DC Overvoltage, ensure proper installation and configuration of your solar panels. Regular maintenance and monitoring can also help identify potential issues before they escalate.

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Frequently Asked Questions

•What does DC Overvoltage mean in my inverter?

•How can I prevent DC Overvoltage in my system?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention: