BYD Battery Discharging Error – Troubleshooting &... | solardiagnostics.org

Technical Background:

The inverter triggers a discharging error when it detects conditions that could compromise battery performance or safety. This may include inadequate battery voltage due to excessive discharging, which can lead to irreversible damage. The battery management system (BMS) plays a crucial role in communicating with the inverter, monitoring voltage, temperature, and health of the battery cells. If the BMS detects anomalies like ground faults or over-temperature conditions, it will signal the inverter to halt discharging to prevent further damage. Furthermore, if the insulation resistance (RISO) falls below acceptable levels, it indicates potential leakage currents, prompting the inverter to protect the system by stopping operation.

Symptoms:

Users may observe LED indicators on the BYD battery flashing error codes or solid red lights, indicating a discharging error. Monitoring apps may show alerts about battery voltage levels dropping below safe operating thresholds. Additionally, there may be a noticeable drop in energy production from the solar array, impacting home energy supply.

Possible Causes:

Inadequate battery voltage leading to discharging error.
Faulty battery management system (BMS) causing miscommunication with the inverter.
Ground fault detected in the battery circuit.
Over-temperature conditions triggered by environmental factors or internal faults.
Connection issues at the junction box or between battery strings.
Inverter settings misconfigured for battery operation mode.

Solution:

1

Use a multimeter to measure the battery voltage. Ensure it is within the operational range specified by the manufacturer.
2

Inspect the battery management system for any error codes or alerts. Reset the BMS if necessary.
3

Check for ground faults by measuring insulation resistance (RISO) between the battery terminals and the ground.
4

Verify the temperature sensors and ensure the batteries are operating within the specified temperature range.
5

Inspect all connections at the junction box and between battery strings for corrosion or loose connections.
6

Review inverter settings to ensure they are configured correctly for the battery type and operational mode.
7

If issues persist, consult the manufacturer’s technical support for further diagnostics.

Safety Warning:

Always consult a licensed electrician or certified solar installer when performing diagnostics or repairs on solar battery systems to ensure compliance with safety standards and regulations.

Prevention:

To avoid future discharging errors, regularly perform maintenance checks on the battery and associated components. Ensure proper ventilation to maintain optimal operating temperatures, and routinely inspect all electrical connections for signs of wear or corrosion. Additionally, keep firmware updated on the BMS and inverter to leverage the latest safety features and operational enhancements.

Frequently Asked Questions

•What causes a battery discharging error?

A battery discharging error can be caused by faulty connections, battery age, or software issues. It's important to check all connections and ensure the battery is functioning properly.

•How can I prevent battery discharging errors?

Regular maintenance and monitoring of battery health can help prevent discharging errors. Ensure that the battery is kept within optimal temperature ranges and check for any software updates.

BYD Battery Discharging Error – Troubleshooting & Technical Fix Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Frequently Asked Questions

•What causes a battery discharging error?

•How can I prevent battery discharging errors?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention: