Goodwe Error Code 07 – Meaning, Causes & Solution -... | solardiagnostics.org

Technical Background:

Error 07 indicates a relay self-test failure, which is crucial for the inverter's operational safety. During the self-test, the inverter checks the relay's ability to switch and maintain a connection. If the relay fails to operate correctly, it may indicate a problem with the relay's internal components or external electrical conditions. This fault can be triggered by inadequate voltage levels, grounding issues, or even software errors that prevent the relay from functioning as intended.

Symptoms:

The Goodwe inverter displays error 07, typically indicated by a flashing LED pattern or a notification in the monitoring app. Users may observe a drop in energy production or complete shutdown of the inverter, rendering it unable to feed power into the utility grid.

Possible Causes:

Relay malfunction due to internal component failure.
Insufficient voltage detected during relay self-test.
Faulty connections or corrosion at the relay terminals.
Grounding issues affecting relay performance.
Software glitch in the inverter firmware requiring an update.

Solution:

1

Disconnect the inverter from the utility grid and isolate the array using the MC4 disconnect tool.
2

Use a multimeter to check the voltage across the relay terminals to ensure it meets specifications.
3

Inspect all connections at the relay for corrosion or loose contacts and clean or tighten as necessary.
4

Verify the grounding system to ensure proper continuity and resistance levels.
5

If the issue persists, check for firmware updates on the Goodwe website and apply if necessary.
6

Reconnect the inverter to the utility grid and monitor for any recurrence of the fault code.

Safety Warning:

Always consult a licensed electrician or certified solar installer when performing maintenance or troubleshooting on solar inverter systems.

Prevention:

Regular maintenance of the inverter, including periodic inspections of electrical connections and grounding systems, can prevent future occurrences of error 07. Additionally, keeping the inverter firmware updated ensures that any potential software-related issues are resolved promptly.

Frequently Asked Questions

•What does Goodwe error code 07 indicate?

Goodwe error code 07 indicates a relay self-test failure, which may affect inverter performance. It is crucial to address this issue promptly to ensure system reliability.

•How can I perform a relay self-test?

To perform a relay self-test, access the inverter's settings through the display or monitoring app. Follow the prompts to initiate the self-test and observe any error messages.

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Frequently Asked Questions

•What does Goodwe error code 07 indicate?

•How can I perform a relay self-test?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention: