Flashing or Solid Red Light Faults and Errors
A red light on your zappi GLO indicates that the unit has detected a fault. The type of red light can help identify the condition. Follow this guide to understand the different red-light states and the checks that may help resolve the issue.
Understanding the red light
Your myenergi app will provide further information about the fault. Check the app notification for more details about what your zappi GLO has detected.
Lockout state fault
A flashing red light usually indicates a lockout state fault. Your myenergi app will notify you with further details about the fault.
Recoverable fault
A solid red light usually indicates a recoverable fault. Refer to the fault checks below for possible causes and recommended actions.
Important safety information
Only a qualified electrician or installer should carry out internal work. Do not attempt to access or repair internal components yourself.
Faults and recommended checks
Find the fault shown in your myenergi app and follow the recommended checks. Some faults may require further investigation by myenergi Technical Support.
01Comms fault (RCD)
- Reboot the zappi GLO.
- If the issue continues, the unit may need inspection or replacement. Please contact Technical Support.
02Contactor fault
- Reboot the zappi GLO.
- If the issue continues, the unit may need inspection or replacement. Please contact Technical Support.
03G100 local lockout
- Confirm that all G100 settings are correctly applied in the Installer Settings menu.
- Verify CT clamp orientation and ensure all connections are secure.
- Reboot the zappi GLO.
- If the issue occurs 3 times in 30 days, the unit will enter into manufacturer lockout and require further support.
04G100 manufacturer lockout
- See the G100 local lockout checks above.
05Grid CT lost
- Ensure the CT clamp is connected to the correct terminal and the CT setting is matched.
- Check that the CT is clipped securely with no movement.
- Confirm the direction of the CT. The arrow should face the consumer unit.
- Check CT Type is configured correctly on the Installer Assistant app, if necessary.
- Reboot the zappi GLO.
- If the issue continues, the unit may need inspection or replacement.
06Master lost
- Ensure all linked devices are on the latest firmware.
- Consider the installation environment carefully. Sources of electrical or wireless interference may impact performance.
- Reboot all devices in the ecosystem.
- If the issue continues, the unit may need inspection or replacement.
07Output fault
- Confirm the EV is correctly connected.
- Inspect the output cable and port for visible damage.
- Disconnect and reconnect, then restart the charging session.
- If the issue continues, the unit may need inspection or replacement. Please contact Technical Support.
08Overload fault
- Reduce usage of other high-load appliances, such as an oven, heaters or washing machine.
- Review CT configuration and system limits in the Installer App.
- Reboot the zappi GLO.
- If the issue continues, the unit may need inspection or replacement.
09PE fault
- Check that the installation has a proper earth connection.
- Inspect for any loose or damaged earth wiring.
- Reboot the zappi GLO.
- If the issue continues, the unit may need inspection or replacement. Please contact Technical Support.
10RCD tripped fault
- Check the EV charging cable for damage or wear.
- Reboot the zappi GLO.
- If the issue continues, the unit may need inspection or replacement. Please contact Technical Support.
11Bad pilot
- Check the pilot pin on both the EV cable and vehicle inlet for any damage.
- If possible, test with a different EV.
- Reboot the zappi GLO.
- If the issue continues, the unit may need inspection or replacement. Please contact Technical Support.
12Bad voltage range
- If voltages are consistently out of range, report this to your DNO.
- Refer to the zappi GLO datasheet for acceptable voltage limits.
13Not operative
- Check the status of the zappi GLO in the myenergi app.
- Reboot the zappi GLO.
- If the issue continues, the unit may need inspection or replacement. Please contact Technical Support.
14Overheating
- Allow the device to cool naturally for up to 30 minutes.
- Make sure there is good airflow around the unit.
- Avoid installation in direct sunlight or near external heat sources.
15Overlimit
- Wait for household load to naturally reduce.
- Review maximum current settings via the Installer App.
- Check CT clamp installation and configuration.
16Self-test failed
- Reboot the zappi GLO.
- If the issue continues, the unit may need inspection or replacement. Please contact Technical Support.
17Time & Clock Missing
- Connect zappi GLO to a network to sync time and date.
- If the device is offline, use the Installer Assistant app to resubmit time and date.
- If the issue continues, the unit may need inspection or replacement. Please contact Technical Support.
Still experiencing an issue?
Contact myenergi Technical Support
If the recommended checks do not resolve the fault, or your zappi GLO continues to display a red light, please contact our Technical Support team for further assistance.
When contacting us, include the fault message shown in your myenergi app and details of the checks you have already completed.
Contact Technical Support