zappi v1Troubleshooting

  1. Symptom Recognition
  2. Faults

1. Symptom Recognition

Symptom Cause Soltuion
Display is blank There is no power to the unit Check for correct supply voltage at the supply screw terminals (220 – 260V AC)
In ECO+ mode, the charge does not start, the display is always showing Waiting for Surplus and the export power is 0W Grid Sensor incorrectly installed

Faulty Grid Sensor
No signal from harvi (if used)

Check the grid sensor is connected to CT1 terminals of the zappi or harvi

Check the Grid CT sensor is installed on the correct cable (see Grid CT)

Check resistance of the sensor – it should be around 200 Ώ when not connected (remove the sensor from the cable before testing resistance)

If using harvi, check that the CT input has been set to Grid in the harvi settings (under Devices in the zappi menu)

In ECO+ mode, the charge does not start, the display is always showing Waiting for Surplus, yet the export power is showing correctly Export Margin set too high Check Export Margin setting (default is 0W)
Generation power is always 0.0kW Generation sensor not installed Install generation sensor and connect to CT2 input

Alternatively, the Generation and House consumption figures can be hidden on the main screen by setting CT2 Input in the Advanced Settings menu to OFF

 

2. Faults

If any of the following fault messages are displayed, follow the action described. However, if the problem persists, stop using zappi and call your installer or your local technical support.

Displayed Message Description Action
Ground Fault! The internal Earth leakage protection has tripped Unplug from the EV and press and hold the button to reset the unit
Over Current! The EV is drawing too much current – the output is switched off Unplug from the EV and press and hold the button to reset the unit
Overheating! The zappi unit it too hot – the output is switched off Unplug from the EV and press and hold the button to reset the unit
Allow the unit to cool down before attempting to charge again