zappi v2Troubleshooting

  1. Symptom Recognition
  2. Faults

1. Symptom Recognition

Symptom Cause Solution
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 awlays 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 one of the CT terminals in the zappi or any CT input in the harvi
  • Check the Grid CT sensor is installed on the correct cable – see CT Installation
  • Check resistance of the sensor – it should be around 200Ώ when not connected (remove the sensor from the cable before testing resistance)
  • If using harvi check that the CT input has been to Grid in the harvi settings (Linked Devices / Devices in the zappi Advanced Settings menu)
  • Check that the CT input is correctly configured for “Grid”
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 0kW
  • Generation Sensor not installed
  • Install generation sensor and connect to one of the CT inputs
  • Alternatively, if there is no Generation CT, the Generation and House consumption figures can be hidden on the main screen by changing the Icons setting in the Settings / Display & Sound menu

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 you installer or your local technical support.

 

Displayed Message Description Action
Unknown Cable ! zappi has detected an unknown EV cable (untethered units only)

Make sure you are using genuine IEC 62196-2 compliant plugs. Range supported: 32A, 20A, 13A.

zappi will automatically retest the cable after 5 seconds.

If the issue persists unplug the cable, check for dirt in the plug and try again.

Pilot Problem ! zappi has detected an issue with the “Control Pilot” signal on the cable between the zappi and the EV.. zappi will automatically retest the cable after 5 seconds.

If the issue persists unplug the cable, check for dirt in the plug and try again.

Lock Failure !

Fault Code 23

The socket lock actuator couldn’t lock/unlock the inserted plug as expected (untethered units only). This message can happen when the plug is not fully inserted or if it is twisted or pulled from the socket.

Push the plug fully into the zappi to release the plug, then press and hold the  button for 3 seconds to reset the unit.

PE Fault !

Fault Code 25

zappi has detected a problem with the main earth connection to the unit. The earth is either disconnected or the impedance of the earth connection is too high. Unplug the EV, check the earth connection to the zappi and then hold the  button for 3 seconds to reset the unit.

If the electricity supply is “IT earthed” check the Supply Grid/Earthing menu setting.

Comms Fault !

Fault Code 26

zappi has detected an issue with the built-in protection components. Unplug the EV, press and hold the button  to reset the unit.
SelfTest Failed !

Fault Code 27

The built-in protection devices couldn’t be tested or failed the test prior to a charge. Unplug the EV, press and hold the button  to reset the unit.
Contactor Fault !

Fault Code 28

The relay inside the zappi has a welded contact. The secondary relay is open to make sure that the supply to the EV is isolated. Unplug the EV, press and hold the button  to reset the unit.
RCD Tripped !

Fault Code 29

The internal Earth leakage protection has tripped. Unplug the EV, make sure that the fault has been removed then press and hold the button  to reset the unit.
PEN Fault !

Fault Code 29

The internal protection against the loss of the PEN conductor on the electricity supply has tripped. Unplug the EV, make sure that the fault has been removed then press and hold the button  to reset the unit.
Output Fault !

Fault Code 24

zappi has detected a wrong output voltage. e.g. a voltage has been detected when it should be off. Unplug the EV, press and hold the button  to reset the unit.
Overload !

Fault Code 30

The EV is drawing too much current – the output is switched off. Unplug the EV, press and hold the button  to reset the unit.
Bad Voltage Range !

Over Voltage !

Under Voltage !

Fault Code 31

zappi has detected that the supply voltage is too high/low and has disconnected the EV to protect it. Unplug the EV, make sure that the fault has been removed then press and hold the button  to reset the unit.
Overheating! The zappi unit is too hot – the output is switched off. Make sure that the zappi is properly ventilated (e.g. has not been covered).

Charge will resume once the unit has cooled down again.

Voltage Mismatch !

Fault Code 32

The output voltage detected by zappi and the built-in protection components is not the same. Unplug the EV, press and hold the button  to reset the unit.

If any of the above faults persist then contact your supplier or myenergi technical support at support@myenergi.com.