56 Error resolution and maintenance
Code Error description
Effect
Action
F2
Internal error
Charging not possible
x
Perform restart by pressing reset push button
(< 3 seconds)
F3
DC residual current detected
Charging not possible
x
Check internal RCCB for the charge point and switch on
again
x
Disconnect the charging connector from the EV and
reconnect it
x
Perform restart by pressing reset push button (<
3 seconds)
x
Check wallbox with vehicle simulation adapter
x
Get EV checked by specialist workshop
F4
Internal communication error
Charging not possible
x
Perform restart by pressing reset push button
(< 3 seconds)
F5
Locking error
Charging not possible
Locking not possible:
x
Disconnect the charging plug from the charging socket
of the wallbox and reconnect it
x
Check the charging plug for dirt
x
Use a different charging cable
Unlocking not possible:
x
Switch the wallbox off
x
Disconnect the charging plug from the charging socket
of the wallbox
F6
Proximity pilot signal out of
valid range
Charging not possible
x
Disconnect the charging connector from the EV and
reconnect it
x
Use a different charging cable
F7,
F8
Controller pilot signal out of
valid range
Charging not possible
x
Disconnect the charging connector from the EV and
reconnect it
x
Use a different charging cable
F9
Overcurrent detected
Charging not possible
x
Disconnect the charging connector from the EV and
reconnect it
x
Get EV checked by specialist workshop
F11 Contactor / relay does not
close
Charging not possible
x
Disconnect the charging connector from the EV and
reconnect it
x
Perform restart by pressing reset push button
(< 3 seconds)
F13 Control by default at terminal
EN1
(note)
Reduced charging current
x
Check setting for external load shedding in
ABL
Configuration App
x
Check external control unit (e.g. FNN control box or
similar)
F14 Overtemperature
Charging not possible or
reduced charging current
x
Ensure better shading of the wallbox at the installation
site
F15 Phase imbalance detected
Reduced charging current
x
Get EV checked by specialist workshop
x
Limit the maximum charging current to 16 or 20 A in the
ABL Configuration App
(Extender stand-alone only).
