EO Mini - Colour Guide; Power Up; Normal Operation; Fault Conditions

EO Mini and EO Basic LED Guide
Page 4 of 5
06 March 2019
2 Colour Guide
The LEDs should be interpreted as follows:
2.1 Power Up
When the unit is powered up the following sequence should be observed
State
LED Colour
Notes
Power OFF
Not illuminated
No power is available
Power On
LED solid RED
Initialising
LED pulses BLUE
Unit has started up successfully and is ready to
charge
2.2 Normal Operation
State
LED Colour
Notes
No cable is inserted
LED pulses BLUE
Ready to charge
Cable is inserted
LED pulses GREEN
Charging station is communicating with the vehicle
and trying to start a charging session
LED solid GREEN
A charging session has started successfully
Cable is removed
LED pulses BLUE
Ready to charge
2.3 Fault Conditions
The charging stations can detect certain fault conditions and when a fault condition is detected then
the LED flashes RED a certain number of times to indicate the nature of the fault. The fault codes
are:
LED error codes
Notes
Solid Red
An internal fault has occurred
Two short red flashes
There is no earth connection
Three short red flashes
More than 6ma of DC current has leaked to earth
Four short red flashes
Live and Neutral are connected back to front
Five short red flashes
The mains supply has dropped below 170V
The LED is latching. This means that as soon as a fault is detected, then the fault code is displayed on
LED until the end of the charging session. If the fault disappears during the charging session, then
the LED will continue to display the fault code so that the end user is aware that a fault has occurred.
The LED will only return to normal operation when the cable has been removed at the end of the
charging session. This is designed to indicate to the end user, whether a fault has occurred and
indicates a potential problem with the installation or might explain why the charging session was
interrupted.
Without this functionality, a fault might occur on the installation and disappear before the end user
can be notified.
2.3.1 What should I do if a fault occurs?
Remove the charging cable and verify the LED returns to normal operation (pulsing blue). If this
doesn’t clear the fault then power cycle the charging station by turning off and on the main circuit
breaker (RCD) to the station. If the fault persists then contact the installer as there is potentially and
installation issue that needs to be addressed.