GE WattStation Wall Mount User Manual page 12

WattStation Wall Mount User Manual
There are six types of faults that can occur:
1. Ground Fault, Self-correcting
2. Contactor closed when not charging Fault, Non-correcting
3. Self-Test Fault, Non-correcting
4. Overvoltage/Undervoltage Faults, Self-correcting
5. Overload Fault, Non-correcting
6. Fan Fault, Non-correcting
Ground Fault:
WattStation can detect the presence of ground faults with a threshold of 15–20 mA
during the charging cycle. Once a ground fault is detected, WattStation will stop charging
the vehicle and the fault status indicator will turn red.
If four (4) such attempts to restart charging have occurred, WattStation will lockout the
station. The lockout will prevent any vehicle from being charged until the plug has been
disconnected from the vehicle. The fault indicator will illuminate as solid red. It is highly
recommended that service personnel examine the EV (electric vehicle) and/or the
charging cable to determine the cause of the multiple faults before re-energizing.
If a ground fault is present immediately after WattStation begins charging, the unit will
stop charging and immediately lockout the station. The lockout will prevent any vehicle
from being charged until the plug has been disconnected from the vehicle. The fault
indicator will illuminate as solid red.
Contactor closed when not charging Fault:
WattStation internally monitors itself to ensure that it is only supplying power to the
connector when it is in a charging cycle. If WattStation is supplying power to the
connector in a non-charge cycle, WattStation will lockout. The lockout will prevent any
vehicle from being charged until power has been cycled. The fault indicator will illuminate
as solid red.
Self-Test Fault:
WattStation internally monitors its operating performance. If there is a failure of its
performance, WattStation will lockout. The fault indicator will illuminate as solid red.
Overvoltage/Undervoltage Faults:
WattStation monitors line voltage and cuts power to the EV if the voltage goes out of
range. After one (1) minute, it rechecks the voltage and will automatically re-enable
charging if the voltage returns to an acceptable range. The fault indicator will illuminate
as blinking red.
Overload Fault:
WattStation monitors the current being drawn by the EV. If this current exceeds the
capability of the unit's fuse, charging will be interrupted and the fault status indicator will
illuminate and turn solid red. Disconnecting WattStation connector from the EV can reset
this fault.
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