GE Industrial Solutions WattStation Pedestal EVSE Charger Operation and Maintenance - Manual (Page 53)

WattStation™ EV Charger User Manual
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Note: The GF protection circuit is also verified during the controller’s power-up self-test sequence. If
the GF self-test fails at this time, the fault will behave like a hard fault, and cycling AC power will be
required to clear the fault. If the problem persists, verify that the GF CT (with the black and white
body) leads (red and black) are connected to J10 and the self-test wire loop leads (same color) are
connected to J19. Polarity of these leads does not matter.
Code 133 – Overcurrent trip
The charge controller performs a secondary overload protection feature to prevent the internal fuses
or upstream branch feeder breaker from tripping in the case of a defective vehicle. This fault
indicates that the controller has detected an overcurrent condition and tripped. The charging plug
must be removed from the EV socket in order to clear this fault. With power removed, the fuses
should also be checked as some high level fault conditions are too fast for this secondary protection
to prevent the fuses from blowing.
Code 134 – Pilot diode test failed
The SAE J1772 standard requires a diode to be present in the vehicle’s pilot circuit. Prior to every
charge cycle, the charge controller checks for the presence of this diode, and if it is not there will issue
this fault. The charging plug must be removed from the EV socket in order to clear this fault.
Code 135 – Contactor won’t close
Every time the charge controller attempts to close the contactor, it checks immediately afterwards for
the auxiliary feedback on J11 pin 5 to change state. If the contactor auxiliary feedback does not
change state, this fault will be issued. The charging plug must be removed from the EV socket in order
to clear this fault.
Code 141 – IEC cable interlock failure
This fault is not applicable to NEMA WattStation Pedestal.
Code 142 – Fan required to charge
The SAE J1772 standard has an accommodation for electric vehicles, which have batteries that
outgas during charging. These vehicles will take the pilot to State D (i.e. 3V) instead of the normal
State C (6V) to indicate they are ready for charge. If used indoors, facility ventilation is required to
charge these types of vehicles. The charging plug must be removed from the EV socket in order to
clear this fault.
Codes 143, 144, 145, 151, 152 – Communication Controller Failure
If the fault does not automatically clear or by removing the EVSE connector from the vehicle, cycle
power on the WattStation.
8.4 Alarms
Code 153 – Ground fault
This alarm indicates that the charge controller has detected a ground fault condition that exceeds the
allowable levels per UL 2231-2. The WattStation Pedestal implements the CCID 20 protection as
defined in UL 2231-2, which requires a 20mA ground fault to trip in under 1 second (higher currents
require faster trip times). The controller will automatically reclose after a 15 minute delay, up to a
maximum of four times per charging cycle. On the fifth ground fault, the controller will issue code 131
and the charging plug will have to be removed from the EV to clear the fault.