User Manual

Fault Codes
All red blink codes pause for one second, and then repeat.
Light Bar What It Means Details
No Lights Power supply issue,
charging disabled
Verify that the power supply is turned on. If the issue persists, have
an electrician remove the Wall Connector from the wirebox and
confirm that voltage is present at the terminal block using a
multimeter. Record the voltage readings for the following: L1 to
L2/N, L1 to Ground, L2/N to Ground.
Solid red Internal , charging
disabled
Turn the circuit breaker o, wait 5 seconds, and turn it back on. If
solid red light remains, document part number and serial number,
then contact Tesla Energy.
One (1) red
blink
Ground fault circuit
interruption due to
unsafe current path,
charging disabled
Inspect the handle, cable, Wall Connector, and vehicle charge port
for damage or signs of water ingress. Have an electrician check
that ground is not directly connected to a conductor wire in the
branch circuit.
Two (2) red
blinks
Ground assurance fault,
high ground resistance
detected, charging
disabled
Verify that the Wall Connector is properly grounded. The ground
connection must be bonded in the upstream power supply for
proper operation. Check all physical connections, including the
wirebox terminals, electrical panel(s), and junction boxes. In
residential power supplies, check the bond between ground and
neutral at the main panel. If connected to a transformer, contact
the transformer's manufacturer for direction on how to bond the
ground connection.
Three (3)
red blinks
High temperature
detected; charging
limited or disabled
Verify that Wall Connector is connected to Wi-Fi and updated with
the latest available firmware for optimal temperature sensing
functionality. Check the faceplate and cable handle for excessive
warmth. Have an electrician remove the Wall Connector from the
wirebox and verify that the conductors used are sized correctly
and that the terminal block is torqued to specification.
Four (4) red
blinks
Internet connection lost,
online features disabled
Check for objects that could interfere with the area's Wi-Fi signal
strength. Confirm that the local Wi-Fi router is operational. If the
Wi-Fi password was changed recently, follow the commissioning
process on your mobile device to update the Wi-Fi settings.
Five (5) red
blinks
Power-sharing
communication issue,
charging reduced
Check for objects that could interfere with the area's Wi-Fi signal
strength. Follow the commissioning process on your mobile device
to re-link the Wall Connectors for power-sharing.
Six (6) red
blinks
Overvoltage or poor
grid quality detected,
charging disabled
Verify that the power supply is nominal 200-240 volts. If the issue
persists, have an electrician remove the Wall Connector from the
wirebox and confirm that voltage readings are as expected at the
terminal block using a multimeter. Record the voltage readings for
the following: L1 to L2/N, L1 to Ground, L2/N to Ground.
Seven (7)
red blinks
Vehicle overcurrent
detected
Reduce the vehicle's charge current setting. If the issue persists
and the attached vehicle is manufactured by Tesla, record the
vehicle's VIN and approximate time of the fault and contact Tesla.
If the vehicle is not manufactured by Tesla, contact the vehicle's
manufacturer.
WALL CONNECTOR LEDS
38Gen 3 Wall Connector Manual