Troubleshooting guidelines
Condition
Potential cause
Solution/action
Push-to-test switch will
not trip circuit breaker
Circuit breaker is OFF/tripped.
Turn circuit breaker ON. Reset the breaker
by switching it OFF and then ON.
Load center is not energized.
Check to be sure load center is energized.
Load center neutral (pigtail) is not connected to the
neutral bus bar.
Check neutral (pigtail) connection.
Circuit breaker is damaged.
Replace circuit breaker.
LED turns ON or Blinks
before circuit breaker trips
(indicated by handle in
center/trip position).
One of the poles of the circuit breaker is not powered
or is somehow disconnected from the Line side.
Fix connection issue.
Replace circuit breaker
This condition indicates that GFCI lost its ground
fault sensing capability due to a sensing circuit
failure.
Replace circuit breaker.
LED turns ON or Blinks
continuously.
This condition indicates that GFCI lost its ground
fault sensing or trip capability due to a sensing circuit
failure.
Replace circuit breaker.
Breaker trips upon being
energized.
Neutral (White) Wire is grounded on the Load Side of
the GFCI.
The neutral ground must be cleared for
proper operation of the GFCI.
Breaker trips upon being
energized.
Excessive leakage to ground. Leakage currents in
excess of the trip level of the GFCI Self-Test 6 milliamp
sensitivity between live parts of the system wiring
and ground, or between the live side of wiring within
equipment and its housing.
The leakage to ground must be cleared
for proper operation of the GFCI.
Breaker trips upon being
energized.
Swimming Pool Circuit — Connect only to swimming
pool equipment that has been installed in accordance
with the 1965 or later National Electrical Code.
Breaker trips upon being
energized.
One of the poles is not powered or is disconnected
from the GFCI Self-Test’s Line side.
Both the poles must be connected and be
powered simultaneously.
Breaker trips when random
loads are applied to
apparently unprotected
circuits.
Multi-Wiring (Shared neutral wiring) — When the
GFCI neutral wire is common to two or more separate
circuits, the GFCI will trip when a load current exists
on any of the other sharing circuits. This is an
insidious problem and may not be detected until
someone plugs in a receptacle or imposes some other
load in some remote part of the building.
Some shared neutral circuits can be
successfully protected by using a 2 pole
GFCI breaker. Other forms of shared
neutrals can only be corrected by some
rewiring. This GFCI must have its own
private circuit.
GFCI self-test breaker functional checks
Unplug all items from the receptacles in the circuit. Reset the breaker by switching it OFF and then ON.
1. If the breaker trips, go to step 2.
If LED turns on or blinks continuously or LED turns on or blinks and the breaker handle moves to TRIP position,
go to step 3.
If breaker remains in the “ON” position, go to step 4.
2. If handle moved to the TRIP position in step 1:
• First move handle to “OFF” position and TURN OFF POWER TO PANEL.
• Disconnect “LOAD POWER” and “LOAD NEUTRAL” wires from breaker.
• Restore power to panel and move breaker handle to the “ON” position.
If handle now remains in the “ON” position and trips when TEST BUTTON is depressed, GFCI breaker is operating
properly and there is a ground fault in the system (or) one of the poles of GFCI Self-Test are not connected/powered
from the Line side. Locate ground fault or connect/power-up both the poles, remedy and again perform installation and
functional checks.
3. If the LED turns on or blinks continuously or LED turns on or blinks and the breaker handle moves to TRIP position, then
replace the GFCI breaker. This LED is indicating that the GFCI breaker is no longer capable of providing protection.
4. Push TEST BUTTON. If the handle moves to the “TRIP” position and load is disconnected, the GFCI Breaker is operating
properly. To reset breaker, move handle to “OFF” and then to “ON” for normal operation. The issue is with one of the
items you unplugged or disconnected.
For troubleshooting or service related questions, contact ABB at 800-782-8061
or at [email protected]
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