New Eaton AFCI/GFCI breaker signals (5 blinks) ground fault, but doesn't trip. How to track it down?
You may not have a ground-fault at all.  The diagnostic LED displays the last recorded trip code, not any current conditions. Reading through the Eaton documentation, it turns out that it may be reporting a fault that was caused during factory testing.


  Upon installation, if the breaker has not experienced a trip that records a code, it will display the last trip code recorded from tests performed at the factory.


So if the breaker is not tripping, there's likely no problem at all.  When you run the diagnostic (by turning on the breaker, or holding the TEST button), the LED will display the last recorded trip code for 30 iterations.  It is NOT displaying any current circuit information, only the most recent recorded trip code.



Trip Codes  


1 Blink = Series Arc
2 Blinks = Parallel Arc
3 Blinks = Short delay
4 Blinks = Overvoltage
5 Blinks = Ground Fault
6 Blinks = Self Test Failure


NOTE: The breaker does not record short-circuit, or overcurrent trips, nor does it record trips caused by pressing the TEST button, or manually switching the breaker off.