No, the indicator light on a modern GFCI outlet is not required to be on continuously under all operating conditions, as its behavior varies by manufacturer. On many self-testing smart GFCIs, a solid green or red LED indicates normal, active protection status. However, if the indicator light is completely unilluminated while power is active, it typically indicates that the unit has tripped, the internal self-test mechanism has detected a critical fault, or the device has reached the end of its operational lifespan and needs to be replaced. Verification: Check the outlet manufacturer's user manual to confirm whether the specific LED color coding denotes active power, a tripped state, or an end-of-life warning.
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