Why would a GFI blink red
Effective June 29, 2015, all GFCI receptacles and circuit breakers must have an auto-monitoring (self-test) feature that automatically conducts a periodic internal test to confirm that the GFCI is able respond to a ground fault. If a problem is detected, the GFCI must trip and deny power or provide a visual and/or audible indication.

Green Status

Dual indicator:


On initial installation - If no power to load, device has been wired incorrectly
Normal operation - GFCI has passed self-test and is providing power


Red Status


Blinking = Initial self-test upon first power up
Solid or blinking = Press TEST and RESET buttons to reset GFCI
If GFCI will not reset OR solid or blinking red continues, replace device


No Power


GFCI in tripped state, no power
Press RESET button
If GFCI will not reset, no power on the circuit


Self-Test Indications: 
If the Status Indicator Light is solid or flashing RED a problem may exist. Press the TEST button to trip the GFCI. If unable to Reset, replace the GFCI. 

NOTE: The status indicator may flash Red at power "ON" and Reset.