If the Relay (the green LED by the blue relay pads) or Zone (the green LED by the green zone pads) LEDs Blink this is not a problem.
A slow blink means that the relay is in “Timer” Mode. The relay will perform an automatic shut off usually within the next 2 hours.
If the Blinking is rapid it means that the shut off is about to happen and that if an override button is not pushed soon the relay or zone will in fact turn OFF.
To prevent the relay or zone from turning off one may press the associated override switch. Pressing the relay button or zone button on the control card will not extend the time, it will just turn off the relay. One can then turn it back on again to restart the timer.