Hayward Sheer turns off for 3 secs then on

Do you have automation?
If so, are the sheers automated and on a schedule?
Any idea how the sheers were plumbed?
 
To be clear, are you talking about the water flow from the sheers or any lights in the sheers?
If it's the lighting, call your pool builder.
Its possible the lighting may have a program that allows the lights to turn on/off or just remain on when the switch is on.
 
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