If you can trick the photocontrol into growling, replace it, or if is new, do not use. A luminaire burning night and day is the most common indication of a failed photocontrol. Coil circuit failure can also cause a day burner. Excess heat can also be passed from the photocontrol line twist lock connector pin through the photocontrol receptacle, weakening the photocontrol twist lock receptacle contacts. This is a common cause of early photocontrol failure.
Heat can also deform the contact mounting in the photocontrol receptacle.
Whenever you replace or inspect the photocontrol, inspect the receptacle for signs of heat damage. Look for charred or deformed plastic or other signs of damage. Replace the fixture if the receptacle is damaged. When installing a photocell into its receptacle, make sure it is locked into position and does not pull out. Make sure the receptacle mounting screws are fully tightened and holding.