if its thermaly protected. thats the same operation a sump pump has when its thermal overloads are opening from to much heat. gie it a min to stop working and the pump resets itself and resumes normal operation. interviles of operation, overload,shutdown,reset,operate , repeat repeat will continue till you burn up your pump, or your integral saftey feature of your light in your case.
but im not sure if grow lights are thermaly protected anyway.