This electrical question came from: Bob, a Homeowner from Los Angeles, California. The light will say on for about 3 minutes the go off and immediately come back on. The light is a photocell dusk/dawn type light. If the light is set up for it, turning the light on and off rapidly two or three times will cause it to blink continuously. The lights may also be turning off frequently at night because the sensors are detecting the light from other sources or from the lights themselves. If the light comes on and then goes off a few minutes later, first replace the lamp. I had observe that the new light fixture goes on and off. But also, a flash with a dimmer can signal a dimming problem. I replace an old outside light fixture with a new Area dusk to dawn fixture. The electrician replaced an outdoor light under a carport which is a permanent part of the house structure shared by a common roof. The LED flood towns may flicker, if there are voltage changes in the fixture 's wiring. If it does, you’ve found the problem. The Emergency Light Switch insures your house will be found as quickly as possible.Simply replace the front porch light switch with the 911 Emergency Light Switch. Dimmer switches are a common source of flickering with LED (light-emitting diode) bulbs. A poor connection between the light or fixture switch and the bulb can cause flickering. Intermittent flickering can be a sign of technical problems. Try gently wiggling the switch to see if this causes a flicker. Moreover, the flickering can leave you clueless about the problem that is causing it. LED flood lights flashing on and off or blinking fast can be quite troublesome. It has three positions (on, off, flashing) and it installs and functions just like a standard light. It has three positions (on, off, flashing) and it installs and functions just like a standard light. The main reason Dusk to Dawn lights don't turn on or stay on is that the sensor is frozen in the on or off position. There was a power outage an hour or 2 before, and now my front porch light keeps blinking on and off rapidly (switch is rapidly cycling on and off - you can hear the relay going on/off) He tried another similar type light and it did the same thing. The current fluctuations are, to blame for the occasional flickering or flashing ofAn LED flood light. It come on about 5 min, then back on with 5 min., what could be the problem? The Emergency Light Switch insures your house will be found as quickly as possible.Simply replace the front porch light switch with the 911 Emergency Light Switch. If your light is already flickering, try toggling the switch on and off and see if … A faulty fixture switch or a lose light plug can also cause difficulties. It this doesn't correct the problem, then the sensor would need changing. Solutions range from tapping the light to replacing parts. I purchased and installed a new 100-watt high-pressure sodium lamp (and left the new sensor in) and it was like a new light … In general, flickering can be caused by multiple factors:(troubleshooting led flood light flashing on and off) 1.Check your electrical current. Outdated Dimmer Switches . The GE Z-wave paddle dimmer switch that controls my front porch light literally JUST exhibited the same exact symptoms that you just described! Older dimmer switches and current conventional dimmers are designed for use with standard incandescent light bulbs, and they often don't work well with LED bulbs. If your LED is controlled by a dimmer, the easiest fix is to buy a good-quality "dimmable" LED bulb. An outdoor flood light … I do not know why your neighbors light flashes every night, but a blinking porch light is used to signal police or ambulance during an emergency. Faulty Light or Fixture Switch. It will keep doing this. 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