Fixing Flashing Lights: A Dimmer Troubleshooting Guide Flashing lights can be very annoying. It can make your eyes hurt. It can also make you worry about your home wiring.
Most of the time, a flickering light does not mean your house is in danger. It usually means your bulb and your dimmer switch are not working well together. This guide will help you find the problem and fix it fast. Why Do Dimmer Lights Flash?
Lights flash when the electrical current drops or changes fast. Dimmer switches work by turning the power on and off hundreds of times each second.
If parts of your light system do not match, you see this power change as a flash. Common Causes Wrong Bulbs: Using old bulbs with new switches. Loose Parts: Bulbs that are not screwed in tight.
Wattage Load: Too many lights or too few lights on one switch.
Appliance Interference: Big appliances pulling power on the same circuit. Step-by-Step Troubleshooting
Follow these steps to find out why your lights are flashing. 1. Check the Bulb Type Look at your light bulb. Make sure it says dimmable on the box or base. Regular LED bulbs cannot be dimmed and will flash. 2. Tighten the Bulb Turn off the light switch. Let the bulb cool down. Twist the bulb to make sure it sits tight in the socket. 3. Check for Smart Bulb Conflicts Do not use smart bulbs with a wall dimmer switch. Smart bulbs have their own dimming tech inside. Mixing them with a wall dimmer causes bad flashing. 4. Adjust the Dimmer Low-End Trim Many modern dimmers have a small lever or dial. This is called the low-end trim. Turn the lights down until they flash. Move the trim dial up until the flashing stops. When to Call a Professional
Sometimes the fix requires a trained electrician. You should call an expert if you experience any of the following: Whole-House Flashing: Lights flash in every room at once. Burning Smells: You smell plastic burning near the switch. Sparking: The switch sparks when you touch it. Buzzing Sounds: The wall switch makes a loud humming sound.
To help give you the best advice for your specific situation, tell me a bit more about what you are experiencing:
What type of bulb are you using? (LED, CFL, or old incandescent?)
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