Why Are My LED Lights Not Working? Five Reasons Why Your LED Lights Might Not Work
Failed LED lights can become a big problem on construction sites. A shop full of display lights not working is a disaster. A hotel room not working for an inspection is a disaster. A contractor returning to a completed job after handover is a disaster. For wholesalers, contractors and project buyers the main task of replacing a single failed light point becomes the task of finding the cause of the failure.
Many common faults with LED lights are caused by the same few errors. Firstly, it is essential to ensure the correct driver has been selected for the individual LED product. Secondly, check for loose wires and ensure the correct wiring configuration is in place. There is also a risk of overloading the circuit with too many lights. Dimmers are not always compatible with LEDs and can cause problems. Heat build-up can also occur within the fitting, so it is wise to check for blockages. By checking these simple errors, troubleshooting of LED lights is made easier.
LED Power Supply Problem
Why the Power Supply Matters
Power supply not working. If an LED light does not turn on, it is often due to problems with the power supply. If an LED fixture requires a driver to maintain a constant voltage and current, then a driver that is too small, is defective or is not the correct type for the fixture will cause the light to not turn on at all, go on and off, be dim or flickering.
This is typical in project lighting. 48V magnetic track lights require a proper power source. A 48V system with too many fixtures off one driver will shut down. On site people often mistakenly assume the problem is with the lamp, when the truth is the load was not properly planned.
How to Check an LED Driver Not Working Issue
Always start by checking the label on the driver for voltage, wattage, current, dimmability and system type. LED lights that have power but do not function should have their driver output inspected by a qualified person. It is important to check driver matching for bulk orders before they are delivered instead of waiting for complaints to arise.
Faulty LED Wiring or Loose Connections
Why Wiring Problems Cause Failure
Issues with wiring of LED lights can cause problems such as LED lights not turning on, flickering, buzzing or giving off very little light. This can occur with loose connections of the LEDs. This can occur in fixtures such as track lighting, ceiling lights and long runs of lighting. Sometimes a fixture will work when first tested and then fail when the track is moved or the ceiling is completed.
LED lights flickering when a cable or connector is touched usually indicates a connection problem.
What Buyers and Installers Should Notice
For B2B buyers, wiring quality is part of product quality. Rails, adapters, connectors, and installation guides should match the same system. When buying LED track lights, magnetic track light systems, LED downlights, or related parts in bulk, the full system should be checked together.
Overloaded Circuit or Overloaded LED Driver
Why LED Lights Flash or Shut Off
When an LED driver is overloaded, the lights may start to flicker, dim or even switch off completely. This is in contrast to the low power usage of the LEDs themselves and can happen quickly in retail stores, hotels and showrooms where extra spotlights are brought in at the last minute. It is important to update the power plan to account for the increased total load of lighting.
How to Prevent Overload Problems
It’s also important to sum up the total wattage of the lights prior to the installation. Also, leave some margin, as commercial lighting can be running 8-14 hours a day. By doing this you will prevent your LED lights from burning out and the whole system will remain stable.
LED Dimmer Compatibility Issues
Why LED Lights Flicker on a Dimmer
Most existing dimmers were designed for other types of lamps. In hotels, villas, restaurants, offices, and also in upscale stores buzzing, flickering, low light, or uneven dimming of LED lamps can occur when dimmer, driver, and fixture are not of matching quality.
How to Choose an LED-Compatible Dimmer
Dimming Method For Bulk Purchasing Check before buying in bulk the dimming method for the luminaires you want to purchase and the corresponding dimmer required. Check on a sample circuit before starting the whole job.
Heat Build-Up and Poor Installation
Why LED Overheating Reduces Lifespan
Overheating of LEDs can be a hidden problem. Most people know that LEDs use less power than traditional lighting but what they don’t know is that they can still get very hot. And heat is destructive to the components of an LED including the chip, driver and other internal parts. All of these components can be damaged if they are not allowed to cool and premature failure can occur if they are trapped inside a poorly designed fixture with inadequate air flow. This can happen for a number of reasons including a sealed fixture, a crowded ceiling, a fixture with a weak or poorly designed housing or simply by being installed incorrectly.
How to Reduce Heat-Related Failure
When purchasing LED lighting, the buyer should check the housing, heat sink, driver position and use scene for the lighting. For track lighting and magnetic lighting systems, also check the connection of the rail to the fixture. A very cheap product is not always a good deal for a project where you need good, stable light for years.
What to Do When LED Lights Have Power But Still Do Not Work
A Practical Troubleshooting Approach
When LED lights have power but are not working it is generally best to investigate step by step. One non functioning fixture could potentially be damaged. Several non functioning fixtures on one circuit are more likely to be a problem with the power supply, LED wiring fault, excessive current or dimmer incompatibility. It is best to check the fixture, the driver output, the wiring connectors, the amount of current on the circuit and the type of dimmer used before making any repairs.
About Foshan Sampo Lighting & Electric Co., Ltd.
A Professional LED Lighting Manufacturer for Project Buyers
Foshan Sampo Lighting is a high-technology company, which is specializes in research & development, OEM, ODM, sales and after sales service for LED track lights, LED lighting tracks, LED downlights and their relevant parts & accessories. The company is located in Foshan city, which is one of key manufacturing cities in Guangdong-Hong Kong-Macao Greater Bay Area, and the company is based in an industrial zone of approximately 29,800 square meters. There is a professional engineering team, which consists of more than 200 experienced technicians.
Sampo Lighting offers 220V magnetic track light systems, 48V magnetic track light systems, semi-flexible magnetic track light systems, ultra-narrow magnetic track light systems, ultra-thin magnetic track light systems and T10 square tube lights. Suitable for Retail Stores, Offices, Hotels, Art Galleries, Villas and Contemporary Homes.
Conclusion
LED lights stop working quickly for a few reasons. Problems with the LED power supply, faulty wiring for the LED lights, overloaded or failing drivers for the LED lights, incompatibility with the dimmer for the LED lights and too much overheating of the LED lights are typical reasons for the problem. For wholesalers, contractors and buyers of projects it is important to select matching products for your projects to minimize potential repair work and maintain customer confidence.
FAQ
Q1:Why are my LED lights not working after installation?
A:LED lights can fail after installation, possibly due to incorrect power supply, loose connections to the LEDs, faulty wiring of the LEDs, overloaded LED driver or incompatibility with used dimmer.
Q2:How do I know if my LED driver is not working?
A:An LED driver may be faulty if the lights do not turn on, flash once, flicker many times, or look much dimmer than normal.
Q3:Why are my LED lights flickering on a dimmer switch?
A:Dimmable LED lights flickering on a dimmer switch typically mean that the dimmer is not compatible with the specific LED light or lamp driver.
Q4:Why do my LED lights burn out quickly in commercial projects?
A:LED lights can burn out quickly if exposed to excessive heat, insufficient airflow, an over loaded circuit, an incorrect driver or a poor installation.
