LED lighting is energy-efficient, durable, and popular, but sometimes you may notice your lights unexpectedly flickering. This is not only annoying, but it can also indicate an underlying technical problem. Fortunately, in many cases, flickering LED lighting is easy to fix. In this blog, LedLoket clearly explains why LED lamps can flicker and we provide practical tips to help you solve the problem quickly and effectively.
Table of Contents
1.Using the wrong dimmer
When you switch to LED lighting, your lights might start to flicker, even if the bulbs themselves are new and of high quality. In many cases, the problem is not with the bulbs, but with the dimmer. Many people still use an old halogen or incandescent dimmer to dim their new LED lighting. However, these dimmers are not designed for the low energy consumption of LED bulbs and usually require a minimum wattage to function properly, often around 25 watts.
LED lighting consumes significantly less power to produce the same amount of light, meaning this minimum wattage is often not met. As a result, the lights may flicker, dim erratically, or not respond correctly at all.Fortunately, this issue is easily resolved by replacing the old dimmer with a LED dimmer specifically designed for the lower wattage of LED lamps. This ensures stable lighting, a longer lifespan for your lamps, and a pleasant lighting experience without flickering.
LED lighting consumes far less power than traditional lighting. As a result, the minimum wattage required by old halogen or incandescent dimmers is often not met. This causes the lamps to flicker, dim erratically, or not respond properly at all. The solution is simple: replace the old dimmer with an LED dimmer suitable for the lower wattage of LED lamps. This allows you to enjoy stable light, a longer lifespan, and pleasant, flicker-free illumination.
Example: Suppose you have a halogen dimmer with a minimum wattage of 25 watts and a maximum of 200 watts. Three 25-watt halogen bulbs are connected to it, totaling 75 watts. After switching to 3.8-watt LED bulbs, the total power consumption is only 11.4 watts. This is lower than the dimmer's minimum wattage, causing the lights to flicker. Replacing the dimmer with an LED dimmer will immediately solve this problem.
2. Dimming non-dimmable LED lighting
It often happens that people accidentally purchase non-dimmable LED lighting and then try to dim it anyway. As a result, the lights do not receive enough power to function properly, causing them to start flickering or even turn off completely. This can cause unnecessary frustration but is fortunately easy to prevent.
When you want to dim LED lamps, it is important to always choose dimmable LED lamps that are compatible with your dimmer. Non-dimmable lamps are exclusively intended for use with a standard on/off switch. Attempting to dim them anyway can lead to flickering and a shorter lifespan for the lamp.
The solution is simple: replace your non-dimmable lamps with dimmable LED lamps , or use a regular on/off switch instead of a dimmer. This will ensure stable lighting and prevent malfunctions.
View our dimmable LED lighting!
3.The wrong type of LED Dimmer
A common cause of flickering LED lighting is using the wrong LED dimmer. Even if you have a dimmer specifically designed for LEDs, it may not be compatible with the type of LED lamp you are using. There are different dimming technologies, and not every dimmer is compatible with every lamp. When the dimmer and lamp are not matched, it can lead to flickering, buzzing, or poor dimming performance.
There are two main types of LED dimmers:
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Trailing edge dimmer (RC)
This is the most commonly used type of LED dimmer and works with approximately 90% of all LED lamps. These dimmers ensure stable operation and are silent in use. -
Leading edge dimmer (RL)
This type of dimmer is often used in older installations or with specific types of lighting. Always check the label on the dimmer to see which type you have.
It is important that the dimmer and the LED lamps use the same phase control method. The image shows where you can find the correct product information. On our website, the dimmer type is clearly stated for each product. There are also universal LED dimmersthat automatically switch between trailing edge and leading edge. These are a good choice when you are unsure which technology your lighting uses.
Our recommendation
For reliable operation, we recommend the ION LED Dimmers (the blue dimmers). These high-quality dimmers feature an automatic adjustment function and have been extensively tested with various brands of LED lighting. As a result, they operate stably and without flickering in almost all situations.
View our LED dimmers!
4.A defective driver
Another common cause of flickering LED lights is a defective driver or transformer. The driver ensures a stable power supply to the lamp. As soon as it no longer functions correctly, the voltage can fluctuate, causing the lamp to flicker. You often notice this suddenly: lamps that previously worked without issue start flickering from one day to the next.
There are two types of drivers:
- Internal drivers: these are built into the LED lamp itself.
- External drivers: these are located outside the lamp, usually in or next to the fixture.
When the driver is inside the lamp, the entire lamp must be replaced. If the driver is separate from the lamp, you can replace it individually.In that case, you don't have to discard the entire fixture or lamp, but only replace the defective driver.
In conclusion
Flickering LED lighting can often be easily resolved once you know what to look for. Whether it's an incorrect dimmer, a non-dimmable bulb, a defective driver, or voltage issues: with the right approach, you can once again enjoy stable and comfortable lighting.
Would you like to learn more about LED lighting or find practical solutions for common problems? Continue reading our other blogs below for more useful tips and clear explanations.
