The reasons for the occurrence of flickering lights varies when connected to dimmer switch. The following are the common situations and possible causes to flickering issues that may happen to your lamps.
Fast Flickering
Cause and Solution:
The total wattage of the lamps connected to the dimmer switch is lower than the minimum operating power of the dimmer switch. This is due to the reason that the two are connected in series, which may lose control when the current flowing through is too low. Besides, the minimum operation power of a leading-edge dimmer switch is larger comparing to that of a LED lamp. The solution to this issue is either to change a dimmer switch with a lower minimum operating power or to add on to the total wattage of the load connected. To increase the total wattage, users can choose to adopt lamps with higher wattage or to add a dumb load in the circuit.
Dimmer switch may be affected when the switch and the lamp driver are connected and generated resonance. Users can choose to change your device to a dimmer switch with better load compatibility or to confirm the compatibility of the lamp or driver to use in advance.
Slow Strobing
Cause and Solution: The dimmer switch and driver would create resonance after connected, which further affects the dimmer switch. Users can choose to change your device to a dimmer switch with better load compatibility or to confirm the compatibility of the lamp or driver to use in advance.
Random Slow Strobing
Cause and Solution: The power supply of the dimmer switch is not enough because the minimum operating power is too high resulting the lack of total power wattage, which causes the light issue of random slow strobing. Users can add a dumb load within the circuit or change a lamp (or lamps) with higher total wattage so that the total power would exceed the minimum operating power of the dimmer switch.
Flickering at Certain Brightness
Cause and Solution: Lamp starts to flash when the dimmer is dimmed up to max. It is because that the input impedance of the driver is too high, resulting all energy on the driver side. Suggested solution is to change the whole set of lamps or the driver to the lamp.
If your light would flash under certain dimming point, in most cases it happens when leading-edge dimmer switch is adopted, meaning that the dimming compensation parameter in the driver of the lamp has issues. Suggested solution is to change the whole set of lamps or the driver to the lamp.
Breathing at Low Brightness
Cause and Solution: The current ripple coming from the driver goes too high when the brightness is adjusted to a rather low dimming range. Suggested solution is to change the whole set of lamps or the driver to the lamp.
Sudden Flashes
Cause and Solution: The main electricity side has noise that has not been filtered or a big drop in total voltage due to the activation of high wattage electric appliances would possibly result a sudden flash of lights.
Flash when Dimmer Switch is Turned on
Cause and Solution: As the inrush current is rather high when the action of turning on a dimmer switch is being processed, the brightness of lamp would suddenly go up then back to normal right after. Suggested to adopt lamps or drivers with the soft start function.
Dimming Up and Down under Certain Brightness
Cause and Solution: The feedback circuit in the driver is being too slow on reaction. Suggested to change the whole set of lamps or the driver that goes with the lamp.