This is an indication of overloading or incompatible LEDs being used. We recommend the user to drop the load and take few lamps out , power of the mains from the consumer unit and try again.

Also please check Our compatibility chart :

Due to the sheer volume and variety of lamps on the market, there is no possibility for every lamp to be tested.

https://support.lightwaverf.com/hc/en-us/articles/115001447952-Which-lamps-can-I-use-with-Lightwave-dimmers-

We have guidelines of 60W~80W as a maximum rating per gang for one and two gang dimmers, but there have been instances where surpassing this has worked, and instances when falling below this hasn't worked. One company with an 8.5W lamp recommended putting no more than 5 onto a 250W dimmer. When 6 were put onto our dimmer (51W), the dimmer did not operate correctly.