I have a 2 gang, 2-way, 2X300W dimmer. This is a replacement for exactly the same model originally fitted - Varilight ISP302. The original worked correctly for approximately six years before failing. I have replaced the dimmer. Each on/off switch controls 3 lights (3x50w) so 300w in total. When I press button 1 there is an audible buzz. When you turn the lights to full power, this bank of lights goes out. If you reduce the power the bank of lights will stay on. With button 2, the audible buzz is less when you put the lights on at fully power but this bank of lights will then flicker.
Any ideas?
Any ideas?