I have recently installed 24 of 4 watt LED Lights in a holiday house. They are powered through a 5Kw inverter via 12 x 225Amp deep cycle batteries and 6 x 170 Watt solar panels.

Most switches are double switches , to 2 separate lights.
When certain lights are turned on , others not turned on , flash intermitently and this keeps happening.

I have to turn off at the mains board , or else there are still lights that flash even when all the switches are off.

Someone mentioned , voltage stabilisers / flicker controls ?

Please help

The issue I would suspect is with the switches. Exactly what switches do you have?