i have a Rako system, they have been working fine until recently. in my kitchen/dining room i have 3 dimmers, 1 - the kitchen 2- the dining room 3- the under cabinets Now if i go from everything on (but dimmed) then click off it will leave the kitchen lights on. to switch them off i have to hold the off button. i have reprogrammed the controls but to no effect. also today the kitchen lights started to flash for no reason. (i was boiling the kettle!) the lights are set to switch off at midnight and if i dont turn the kitchen lights off they will remain on the celling lights are 50w down lighters. any suggestions?