I HAVE JUST FITTED MY 9.5KW ELECTRIC SHOWER AND WHEN I TURN ON THE POWER THE NEON LIGHT ON THE UNIT IS DIM AND FLICKERS THEN WHEN I TURN ON THE STOP/START BUTTON ON THERE IS NOTHING AND THE POWER LIGHT GOES OUT THEN I PRESS THE STOP/START BUTTON OFF AND THE POWER LIGHT COMES BACK ON AND AGAIN IS DIM...