How to fix my Tefal Pro Express 5.5 Bar SteamIron Generator?

Taking longer than usual to reach temperature. When I press the steam button a lot of water is coming out soaking the item that I am trying to Iron, plus, the water is dirty. I have an anti calc feature but this is just a long tube you pull out and rinse under the tap. Not a lot of scale on it at all really. Always do the calc clean when the light comes on and I always re-set the iron. This is the 2nd Tefal steam generator that I have purchased and both have done the same thing !!! Can anyone help out on this please as I dont really want to go and buy another one ??!!!!