Hi, Thanks for your replies.... this is probably a really stupid question but my husband took the panel of the tub off, just to see what is involved in changing the irons ( it appears we have version 7) and he noticed the wiring, according to documents the wiring for the onzen should be black to black and white to white, is this correct? and the stupid part of the question.....if it is not wired that way, ie white to black on both will this stop it working? we do not want the expense of new irons or upgrades if it is just a matter of wrong wiring. Any help would appreciated. Oh and regarding getting local help? ..... STILL WAITING!