I am trying to source a part for the above heater, my local plumb base has had no luck and I have trawled the Internet for hours, so am now turning to you lovely abers for help.
The part is a low water pressure switch, if anyone knows where I can get one I would be most grateful.
It is a chaffoteux et Maury wall mounted, mains gas connected heater that sits on a wall and heats water for a sink below it, the bloke at plumb base gave me the Celt * B thing and said that was what it was, sorry.