flow switch hase a pin hole in the plastic body rang firebird about faulty part says just buy a new 1
it is just 2years old they not very good

brian, March 2009

I had the same problem with mine. (I think anyway, split in black plastic valve thing spraying cold mains water out) Fixed it for 6 months with silicon sealer then bit rubber (from inner tube) and lots of zip ties.
It's now leaking again, about to buy new one:
http://www.oilboilerspares.co.uk/store/index.php?act=viewProd&productId=1372

sebrad, June 2010