just moved and i can only have hot water with central heating on, have i missed some thing.

Bob, December 2009

Rubber Diaphram which operates the divertor valve microswitch needs to be replaced. This happens every 2 years on my one. www.banico.co.uk sell them for 6 pounds on their website. It takes about half an hour to replace provided that you have the right sized allen keys etc.

Reg, January 2010