Put the CH on boiler made funny humming noise, all worked ok went out came home CH not working. Boiler light on, CH light on flashing slowly, HW light flashing quickly. Water pressure ok, pushed reset button combi will not relight not even making the clicking noise, any ideas please?

Bingbong, ;), February 2010

Needs a new gas valve, or possibly ign pressure needs resetting.

Henry, February 2010