Heatline Boilers (VAILLANT) are just about the biggest disaster ever to be sold as durable! LOL.
It's like something you buy for Christmas but is not expected to work in the New Year!
Go to your retailer and demand your money back.
If you have a Heatline Boiler don't waste your money on a single repair. Not one.
Put your money towards a Worcester.
Desmond
September 2010