Hello I have to ask advice please. I had a call out yesterday worcseter si ii no heat or h/water and water leaking bad. I found the main heat exchanger had a pin hole in so after telling the customers the price would be around £200 just for part and who knows until can fill up and test what the water has done. I give the leak sealer a try and i screwed a self tapper in the hole and its stopped (how long who knows) but the boiler needed hairdrier on it and after it would spark fire but still spark and i fiuxed that the hoit water great but heating it fires but no heat and the hot water pipe gets hot. Diverter or plate heat ex ? advice please boys
