Hi guys got called out to a boiler giving issues as usual...boiler looks old and time for a change...issues was the boiler was going to 70 80 and then cutting out,,,PCB was replaced and the problem continued... The fan pump working fine...heres what happens when you call for heat, the burner comes alight but the piezo ticking doesnt stop but carries on tills the burners goes out...please experienced folks i needed your valueable input....thanks:wink_smile::wink_smile::wink_smile: suspect the gas valve, falme rectification or the solenoids this boiler had three....so far they are the suspect so i need your direction...anyone tackled similar problem before on this boiler...:banghead: