My boiler is intermittently locking out. When I press the restart button it lights and carries on for a while, but it needs resetting periodically. Yesterday I had PlumbForceDirect in to diagnose the problem, but they couldn't find anything wrong and told me essentially I have to wait for the boiler to stop working entirely and then call them back. Charged me £81 for that reassurance! Have I been ripped off? Surely if a boiler isn't working properly it ought to be fixable? The boiler has been well cared for and was last checked by British Gas in June 09.