Was only with them for a month when it happened, i am due to canceling it as the engineer said my cover did not cover the HE ?? but yes i was on the highest package.
Sounds like the 1st visit inspection then if only on contract for 1 month. In which case, if the OP hadnt told BG of a fault then it wouldnt have been covered.
I think the 401 heat exchanger is no longer available through BGs parts sources. One customer on my old patch found one at a breakers and BG fitted it never thought thye would have