I think I have the same problem, and yes the user manual says to check the fuse on the pcb, but unhelpfully doesn't divulge where the pcb is on a worcester heatslave 20/25. Any ideas? Thanks in advance, and merry christmas.
MOD2
please don't hijack post's it's not even the same boiler
edit:sorry
MOD2
please don't hijack post's it's not even the same boiler
edit:sorry