DDSK

Looks like the Diverter Valve may well be the problem. Next step is to get one and find out

Thanks ZAD for your thoughts they are much appreciated.

Cheers

Dave DDSK

Hi ZAD
Okay on getting the gas guzzlers out . I was lucky in as much as a mate of mine had also replaced the pcb on his 105E but without success it turned out to be the temp sensor in his case. Have you noticed the number of guys who have posted this exact problem. I was quite amazed that no one had actually had a reply which solved it despite many good responses. Anyhow thanks for your reply and telling me what they found as that will probably be whats wrong with mine. Funnily enough when I disconnected the HW temp sensor I heard something move, and the CH led lit, albeit the HW fault led was flashing I did get the house warmed up . Thanks again ZAD I appreciate it.

Cheers

Dave DDSK

hi in the end i got the gas board too do it it because iam on duel fuel they fix it for 99 squid and that is cheaper than a pcb/ but it wasnt that what it was in the end was a new diverter head they also fitted a new guid bush too the pressure gauge