A
avalassia
HI. I am not an engineer, but the customer. A cowboy has moved my B Gas 330. Untold problems with wiring have now been fixed. 2 Gas Safe engineers haven't found the fault, but my friend and I are trying to crack the problem, and, if necessary, ask a Gas Safe engineer to fix it. However, boiler cuts out with F5 after seconds, hot pipes. Is it possibly because flow and return pipe is longer now, by about 4 metres? How can it be resolved, please? Do I need a new pump? Thank you.