Following on from my post10 days ago (and Penster's yesterday) concerning my Halstead Finest Gold which irregularly locks out (It intermittently locks out on both CH and DHW. Sometimes works perfectly, sometimes goes 5 times in an evening. Regularly serviced. No obviously identifiable problem), the suspected problem of a blocked fan venturi is not the case, as the venturi is spotless. The CORGI engineer suggests it can only now be a faulty PCB. A new symptom is an irregularly running fan - instead of the correct 3-5 second run after termination of DHW, it sometimes doesn't run at all (causing lock-out) or runs for up to 30 seconds. Any further help please?
