ok i tried the thing again now, the day after... yes bang on 8 seconds, then the boiler fired up, and cut off about 2-3 seconds later. :( sound solonoidy still?
ah - he did say something about the solonoid failing... can this be replaced or is that why he is saying the pump needs replacing? Is it an all in one, or can you get just the solonoid coil bit? Sounds like i probably should get another engineer out as you seem to know quite clearly what you are...
well the enigneer came out today, and the diagnosis of faulty control box sounds most likely (and the engineer said otherwise but i was not so convinced by what he had to say). He reckons the PRV was faulty, and was leaking. Not sure what this has to do with burner lockout. I mentioned what you...
did you find out what it was in the end? my heatslave 16/19 is doing same thing, though only on CH demand, not hot water only. Annoying cos i don't need any hot water as we have electric backup for that but really WOULD like a heat source, short of burning the garden furniture.
are you saying then that it is most likely the fault starts and ends with the control box and isn't stemming from something else that caused it to go off first? Actually i've just tried it again hence editing my reply... something that struck me from earlier, i've turned off the demand for CH...
the burner lockout has tripped on my above boiler, and initially would reset and the system would run for a few minutes, giving me some central heating or some hot water, both seemed to work fine. Now it trips out after a few seconds and won't reset unless i switch the machine off for a short...