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Back again - the time gap was unavoidable unfortunately. Right where were we... Tony, hot water makes the green lights flash alternately side to side, heating makes both of the green lights flash together. Just an impression - when the burner comes on for heating there seems to be a good...

:) And I'm easily confused let me tell you. I'll check again later but as I recall whether you draw hot water or the CH is on the two outermost green lights just flash steadily alternately.

Hi Tony, have got a Robin meter so if that will do it, just need to know how. I see in the Service Manual that the actuator needs to be fitted to get CH as the spindle has to be pushing downwards to work the DV. I'm not optimistic at this stage as there seem to be so many things that it...

Tony, I couldn't do exactly what you asked but this is what I did find. Actuator unclipped CH programmed to off Temp gauge about 33ish (when I looked after running HW for a little while but forgot to see what the initial reading was, sorry) Start to run DWH Burner lights Green lights...

I think Dave's probably hit it. CH off on clock. Temp gauge 31 Run HW, burner lights and green lights flash alternately But.. feel CH flow and I'm pretty certain it's getting warm. I left it to cool and was just going to try again when the heating came back on again on the clock ...

Thanks Dave (and Tony). Difficult to tell as the heating's running and CH F and R are both hot anyway. I'll wait until the system shuts down and cools later and give it a try. I've replaced the black object on the top of the valve for now. Seems to me as though it's not responding to a demand...

I think there's either a fault or this is just a naff model. I switched over to no CH and HW only. The burner and pump activated for a few seconds. Then tried to run a sink of hot water. Same as before. Half a sink and then tepid. You could never fill a bath with it. Can't be right can it...

Ooer - I hope I've done the right thing. The only clip I could find secures what I guess is the valve actuating motor to the top of the valve. I yanked it forward out of its slots and the motor popped off the valve. Now I assume if I've done it correctly, because I've done it while the CH...

Blimey you lads are good :shock: I've found the valve in the diagram - got to take the ruddy dog out first before it starts raining again and then I'll check what you suggest. Is it easy to find this clip? I'll let you know how I get on - be nice to be able to tell my son what to do with...

My Biasi Garda HE doesn't give hot water when the clock has programmed CH off. CH is off for much of the day - so no hot water if it's needed. I thought the clock was only supposed to control the CH and that HW was supposed to be available at all times? Also when CH is on and HW run, it...