Recent content by nyamago

I reached the full turning capacity of the valve, it really isn'tmuch - definitely less than 1/8 turn (45 degrees) - more like 20-30 degrees, then you feel a resistence like 'metal knocking on metal' and you know it won't go further. In the end I didn't need pliers and could turn it all the...

Thanks for this advice, valuable as usual. I am trying to do this, but... The genius, who built our system has mounted the valve vertically, with its top facing a nearby wall (just an inch from it), and 2 pipes also very near - mission impossible to dismantle powerhead to gain access to the...

The lever always stays where I leave it :( There is always some resistance, but doesn't seem 'the right' resistance - i don't feel as if there is a mechanical transmission or a spring against my push. Just some friction, as if the lever is pressed towards the sides of the slot - just...

I think I am narrowing all suspicions to the motorised 3-point valve. At least by the 'walking' method, suggested by matt1e: When running only HW (CH off at programmer and room stat) the cylinder stat does trigger boiler and pump. However, I didn't notice any movement of the little lever on...

Remember that the current problem didn't exist: when we bought the house, that same system allowed independent start/stop of HW and CH. After the re-piping, I had to do the (a) or (b) described, i.e. cheat the valve to feed radiators by manipulating the cylinder stat. That's because the...

@Newgas: Sorry if I sounded somewhat sarcastic :roll: (I was - for which I apologise. When you're pulling your hair out facing a porblem, even best-intended jokes can be misinterpreted and are generally..not helpful). What was 'clear' to him was clear to me, too - the valve wires have unique...

@matt1e: Thanks, this brings me closer to the tests. I could take another photo with the blocks better visible from above, but I think with the suggestions you already made, the wiring diagram in hand, and tracing at least the visible cables to devices (plus some logic :)) I should be able...

@D_Hailsham: Thanks again - This makes sense, although it's a definite weekend job - requires at least one 'helper' from the household (a) to keep checking if boiler is running and shout from garage (oh, we forget mobile phones can be used for that :) ), and (b) to keep shutting the entire...

Many thanks! I was already figuring out from the diagrams what connects to what (although reluctant to trace it in the spaghetti) - but your clear step-by-step explanation made it a lot easier, and I even don't find it that scary any more :) I will probably consider re-installing with a...

This was deeply informative and very helpful - thanks!

Yes, even I could figure that, having the benefit of seeing beyond this photo - that the cable coming out of the valve is black (and there's only one black cable in the box. Eureka!) It's also the only one that has a grey and orange wire - I had already come across these colours while reading...

Labeled cables? :shock: This box is mounted on the airing cupboard floor. Under the boards is a spaghetti mess of identical, unmarked, flat white cables going further through the floor and walls - and no way to tell which one comes from where. Unless a thorough testing is performed around...