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Another update on my end - the hoses were replaced and the boiler and the system is working fine (for more than 24 hours now). I have a question though on the work carried out last Friday - when the engineer left on Friday afternoon, the boiler was left with the lid open - is this allowed? I...

The boiler is an old Baxi Solo model - there were 2 hoses (orange) that were changed - in fact the old hoses were pretty much falling apart.

Yeah, the initial "specialists" already have sent me the invoice and I need to get back to them - not sure I will be able to argue successfully about the unneeded work (I bet they will say their engineers considered these were the right things to do) but I will deff chase them for today's bill.

A major update from today - after considering the options and lack of proper tools/time and sufficient knowledge, I contacted another plumber to come and take a look at the system. He had a very good idea what happened after the first two bits that I mentioned - changing the central heating pump...

No strong magnet at hand, will try to get one tomorrow...

OK - my apologies, I have to admit I have made a mistake by providing a picture of the cold water cistern and not the F&E one. I am attaching an updated picutre where it seems things are far from ideal. Please correct me if I am wrong but this potentially means a blockage which can be cleared...

Following some further investigating I can see that the pipe with the red gate valve goes down from one of the tanks in the loft and goes in the tanks - from what I have seen on diagrams, it appears to be feeding the tank with cold water, which is to be warmed by the coil.

Do you mean radiator bleeding or should I be looking at another bleed valve/stopcock?

OK, I can see how this may cause issues, not sure if I will be able to check this though as I have limited tools and knowledge... also this is something that the second engineer worked on, which means it is covered by the guarantee the company provides. I will check if I can do this easily...

OK, you are right that I am not certain if the actual valve is moving properly (as per what the actuator shows). But please correct me if I am wrong here - when I looked at the diagrams and how the actuator and valve moves, it seems to me that it is not possible for the flow to be blocked. It...

Yep, the valve works fine now, capable to switch to all three positions.

From what I recall it was capable to move to heating and combined, but not to hot water only.

That was done without my knowledge and I only got to know this post replacement. The motorised valve issue I saw with my eyes, the valve was only able to go to 2 out of 3 positions irrespective of the call from the programmer. But it worked fine prior to installation of the pump so I am...

I was under the impression that the actuator was changed together with the valves. Upon closer inspection it looks like the valves are not new (they do look different/newer than the other piping so that may have confused me that these were changed). I am attaching 2 pics of the actuator and the...

I am attching 2 pics showing the pump when working. This is how it looks when running, irrespective of the heating setting. The pump setting is at constant curve 3 (factory setting and also recommended for venting the pump). Up until now I wasn't able to find a way to bleed the pump - as it is...

I will try to open the pump, I opened the old one, seemed straight forward but not sure with this one, I will check it out. We have not bled the pump out, but I was reassured that the installers did it (they bled the radiators too). As you can imagine I then bled them out several more times. In...

I am a bit unclear on the pump itself - trying to understand something (warning for a stupid question). Is there any circulation at all if the boiler is not working? I mean not the pump working, but water being circulated? The reason why I am asking this is - when I reset the boiler and fires...

So perhaps the pics I uploaded may have been a bit unclear. On pic 1 on my previous post there is no leak/dripping from the red valve or anywhere nearby. The only leak is on pic 2 from my previous post (i.e. the drain cock). I will upload several pics here to try to show the system/pipes. I am...

Thanks a lot for this - I did now have a much closer look how the system is designed to work. In any case, here are the updates: - checked the pump valves - open and as they should be; - the pump was installed correctly (in terms of direction of the water flow); - the motorised valve works fine...

I am attaching the pic of the boiler and (forgive my ignorance) have a couple of questions I am not clear about: - should both pipes above the boiler be hot? When the boiler starts, the left one is getting hot but I think the right one is just warm and not too hot. - should the central heating...