canalsiderenovation

Yes I suspect so. Strangely we have had no issues with the filter up until now and now I know what to do I feel confident regularly checking it. Kind of a bit like the mesh thing on our kitchen Quooker tap. I will definitely look into this though and getting one of those clear tundish things too which the engineer suggested. I probably won't use this same company again though so will need to find another company/competent person... and that is a struggle!

I haven't had the bill yet. I am annoyed they had to come out again. I think really he should have stayed long enough to see the filter was not blocked. He said he did check and left the heating and hot water on when he left but it was clear from the water temp and cold house that the error code must have appeared pretty much right after he left, preventing the heating and hot water coming on. Yes the engineer mentioned he has seen this on Telford cylinders before but less so on Gledhill.

The same guy from yesterday came out. The filter was blocked (this bit). He said he did test it before leaving but obviously more crap got in it. He has shown me exactly what to do to check the filter now for future. The rattling sound is actually the coil at the bottom of the Gledhill tank. He has adjusted the flow etc and its 18.2lpm. There is a little rattle and he showed me if you apply a bit of pressure to the top and bottom pipes it stops. I'm still not sure why we have this now and didnt before. He has used zip ties to apply this pressure. Not ideal but for now we have heating and hot water. I think perhaps in the long term we need to get someone else out as I don't know why we have had no rattle for years and now do. He did say you can fit a valve/additional pipework. 20260117_104834.mp4 Going back to yesterday. The issue with the tundish was all to do with the pressure issues and there was quite a leak from here which needed tightening. He said that was likely the cause of the pressure drop and subsequent issues. The expansion tanks did not need replacing, just pumping back up.

No, not mean at all because I have no idea what I am looking at and better leave it to the 'experts' although at this point I'm questioning if the 'experts' actually know anything....

What would this look like?

Neither heating or DHW is working. I will be on the phone at 9am to the company asking that they either sort it or put everything back to it was when it was working 12 hours ago. When I attempt to turn either on there is a noise. I am not sure if it is coming from this or the tanks but this was not happening 12 hours ago. 20260116_194843.mp4

Fine. When I go to turn on the heating or hot water there is what sounds like a grind noise coming from below (I think the pump thing). I have sent a scathing email to the company. We are in an even worse position than 24 hours ago. How they have managed to cause more problems I have no idea. We had heating 24 hours ago and even hot water albeit with a leaking tundish.

Flow sensor is zero so that is the problem but I can't test any further. Within a few seconds of turning the heating on the error code comes up.

I spoke to soon. Now we have no heating or hot water and an error code. We had to leave the minute the engineer left as they were 2 hours late. He left the heating and hot water on. Clearly the error code came right after he left as our hot water is 18 degrees and the house is cold. I am absolutely fuming. We are in an even worse position than before. I will be on the phone to them at 9am in the morning!

Will fully update later but have a guy here now from same company whose first question was "who did the service?" Embarassing when I said same company you work for but different guy! This guy seems to know what he is doing been doing it 27 years. Expansion tanks just needed pumping up which he has done and DO NOT need replacing.... paid 50% deposit on the basis they said they needed replacing and guy is going to sort with office. Is sorting that leak (pic I uploaded with the leak from the bottom of Gledhill tank) which he noticed right away. Will explain other stuff later on....

I don't think they topped up the glycol, this is on their quote to do with the expansion tanks. They noted the glycol was low.... they are doing it on Friday. The system will be cold (we have not turned the ASHP hot water on since yesterday and won't be turning it on before they come Friday AM. The heating will be off at that time too.

I have rung the company today and explained that I know they are coming out on Friday to replace the expansion tanks we were told needed to be replaced but that the tundish is leaking cold water and that I don't know if this is or is not linked to the expansion tanks we were told needed to be replaced and the leak the engineer found in the service and repaired (I have no idea what the leak was noted on the service record). They said they made some notes and will pass on to the engineer. I have written down everything from the pressure dropping, wanting to know exactly how they have determined the expansion tanks need replacing, what the issue is with them, the leaking tundish and cause and also asking if they can fit the things recommended on the expansion tanks which I now have from Screwfix. I will go through everything and be really clear. I am wondering if the note of the tanks needing to be replaced (if indeed they do) is something completely seperate to the problems we had with the pressure drop and leaking tundish since (just coincidental timing that it happened so close to the service). We had not noticed any issue with pressure dropping or leaking tundish til after then so maybe, just maybe there were no issues with it when they did the service. Hopefully will have a clearer picture at the end of the week.

Thanks @Nickfromwales Also I did some more troubleshooting. I just turned on the ASHP for hot water. The tundish only leaks when I turn the hot water off. So it heats up fine but then when I turn it off (turned it off at 45 degrees), the tundish starts leaking. It is definately cold water.

Got it. Is it just one I need? And where do these need fitting?

Yes hot water was being heated at the time. And no, I am not sure it was cold at all. Can you send me the link of what is needed and I will order now and ask the guy to fit them. He may not given that they haven't quoted but if it is something he can do at the same time then hopefully it won't be a problem. What do I ask the guy to do, just so I am using the right language when I ask him to do it. Annoyingly I paid the deposit so those tanks have been ordered already. Is that the temp on the hot water tank? Like the bottom under that white cap, if so we adjusted that a few years ago. Our hot water temp never goes over about 55 degrees. It comes in at the utility and all the tank and ASHP stuff is in there so presume so. The Airbnb is a seperate but attached ensuite room to our house so any issues impacts us and them.