canalsiderenovation

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.

We can't leave the ASHP on for our hot water. I wouldn't feel confortable to be honest. Water was literally pi$$ing out of the tundish. Someone asked if it was hot or cold but I can't remember. I think cold.. Yes and no. They did but in the hoo haa of the wrong email/billing issue it went to the wrong email address. I was then able to ask and get this resent which I posted on here. Leaking tundish is on our Gledhill water tank. The only pressure gauge I can see is the one on earlier photos and pictures. I spoke to the company today and have booked them in, hopefully Wednesday. I know @Nickfromwales you will be cursing me but frankly we are stuck. We have visitors later this week and an Airbnb booking so it is a case of sucking it up because the timing could not be worse. We used the gym showers tonight but we dare not turn on the hot water ASHP and have a lot of water coming out. So this is what I am going to ask: 1. We want to keep those expansion tanks. Told they need replacing but saw no evidence of this. We want to check them/see this (if they remove them is there a way of checking they have failed if they remove them)? The service form says they need replacing so this indicates they have failed. Do companies routinely replace them or pump them back up?? 2. We will explain what happened with the pressure dropping to 0, how I topped it up and the leaking tundish. Ask them to check valves are not faulty.

I will ask to keep the old ones. I am going to ask lots of questions when the company comes round and ask them to show me the burst bladder. I will also raise the other points on here people mention to be sure what they doing will fix the issue. The quote says 50% deposit before they come so I will have sort that. We are kind of stuck really with no hot water..

I think we will just get them sorted for now. We haven't paid for services for a few years so I guess this is payback. I am going to be here and will ask him to show me them and explain everything too. Would we have caused this by using the solar to heat our how water and not having the ASHP heat our hot water/turning it off for a large amount of time?

Thank god we have no sun forecast! The Solic diverts any excess but we likely are not getting any excess but were yesterday as that is what gave us majority of hot water then 🙄

I think we may be wise then getting the company back who serviced it/quoted on the basis we could really do with hot water this week! I only just managed to heat the water to 42 degrees when I noticed the leak so until it is resolved we are kind of stuck and solar isn't doing much! Gym it is this week to use their shower...

Tundish is definately leaking, a lot! Are we ok to have our ASHP heating on still and just avoid using the ASHP for heating out hot water?

I take it it is likely those two white cylinders do need replacing then?

Spoke to soon! Definately leaking. Turned water off on ASHP.. presume we shoulsld try and avoid using the ASHP to heat our hot water and probably try and get this sorted asap. Maybe I was too quick to doubt the first company then. 20260111_143031.mp4

Turned water on. Watched it for 10 mins with torch looking for any signs of a drip and nothing so far. Let some tissue in and will monitor over next day or so and see if there is any sign of any water.

Hot water had not been on since yesterday as I turned it off on the ASHP as I wanted to manually switch it on today and watch to see if there were any leaks from that tundish. Haven't turned it on yet and just noticed the black pressure needle has dropped - photo taken 1.10pm(ASHP heating came on at 1pm). Is this normal? Edit to say, it creeped back up again (photo taken below 35 mins later at 1.45 so maybe just dropped as heating came on/is on now..)

I don't think he did, that was one of the things the quote included... service did not include topping up glycol.

Thank you I will turn it on later and watch it for a bit. I will then the tissue method too.... will update soon.

20260110_172447.mp4

Is it this that is coming from the Gledhill tank? It feels dry at the moment. I can test it later and turn the water on after I have had a bath. Cant see anything else like that.

It was our first time using this company (unfortunately there are only about 3 companies localish who service/install heat pumps) and we are definately going to ditch these... Any of your 'normal' plumbers this end don't seem to know ASHPs (our experience of plumbers is they don't know plumbing either)! So the main players are renewables companies that 'specialise' in renewables like heat pumpd, solar etc.

So, checked this morning and everything all fine since I added pressure back. Heating and hot water working, not noticed any dips in the black/red bar thibgys when the heating or hot water is on or off. Since I added the pressure back I have made a few checks throughout the day today and yesterday when heating is on and off and hot water is on and off. No change. One thing I did notice when having a good nosy around is on the bottom of the Gledhill tank. It is not dripping or but there was a copper wet mark on the floor and when I touched the pipe I got a rusty damp finger. The ASHP only does the hot water for a few months of the year as the rest of the time the Solic 2000 diverts for our hot water and for around 8 months a year the hot water programme on the ASHP is turned off completely. At the moment we just have the hot water ASHP timed to come on for an hour during Cosy tarrif late afternoon but on days like today when it has been sunny all day our water is pretty much at temperature so the ASHP likely wont need to heat it much if at all....

It is on during Octopus Cosy times so I will check around 11am tomorrow (it would have gone off at 7am so will have cooled off).