@netdonkey Sorry, one more thing, I note you say the system was installed in June 2024? if so, you are still well within your warranty and under HIES all installation companies cannot wash their hands of it for the 2 years you will be under warranty.
Did you do this with the BUS Grant? if so I think HIES would back you up, they will need to attend and fix what ever is causing the low flow. Low flow is not an ASHP issue or maintenance within 6 months.
AAC Group Ltd covering the Kent Area for design, supply and installation of ASHP systems, service and maintenance, diagnostics and repairs.
Professional installer. Book a one-to-one consultation for pre- and post-installation advice, troubleshooting and system optimisation.
Posted by: @transparentPosted by: @netdonkeyBled it and there was a fair bit of air in there before water started to come out but still hasnt made a difference.
Then there's likely to be more air in the pipes somewhere.
The amount of air which came out from that bleed position was "a fair bit", but it's limited by just how much air can be trapped at that location.
Bleed it again 20mins later and you might get more air out.
Equally, you have other air-release valves which are worthwhile looking at.
Even the ones which are meant to be "automatic", can sometimes be less optimal at the job.
Unscrew the plastic cap on the top and press down the brass plunger.
You may get a mixture of air and water before you see just water trickling out.
Ive done it 5-6 times and do get a couple of seconds worth of air out. I did find this on the screwfix forum https://community.screwfix.com/threads/samsung-heat-pump-e911-code-reoccurring.268672/ they mention a pressure relief valve near the ASHP. Any ideas what that may look like? Would I even have one?
Nick
@netdonkey yes you would have one in the condenser but its inside the cover and it would look something like that attached link.
In your picture where I draw the arrows pink and blue for the main ASHP flow and return, do these pipes go across the top and raise up or go straight through the wall behind? I am just wondering if they took the pipework through the loft there may be some bleed valves at the highest point of the circuit.
AAC Group Ltd covering the Kent Area for design, supply and installation of ASHP systems, service and maintenance, diagnostics and repairs.
Professional installer. Book a one-to-one consultation for pre- and post-installation advice, troubleshooting and system optimisation.
@ashp-bobba That's what I have hit them with and spent the last hour messaging back and forth. There are 2 pressure relief valves in the loft. Opened the one on the return and air came out for about 5-10 seconds. The valve on the flow released air for about 5 seconds.
After doing that, this one was staring me in the face just above the braided cable to fill the system back up. Opened this up and air came out for about 20 seconds!! Now the flow is about 9.1lpm which is an improvement and enough to get the radiators going.
@netdonkey excellent, I am glad I was thinking down the right track from the beginning, well done, the system really needs more flow than that, I would suspect there is more air, keep bleding it over the next few days and keep topping the pressure back up to 1.5 bar. form what you described thats a fair bit of air. allowing the system to run for a bit will help collect more air that is traveling around the system to that high point and then you can bleed the rest out.
Please let me know in a few days how you got on.
AAC Group Ltd covering the Kent Area for design, supply and installation of ASHP systems, service and maintenance, diagnostics and repairs.
Professional installer. Book a one-to-one consultation for pre- and post-installation advice, troubleshooting and system optimisation.
Quick update.
Being going intot he loft and turning the pressure releif valves and do get air coming out which is a good sign. Can't get it over 9lpm which makes me wonder if the Evosta3 is undersized.
I've asked the installer for the design doc but not sure if they will be forthcoming with it.
Posted by: @netdonkeyI've asked the installer for the design doc but not sure if they will be forthcoming with it.
We had to fight for ours too, and it's usually a sign that there wasn't one to begin with.
Get a copy of The Ultimate Guide to Heat Pumps
Subscribe and follow our Homeowners’ Q&A heat pump podcast
We also ought to consider if the flow is being reduced by sharp elbow joints in the pipework.
There is a considerable loss of pressure if standard elbows are used. The best installations will have changes of direction achieved by the installer making shallow bends with a pipe-bending tool.
If the radius of bend needs to be smaller than can be done by that method, then swept-bends should be used rather than 90-deg elbow joints.
Save energy... recycle electrons!
Have a closer look and see whether these are tight elbows or swept bends.
You might also want to view the comparison between smooth bends and pipe elbows which is well demonstrated in this YouTube video
Save energy... recycle electrons!
@netdonkey Hey Net, keep bleeding the air, there can be no air, not even a smidge, any air will reduce the circuit performance, Samsung are sensitive to air locks and flow rates. I still think ask the installers to fix the flow rate and watch how they did it, if they can prove to you it can run between 15-23l/pm then you know the system can be optimal regardless of bends and pipe size, if they cant get the flow then they should review their design.
As you said it used to work fine we need to assume it can run at the req flow rate, then its likely air or something else as the elbow would not have changed.
AAC Group Ltd covering the Kent Area for design, supply and installation of ASHP systems, service and maintenance, diagnostics and repairs.
Professional installer. Book a one-to-one consultation for pre- and post-installation advice, troubleshooting and system optimisation.
-
How can I programme a setback for my Samsung Gen6 8kW heat pump?
1 week ago
-
Samsung problems
1 month ago
-
Sudden drop in COP
2 months ago
-
Samsung's Cold Shoulder: Should Heat Pump Manufacturers Be More Accountable?
2 years ago
-
Any installer recommendations for Samsung ASHP?
2 years ago
Currently viewing this topic 1 guest.
- 26 Forums
- 2,208 Topics
- 48.7 K Posts
- 375 Online
- 5,868 Members
Join Us!
Podcast Picks
Latest Posts
-
RE: Heat loss calculations and how they work in conjunction with heat pump sizing
Thanks and apologies if I was a bit lazy...I have not p...
By Batpred , 8 hours ago
-
RE: Havenwise App Help & Forum Support – Get the Most from Your Heat Pump
@plasfron Hi there! Yes your Mitsubishi heat pump needs...
By HCas , 10 hours ago
-
RE: Aira Heat Pump: Stylish Scandinavian Heating
The recent ZeroDisrupt discussions reminded me to take ...
By Mars , 10 hours ago
-
RE: What is the Heat Geek Guarantee?
@colinc, that’s a very fair and well-balanced comment, ...
By Mars , 10 hours ago
-
@toodles Thanks. I will assume they have made som...
By Papahuhu , 11 hours ago
-
RE: Are We Sleepwalking Into Another Race to the Bottom?
Oh come on, that's a ridiculous argument by an installe...
By JamesPa , 11 hours ago
-
RE: Say hello and introduce yourself
I've seen photos of other people placing the tank in a ...
By Transparent , 12 hours ago
-
RE: PV Panels on roof in Conservation Area
@colinc Do your own due diligence re reviews etc but...
By Morgan , 13 hours ago
-
RE: Heat Pump Installers: Competence, Illusion and the Hard Truth Homeowners Must Face
So true, possibly with the exception of people you woul...
By JamesPa , 13 hours ago
-
RE: Isolating the system for a planned power cut
I hadn't realised your reason for a 100mA trip was due ...
By Transparent , 14 hours ago
-
RE: Midea ASHP – how to set weather compensation
Some things worth mentioning: (1) the Headroom Heat P...
By cathodeRay , 14 hours ago
-
RE: Heating Turned Off but Radiators Still Warm
@9jwr9 I didn't get an answer at the time and there has...
By Pipcart , 15 hours ago
-
RE: Battery storage to run Heat Pump.
@majordennisbloodnok I’m not sure you will be able to r...
By Toodles , 15 hours ago
-
RE: Renewables & Heat Pumps in the News
You've completely missed the point. Old, unpatched so...
By Majordennisbloodnok , 15 hours ago
-
RE: Ecodan Energy Monitoring Pack
@batpred that’s an idea yes. Will look into it
By Carpenterstation , 16 hours ago
-
-
PUHZ SW120Y & EHSC-VM2D - Buffer tank to Volumiser
Eventually I was able to find someone here in the Algar...
By DavidAlgarve , 16 hours ago
-
RE: Anyone still weathering it out with Agile?
We are still on agile and it works ok'ish to charge the...
By Batpred , 16 hours ago
-
RE: New Fogstar 15.5kWh upright solution
Ah... now I can see a photo,and that changes the advice...
By Transparent , 19 hours ago