I have asked a simple enough question, 'how to configure the system for weather compensation control'. Neither Shaun or yourself has provided an answer. There appears to be some form of mismatch between the hardware and the information in the manuals, which I find are poorly written when compared to those of other manufacturers.
On his visit a short while ago, Shaun informed the customer that the system could not be set for AI control, but failed to explain why, or what needed to be done to make it possible. I appreciate that many of the personnel working in the industry are poorly trained, and don't fully understand the equipment and systems upon which they work, and how to configure the systems for optimum performance. There is a simple statement that many should learn and follow, 'IF IN DOUBT, ASK'.
@derek-m You were sent a comprehensive set of manuals and included in that is the details for weather compensation.
Page 60 of the attached manual details it and options there of. the coverage starts from page 56.
Weather control option is a function of the mode control button but may be disabled as the client is using another themostat, as per the snapshot below (page 43 of the manual I sent you)!
Note: I will have to send it by email (done) as it seems that the data cannot be attached.
@derek-m You were sent a comprehensive set of manuals and included in that is the details for weather compensation.
Page 60 of the attached manual details it and options there of. the coverage starts from page 56.
Weather control option is a function of the mode control button but may be disabled as the client is using another themostat, as per the snapshot below (page 43 of the manual I sent you)!
Note: I will have to send it by email (done) as it seems that the data cannot be attached.
Hi Bob,
I'm afraid the manual that you have provided is for the wrong model of controller. On the controller that is actually installed it is not possible to access the setting parameters for the weather compensation, which is why I keep asking the question. I do believe the external thermostat is not actually connected to the LG controller, so in no way should it affect the operation of the weather compensation facility. The LG technician who visited recently basically left the system operating on a fixed water flow temperature of 50C, which is highly inefficient and costs a kings ransom to run. He failed to set weather compensation or set the system to operate in AI mode, just said it was not possible, but did not explain why or what could be done.
Your statement that the ASHP is working is indeed true, but I would question that it is working in an effective and efficient manner.
I would suggest that the poorly trained element should be tagged to the people who installed the system and did not give the support required.
As far as LG are concerned, the Therma V is working properly.
I sent you these manuals days ago.
Hope these answer your questions.
My comment was no dig.
Numerous owners of ASHP's, both from LG and other manufacturers are discovering, now that the heating season is upon us in earnest, that the installed equipment and systems have not been configured and commissioned correctly. Their systems are operating inefficiently and costing a small fortune to run.
If systems are not being correctly installed, configured and commissioned correctly, it is not the fault of the customers. For the industry to have any degree of credibility, the manufacturers should at least try to ensure that the personnel installing and commissioning their equipment are adequately trained to carry out such tasks.
We hear no mention of the company that supplied and installed the system and the company that took over the job.
I am only involved because of my experience as an LG supplier.
I have found a different manual on the remote but, in attempting to download, find the English versions are in Russian!
I have asked two people in LG UK to assist, one of whom is out until January.
Thank you for your efforts Bob, though it does make me wonder why the English version is in Russian. 🙄
I have read through all the manuals available, and the only conclusion that I can draw, in this particular situation, is that the DIP switches are incorrectly set and are not allowing access to the setting parameters for the weather compensation. This is far from clear from reading the manuals, and it is only my assumption, based on no other reasonable explanation. Why the LG controller does not allow access to the weather compensation parameters when in heating only mode, rather than both heating and cooling mode, is beyond understanding.
I suspect, though cannot easily confirm, that AI mode will not function correctly because the weather compensation parameters are not correctly adjusted, but again this my assumption since this is not clear even in the 261 page installation manual.
Perhaps someone in LG knows where DIP Switch 2-4 is located.
I would have expected that LG's Head Technician would have quickly spotted the incorrectly set DIP switch, should that be the case, and was quite surprised that he left the client with a system that was working both inefficiently and expensively.
The ASHP may have been working, but it was like having a four cylinder car engine running on three cylinders. It works, but not very well.
I can see that this thread is getting a bit spicy and I would like to initially highlight that @bobbt9866 does not work for LG and I asked him to take a look at the issues described in this topic because he is experienced with LG's products and he installs them.
I think the greater issue that exists is that the system has been poorly installed by another provider and Derek has tried to step in to try help Anna figure things out because LG have wiped their hands of this project (as they have before with other homeowners).
From what I've seen is that manufacturers (and not just LG) are not willing to step in and help homeowners to rectify these poorly installed systems that have been put in by approved installers who I would assume should have a working knowledge of the products they're installing. In addition to this, getting manuals and data is equally tricky (as highlighted above).
There are a lot of issues involved and homeowners are simply not getting the support from principles/manufacturers when things go wrong which does not instil a lot of consumer confidence.
Whilst the relevant manuals can be located and downloaded, I'm afraid that the ones for the LG equipment leave a lot to be desired. In my 50+ years career I have literally read through thousands of manufacturers documentation, so I feel I am in a much better position than most when it comes to locating and interpreting the relevant information.
In the particular case in question, whilst an LG technician inspected the system and pronounced the ASHP to be working correctly, he left it set on a fixed water flow temperature of 50C, which I think has now been established is not the most efficient way to operate an ASHP. He also stated that the controller could not be set in AI mode, but failed to explain why.
I have been trying to help the owner to get the system configured for maximum efficiency, but have found the instructions in the manuals detailing how to set the weather compensation mode, do not align with what is present within the menu structure of the controller. I have therefore been asking both Bob and the LG technician, to explain how to access and hence set up the weather compensation parameters. Bob was kind enough to reply, though I don't remember the LG technician doing so. Unfortunately the replies I received were basically 'look in the manual', although I repeatedly pointed out that what it states in the manual, does not appear to wish to happen in reality.
Whilst the owner and I, between the two of us, have managed to remove the freezing element from the title, and to some extent the expensive, we are still working to automate the process, hence the desire to set weather compensation. I have not been asking for any kind of special treatment, just someone to answer a fairly simple question. Since Bob and the LG technician either cannot, or do not, wish to help, I have sent a request to the LG help website, so maybe I will receive a reply some time in January.
@editor Lets clear that little thing up, regarding manufacturers.
They dont supply product direct to end users, they supply through distribution for them to sell on to installers who should be qualified to install. Of the three cases I have been invoved with, not of our supply, LG have visited site, on two occasions, at my insistance to help a end user out.
All three cases have been installed by unqualified and inexperienced heating engineers.
LG and distribition have a responsibility for the product and to ensure it is working correctly but not for the complete installation. The latter is down to the actual installer.
On this occasion LG attended site and established that the machine was working correctly and pointed out some errors in the installation. That was on the 8th December. Apart from Derek, it appears that no one else has attended to rectify the installation errors.
In a previous occasion the LG unit was undersized and, again, the installer/supplier did not respond to requests from the client to rectify.
@bobbt9866, I completely understand and respect the situation. It does, however, appear that the UK is spiralling down the poorly designed and installed heat pump rabbit hole. I have nothing against LG – I've always been a big fan of their products and I'm sure that their heat pumps are excellent, but it doesn't help when they're being installed by non-qualified, non-MCS accredited installers. There are many comments on these forums about Samsung, Daikin, Mitsubishi, etc. heat pumps that have also been incorrectly installed.
The time to get an ombudsman in place for renewable heating is well overdue because I fear that a significant chunk of the hundreds of thousands of heat pumps that will be installed in the years ahead will not be fit for purpose. That's hugely concerning, and even more so when people spend upwards of £10,000 for a heat pump installed by a non-MCS accredited installer and they have zero recourse when things go wrong.
