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Worcestershire ASHP

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Mars
 Mars
(@editor)
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2203 kWhs
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@julianc, very impressive numbers and your system is running very well. You must be pleased with that. It'll be interesting to see how it compares next winter versus weather compensation enabled. 

Caernarfon 18kW ASHP from Global Energy System – 6.16kW solar PV array
Follow our sustainability journey at My Home Farm
Our heat pump installation: https://youtu.be/c3V0k_GeFOo


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JulianC
(@julianc)
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Posts: 245
Topic starter  

@editor yes very pleased Mars. 
I wonder if we can get above SCOP of 4?  Maybe 4.5

We will see

Daikin Altherma 3H HT 18kW ASHP with Mixergy h/w cylinder; 4kW solar PV with Solic 200 electric diverter; Honda e and Hyundai Ioniq 5 P45 electric vehicles with Myenergi Zappi mk1 charger


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Adam C
(@adam-c)
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Joined: 1 year ago
Posts: 17
 

Hi Julian, 

I also installed a remote power meter so that's a great way to calculate SCOP, will reset mine at some point and then see what I get. But not being able to differentiate between the heating and the hot water is a real limitation. 

Be interested in what they do in the service. I read through the manual and on servicing it says very little but did what it says myself. Other than checking outdoor unit is clean and checking the filter on the indoor unit not much to do. Only maybe software update which I don't think I can do. 

Sadly can't make FCL this year but maybe you can do me and hopefully all Daikin users a favour!

Last time there was a Daikin stand with a gentleman who worked at Daikin UK, not just a installer. 

As a owner/user I am very disappointed at the limited information on performance that Daikin allow. All you get is the data on the small screen which does not even calculate COP for you! I bought and installed the WiFi unit so I can control it over WiFi and hoped for more in the App but no...

I personally would now not actually recommend Daikin as I think this is such a limitation. Mitsubishi give so much more with MELCloud I believe. 

If you could maybe pass this on and if possible can you get a email address for someone senior at Daikin and we could all email to complain? All the equipment is there for monitoring, all they need is a way to sensibly access it!

 Thanks.

Adam


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JulianC
(@julianc)
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Posts: 245
Topic starter  

@adam-c despite working in IT services, I think I get enough information from my Daikin. When purchasing, I decided not to add the Wi-Fi module (£150 option?). It’s a bit like my 10 year old solar PV system - used to Bluetooth laptop to the SMA inverter weekly to download and analyse performance. Got bored. 
So each to their own Alex, but it’s not a complaint I have with Daikin. I can see the use if remote problem diagnostics and fix were included - I will raise this. But for me ASHP reliability is more critical and responsive support from Daikin, should their be a problem. The 10 year warranty & fixed price was one of the reasons I picked Daikin over Mitsubishi Ecodan. 
Within the small screen on the Daikin and the energy consumption/produced information screen, it does split total from heating and hot water. So you could note down periodically.  You might also be able to build a logic app in IFTTT, with the right monitoring clamps, but for me it’s ok at the gross costs and SCOP levels. 
I do hope the Daikin engineer will assess the installation and make recommendations for any improvements in performance (other than wear an extra jumper). 

Daikin Altherma 3H HT 18kW ASHP with Mixergy h/w cylinder; 4kW solar PV with Solic 200 electric diverter; Honda e and Hyundai Ioniq 5 P45 electric vehicles with Myenergi Zappi mk1 charger


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Mars
 Mars
(@editor)
Member Admin
2203 kWhs
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Posts: 1133
 
Posted by: @adam-c

Be interested in what they do in the service. I read through the manual and on servicing it says very little but did what it says myself. Other than checking outdoor unit is clean and checking the filter on the indoor unit not much to do. Only maybe software update which I don't think I can do. 

The services are very unexciting. You can do almost all of it yourself and the only real value we saw was that they cleaned out the heat exchanger inside the ASHP unit, which in our case had accumulated some corrosive bits from our rads, which can lead to a loss in efficiency. Apart from that, we're obliged to pay for the services because failure to do so after three years (that's with our manufacture) it may void your warranty if anything goes wrong with the heat pump, so probably worth the expense given how expensive the units are. 

Caernarfon 18kW ASHP from Global Energy System – 6.16kW solar PV array
Follow our sustainability journey at My Home Farm
Our heat pump installation: https://youtu.be/c3V0k_GeFOo


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cathodeRay
(@cathoderay)
Active Member
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Joined: 3 months ago
Posts: 119
 

I struggle not to think of the servicing rituals as nothing more than money for old rope, a nice cash machine for installers. Making warranties conditional on regular servicing tie's our hands greatly: if we want a warranty, we have to go along with the ritual, whether it is justified or not. ASHPs are not like cars, which are designed to be regularly serviced (brake pads wear as part of their function, engine oil gets dirty and corrosive when it does its job etc). I would happily pay for servicing that did something I couldn't do (without getting some expensive kit) but to pay service hourly rates to clean away some leaves...  

Midea 14kW (for now...) ASHP heating both building and DHW


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JulianC
(@julianc)
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442 kWhs
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Posts: 245
Topic starter  

@cathoderay I hope the do a check on the installation. Check compressor pressure, R32 levels, running performance. I hope there is an extensive check list and it’s not just clearing out leaf waste. I will get the details on 5th May

Daikin Altherma 3H HT 18kW ASHP with Mixergy h/w cylinder; 4kW solar PV with Solic 200 electric diverter; Honda e and Hyundai Ioniq 5 P45 electric vehicles with Myenergi Zappi mk1 charger


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cathodeRay
(@cathoderay)
Active Member
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Joined: 3 months ago
Posts: 119
 

@julianc - it will be interesting to hear what they actually do. I think the only specialist thing done during routine Midea servicing is checking the pressure in the primary heat pump to house (in my case to the plate heat exchanger) circuit and re-pressurising if needed which needs special kit (and glycol/antifreeze). They also check various parameters, but these are not complicated to access, and any DIY competent home owner could do and interpret them.

Midea 14kW (for now...) ASHP heating both building and DHW


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HughF
(@hughf)
Beginner Member
184 kWhs
Joined: 3 weeks ago
Posts: 37
 

Ah, the old servicing to maintain warranty scam….

 

yeah, I wouldn’t bother. It’s not like a combustion appliance that might gas you to death. It’s a fridge, in your garden.


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mjr
 mjr
(@mjr)
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Posts: 68
 
Posted by: @hughf

It’s not like a combustion appliance that might gas you to death. It’s a fridge, in your garden.

But it is also a fairly expensive fridge sat in your garden and a relatively small extra expense (I've been quoted £80 for our ecodan) hopefully to keep it running sweetly for longer before you have to buy another one.


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Adam C
(@adam-c)
New Member
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Joined: 1 year ago
Posts: 17
 

Hi Julian,

How did the service go?

Interested to see a service check list if they had one. Thanks

Adam


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JulianC
(@julianc)
Active Member
442 kWhs
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Posts: 245
Topic starter  

@adam-c Afternoon. I was pleased with the service. Daikin chap was with us 1.5 hrs. I am waiting for the checklist report. 
He reviewed the installation and said it met Daikin standards. 
He did say I’d overpaid on the gold level contract as I have a 5 year parts and labour warranty. So I will step down at December to save a few quid for 4 years. 
He did switch on the legionella setting for the dhw, which now thinking about it, was unnecessary. With my diverter from solar PV, cylinder gets to v hot temps. Never had a legionella setting on the oil boiler. So I will switch off. 
I will report again when the checklist comes through 

Daikin Altherma 3H HT 18kW ASHP with Mixergy h/w cylinder; 4kW solar PV with Solic 200 electric diverter; Honda e and Hyundai Ioniq 5 P45 electric vehicles with Myenergi Zappi mk1 charger


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