Daikin COP / energy used measurement from MMI
Hi,
I have a Daikin Altherma 9kW EDLA09DA3V3 with the "man machine interface" (MMI) running UI version 7.1.0.
The MMI can display electricity usage and heat produced, but I'm getting basically 0kWh for the electricity usage. Some days report 0kWh, others 1kWh, but never more than that. The head produced metric looks plausible. The ONECTA app shows the same, inaccurate, electricity usage.
I've raised this with Daikin and they suggested reseting the energy stats and powering the unit off for a while. I've done that, but there's been no discernible change in the measurements. I've also raised it with my installer (Octopus), but they've not made any suggestions yet.
Does anyone else have a similar system and do you get sensible stats for electricity used?
Thanks,
Jonathan
Hello again Squarepeg 77, yes, we have a Daikin EDLA08E2V3 (heating only, not DHW) and like you, have doubts about the accuracy of the consumption and heat output statistics displayed on the MMI. They seem very granular to me, I either see ‘1’ or ‘2’ kw/H shown against a given 2 hour period. I suspect that the metering of consumption is very basic and possibly a little too crude for any degree of accuracy. Mine at least does show believable consumption figures that appear the same on the Onecta app (who thinks of these names?!) I will attempt to attach a screenshot of today’s Onecta display topically. One thought though, there are settings for the metering device which I think is to allow for different meters and the number of pulses given per kW and perhaps this is not set cprrectly at the present. They may be found by going to the installer profile (5-6-7-8) and looking under energy I think.Regards, Toodles
Toodles, he heats his home with cold draughts and cooks his food with magnets.
I might add that we have had an Evergreen ‘Homely’ smart controller fitted 2 weeks ago and hope to report further on this soon; I am in contact with their rep who along with his technical team are currently monitoring my system remotely via the D-Comm and Hub. I suspect that the source of data for consumption will remain unchanged as I do not have any separate consumption metering for just the heat pump circuit. Regards, Toodles.
Toodles, he heats his home with cold draughts and cooks his food with magnets.
@toodles I’ve found the setting in the Installer menu and on my system “Electricity meter 1” is currently set to None. There are lots of options. Would you be able to tell me what yours is set to?
My reading of the help entry is that I should be set to None, but maybe Daikin consider the MMI as an “external meter”.
@squarepeg77 I think mine is set to the first (lowest) option in the list. Regards, Toodles.
Toodles, he heats his home with cold draughts and cooks his food with magnets.
@toodles I changed mine to “1/10kWh” yesterday, but I’m not seeing any change to the energy usage reported by the MMI or ONECTA.
@squarepeg77 Sorry, I’ll check mine later and write again. Regards, Toodles.
Toodles, he heats his home with cold draughts and cooks his food with magnets.
Have now checked, mine is set on ‘None’ - so that gets you precisely… nowhere I think! Sorry! Regards, Toodles.
Toodles, he heats his home with cold draughts and cooks his food with magnets.
I have altherma 3 h ht 16 kw and the same problem. Problem started last year. Until last year (2 years) was consumption of energy working just fine and worked well. Until last year is every day 0 kw. I need that information, but nobody od Daikin can not help me. What to do ?
I have a similar Daikin system and although it seems to accurately show the electricity used, I have my doubts over the accuracy of the heat produced.
According to the system it only produced 10,000 kWh of heat in a year, at a COP of 2.6. My heat loss calculations suggest it should be more like 14,000 kWh which would make the COP more like 3.6.
As for the "electricity in", my installer fitted a separate meter on the incoming supply, and it agrees pretty closely with what the unit thinks it has used (4425 kWh since installation on the external meter, versus 4441 kWh on the unit display).
@squarepeg77 did you ever get anywhere with finding a solution to the problem with electricity usage reading 0kWh?
My unit has started doing the very same thing since last week. I can't seem to be able to get any answers on how to resolve it.
Thanks.
Were you able to solve the lack of electricity usage data?
Did anyone try to access the Onecta API directly? So not through the app or via the MMI, but directly in the API.
CEO and co-founder at HavenWise
-
Warm weather and heat pumps.
1 month ago
-
Oversized Daikin 9kw
2 months ago
-
Daikin Octopus installation update - I saw my first defrost. 😍😂
4 months ago
-
Daikin Error Code 7H05
6 months ago
-
British Gas versus Octopus: Two possible heat pump routes - how to evaluate them?
8 months ago
- 22 Forums
- 2,078 Topics
- 45.6 K Posts
- 122 Online
- 3,356 Members
Join Us!
Trusted Installers
Struggling to find a reliable heat pump installer? A poor installation can lead to inefficiencies and high running costs. We now connect homeowners with top-rated installers who deliver quality work and excellent service.
✅ Verified, trusted & experienced installers
✅ Nationwide coverage expanding
✅ Special offers available
Latest Posts
-
RE: Say hello and introduce yourself
Firstly I agree with what others above have said. I a...
By JamesPa , 1 hour ago
-
RE: Renewable Heating Hub Homeowners' Q&A Podcast
In our latest episode, we hand the mic to four homeowne...
By Mars , 17 hours ago
-
RE: Forum updates, announcements & issues
@andrewj I’m currently away and only back this weekend....
By Mars , 17 hours ago
-
This is very interesting - I have just had my ASHP spli...
By heat-pump-newbie , 20 hours ago
-
RE: Help Stop the MCS Heat Pump Monopoly
Response sent. Thank you for highlighting the document...
By Sheriff Fatman , 1 day ago
-
RE: I worry I've messed my Samsung settings up somehow
Yes , this time of year . Unfortuneately I dont have ...
By Alfapat , 1 day ago
-
RE: Feasible solutions to expand existing Sunsynk battery capacity
Ours is a loft installation, which is where both invert...
By Sheriff Fatman , 1 day ago
-
All your heat pump problems solved by -- a plate heat exchanger in a plinth!
The cut away appears to shows that its a plate heat exc...
By JamesPa , 1 day ago
-
RE: 5 Star Service from Havenwise
@sheriff-fatman Exactly this is why a lot of our users ...
By HCas , 2 days ago
-
RE: Solar Thermal DHW and ASHP
I'm beginning to think solar thermal is something that ...
By Alex_N , 2 days ago
-
RE: Commencing on an ASHP Installation Process
I received the BUS Grant permission email yesterday eve...
By Sheriff Fatman , 2 days ago
-
RE: Solar Power Output – Let’s Compare Generation Figures
510kWh of solar PV from my 4kW Hyundai panels and SMA S...
By JulianC , 4 days ago
-
RE: Is my Samsung heat pump working too well?
Thats in itself is interesting. I have a Vaillant heat...
By JamesPa , 4 days ago
-
RE: Jokes and fun posts about heat pumps and renewables
@transparent Not a swell season then ☹️
By Toodles , 4 days ago
-
RE: Air Changes per Hour - ACH and the MCS requirement
update - my old installer insisted on a heat loss of 11...
By MatWin , 5 days ago
-
I agree it's not very helpful. Generally, the max heat ...
By Old_Scientist , 5 days ago
-
RE: Why Your MCS-Certified Installer Might Not Be As Competent As You Think
Hive and most other smart thermostats don't play well w...
By JamesPa , 6 days ago
-
RE: Enabling WiFi: Samsung ASHP on Smart Things App
Thanks for the input. I've been running various experim...
By Grahamh-uk , 6 days ago
-
RE: Radiators downstairs are cooler at the bottom after ASHP install
@melonbuffet Hi, this sounds great is you are getting 5...
By ASHP-BOBBA , 6 days ago
-
RE: Ripped Off: How UK Homeowners Are Paying Gas Prices for Wind Energy
I believe there's another reason that network upgrades ...
By Transparent , 7 days ago