Daikin COP / energy used measurement from MMI
@crasher sorry, I missed your message.
I haven’t found a fix for this. I mentioned it to Octopus and a Daikin engineer when they visited and they were not very interested, stating that it was only approximate anyway.
So I setup ESPAltherma and have had it running for 3 months with Home Assistant:
https://raomin.github.io/ESPAltherma/
It is excellent and provides great insight into what your Daikin is doing.
@hcas I’ve got the Daikin integration for Home Assistant; it seems to show the same (bad) electricity data as the MMI 😔
@squarepeg77 Thanks for the reply. I never got an answer either but it just resolved itself, checked it a few days after posting here and all was good again I had readings back! I don't believe it to be 100% accurate but it gives a guide to how the unit performs. I've found the same with Daikin, they never seem overly interested in providing any help
@squarepeg77 Hi! Is it your ESPAltherma that is connected to Home Assistant? Or are you using the Onecta API for the Home Assistant?
And the ESPAltherma gives you the same wrong readings as the Onecta app and MMI?
Have you set up any home automation or smart steering of your heat pump?
Both ESPAltherma and Daikin integration connect to Home Assistant.
The Daikin integration exposes sensors that match the ONECTA app or MMI; so for me that means incorrect electricity consumption.
ESPaltherma is much lower level, but the electricity (voltage and current) sensors are considered inaccurate, so people seem to be using external monitoring. I’ve got a CT clamp around the heat pump feed that goes back to an Eddi, then I collect the data in HA.
If you want to get going with ESPAltherma, there’s an excellent guide here:
And yes, I am running a software thermostat in Home Assistant as the Madoka is too “quirky” for my liking.
-
Do I need a bigger volumizer: 8kW Daikin Altherma R32 LT split
2 months ago
-
Why does my second unit sometimes start up unexpectedly on a Daikin split system?
2 months ago
-
Daikin problem
3 months ago
-
HOT TIP - DHW Cylinder Thermostat
10 months ago
-
Dedicated heat meter and HP heat meter discrepency
1 year ago
- 24 Forums
- 1,422 Topics
- 29.9 K Posts
- 14 Online
- 1,206 Members
Join Us!
Latest Posts
-
RE: Issues with Vaillant connectivity via the MyCONNECT gateway
That’s awesome news, well done the hard work paid off. ...
By Drew Pa , 4 hours ago
-
RE: Are Solar Diverters Necessary for Homes with ASHPs and Solar PV?
@editor No, I made one 😀 Loft insulation all...
By Andris , 10 hours ago
-
RE: Observations on my Ecodan's estimates of energy consumed and delivered
@hestia I haven't touched this setting. As I can't dete...
By glpinxit , 10 hours ago
-
@hughf Thanks for that. Ah so they are talking about ...
By IRMartini , 13 hours ago
-
RE: Are Octopuses Slowing Consumer Adoption of Heat Pumps?
@editor We never received a quote; we had numerous emai...
By Toodles , 13 hours ago
-
RE: Ecodan software update. Real or scam?
@abernyte, hmm, must have been a major disruption if 40...
By Mars , 15 hours ago
-
RE: No-code, plug-and-play monitoring for your heat pump
For what it's worth, after my Mitsubishi Ecodan heat pu...
By scrchngwsl , 16 hours ago
-
RE: Installing your own ASHP - DIY
I’m in the DIY camp, completed the install last Septemb...
By HughF , 21 hours ago
-
Riello / Midea - modbus set flow temp
Hi, I’ve got a Riello NXHM 8kW HP with emonHP, all wo...
By stuartornum , 1 day ago
-
RE: Bivalent (or even trivalent!) system design options for a new GSHP installation
@transparent You are a bright spark aren’t you?!
By Toodles , 2 days ago
-
RE: Noise problems with newly installed Samsung 8kW ASHP
That could be the case, depending on where the triple r...
By AllyFish , 2 days ago
-
RE: Say hello and introduce yourself
@irmartini Oh! That’s a great shame.😳 Toodles.
By Toodles , 2 days ago
-
RE: Is this a bad installation and is there something wrong with my Samsung heat pump?
@david999 On the subject of isolation after the battery...
By HughF , 2 days ago
-
RE: New Fogstar 15.5kWh upright solution
@robl I've added the screens. Li-Bms screen is accur...
By GGW , 2 days ago
-
RE: SCOP and seasonal variations
I’ve had a long chat with Aaron from Homely Technical S...
By Toodles , 2 days ago
-
RE: Gas Combi to ASHP - Making sense of survey results and proposal.
Many thanks to everyone who has helped with advice and ...
By IRMartini , 3 days ago
-
RE: What is Wrong with our Heat Pump Installation?
With BESS the ASHP is best. Charge battery for free fro...
By AllyFish , 3 days ago
-
@hubb84 Try looking at powerflushassociation.com. They ...
By Toodles , 3 days ago
-
Central heating inhibitor with ASHPs
Have you seen the Heat Geek article and video?
By ChickenBig , 4 days ago
-
RE: Advice on potential HW Cylinder size
@jwilliams89 I would imagine that the MCS would insist ...
By bontwoody , 4 days ago
Latest Topics
-
By IRMartini 14 hours ago
-
Riello / Midea - modbus set flow temp
By stuartornum 1 day ago
-
Ecodan software update. Real or scam?
By Morgan 2 days ago
-
Noise problems with newly installed Samsung 8kW ASHP
By Lokisam 4 days ago
-
Central heating inhibitor with ASHPs
By IRMartini 4 days ago
-
Advice on potential HW Cylinder size
By JWilliams89 5 days ago
-
By Graeme 6 days ago