Ecodan - rubbish data
Hi,
I have an Ecodan 8.5kW ASHP - I have been logging data from the FT6 display (I don't have Melcloud) manually and keeping track of daily household energy use, and the information just doesn't seem to tally. I suppose I shouldn't mind so much, but I would like to understand more accurately how much electricity the unit is using.
An example of the sort of data that is being generated - for January the FT6 is saying that the heatpump consumed 402kWh of electricity for both DHW and heating. The delivered energy was 902 giving a COP of 2.24. My total household energy use was 488kWh for January. Therefore if I take the consumption data that means that on average the heatpump was using 13kWh a day (not unreasonable) and the rest of the house was using 2.8kWh a day (4 bed house with 2 adults working from home and 2 teenagers). The total household energy use is correct - that is what I am billed! Pre-heatpump my average household energy use across the whole year was 5.6kWh a day. Is there anything I can do with my existing setup to improve the accuracy of reporting, or do I need to look at a 3rd party system to record actual use? Any pointers would be helpful.
Cheers
Gavin
Yep, the self-measurement of the Ecodans is highly inaccurate. For January mine gives me a consumed estimate of 687kWh against a metered value 631kWh.
If you want an accurate value you'll need a meter on the supply circuit. It will depend how much you are happy to intervene in the the wiring arrangements. A straight forward meter inserted into the supply circuit ( https://metersuk.co.uk/products/single-phase-electric-the-tiny/) will give you an accurate record but one that you will have to read yourself as and when. I have my circuit wired through an Eastron SDM120 meter mounted next to the consumer unit which then feeds a value into an OpenEnergyMonitor setup which records and displays the energy consumed via computer/phone. If you don't want to rewire the mains at all you could go with a CT clamp-based arrangement where a circular magnet is clamped around the live wire inside the consumer unit (eg https://metersuk.co.uk/products/single-phase-electric-meter/).
Mitsubishi EcoDan 8.5 kW ASHP - radiators on a single loop
210l Mitsubishi solar tank
Solar thermal
3.94kW of PV
- 26 Forums
- 2,233 Topics
- 49.7 K Posts
- 144 Online
- 5,898 Members
Join Us!
Podcast Picks
Latest Posts
-
As mentioned in other forums when 2 x 10kw grant aerona...
By bretix , 3 hours ago
-
RE: Effect of Mitsu PAR WT60 Wireless Controller
Hi David, If your Mitsi is still on weather compensa...
By RobS , 4 hours ago
-
In most cases I'd expect such liability would be tested...
By Transparent , 6 hours ago
-
RE: Say hello and introduce yourself
This discussion has gone quite deep for our Hello &...
By Transparent , 6 hours ago
-
RE: Midea ASHP – how to set weather compensation
@pash44pump - it sounds as though you are close to havi...
By cathodeRay , 7 hours ago
-
Let's see if we can tempt @glyn-h to give his insights....
By Mars , 9 hours ago
-
RE: New Fogstar 15.5kWh upright solution
I should've read further before posting the above. ...
By Transparent , 9 hours ago
-
RE: Question about Heating Pump Operation mode – Ecodan FTC6 v20.06
This isn't an exact reply to your question, as I don't ...
By rhh2348 , 9 hours ago
-
RE: Daikin Octopus installation update - I saw my first defrost. 😍😂
@radwhisperer It does seem to occur most loudly the mor...
By Jancold , 10 hours ago
-
RE: What crazy nonsense are inverter limits and why are they imposed?
Let's first note what those parameters are. They are ...
By Transparent , 11 hours ago
-
I’ve met the Flexi-Orb team, and they come across as ge...
By Mars , 11 hours ago
-
Webinar on "Heat Pumps for Home Owners" Thursday 20...
By Mars , 14 hours ago
-
RE: Help me keep the faith with my air source heat pump installation
@grantmethestrength also i need to check the other stra...
By AdamK , 14 hours ago
-
@jamespa @old_scientist @iaack Hi, thanks for the inp...
By bontwoody , 14 hours ago
-
RE: Should Our Water Circulation Pump Be Configured to Run All The Time?
This is how Daikin run their heat pumps. Weather Comp...
By RadWhisperer , 17 hours ago
-
Solis S6-EH1P8K-L-PLUS – Why I Chose It and What I’ve Learned So Far
I ended up with a Solis S6-EH1P8K-L-PLUS (8 kW) hybrid ...
By Batpred , 1 day ago
-
RE: Options on flushing my system
@grantmethestrength with your pragmatic approach and &#...
By SUNandAIR , 1 day ago
-
RE: Samsung Heat Pump – Can't Activate TW2 Pipe Sensor (for Delta T Control)
@batpred For the moment I'm sticking with what I have, ...
By bubuontheweb , 1 day ago
-
RE: Electricity price predictions
Nice to be back on track! If we all had the interest, s...
By Batpred , 1 day ago



