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Data Accuracy Problem: Daikin 8kW Heat Pump's Onecta App vs MMI Power Consumption

 
Air Source Heat Pumps (ASHPs)
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 Nursethescreens
(@nursethescreens)
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Joined: 5 hours ago
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Topic starter 30/12/2025 7:52 pm  

Good Evening.

Has anyone found the following when using a Daikin 8KW ( or other type of) The power input figure on the MMI varies from the information on the ONECTA App?.

I started a log from the beginning of December 2025 ( the ASHP was installed mid September) and going by the input figure for the 1.12.2025 ( 347 KWH )and the input figure for 30.12.2025 ( 601 KWH )  I got the total usage for that period as 254 KWH .

But the ONECTA App showed 354 I understand that unless I use something like Shelly or home assistant the figures will not be Spot on but this does seem a big difference .

iam going to continue with a log / spread sheet going forward so the New year ( January at least ) may have a better outcome.

regards to all .

and a Happy New Year.

Richard.

 


This topic was modified 2 hours ago by Mars

   
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