How to reduce frequency of defrosts on Daikin Altherma?

[Chris_Hill]

Doing a few more experiments to try and reduce the defrost cycles further ,

when a defrost cycle starts i have automated the LWT to reduce to -3 to reduce the load on the heat pump straight after the defrost cycle

i am not suffering as much as last year so all the above techniques definitely help

i am using other LWT automations to fine tune the weather curve dependant for solar gain and home occupancy so eventually the LWT will come back to where its needed (details below) but will reduce load on the heat pump for long enough to delay the defrost cycle further (i hope )

Beyond Weather compensation ( Daikin )

I spent most of my first year tuning in my weather compensation curve and have got it very close to a perfect curve for my home and setup [image] but i have noticed that there are some events ( weather events like humidity and wind chill and rain ) that can throw the curve out, causing the home to fall in temp or raise in temp. Also the amount of people in the home can effect a perfect flow temp. so i have used this very useful tool from Daikin integration with Home assistant to pull the flo…