Daikin 8kw flow T and power are hunting and will not settle down

[dmajwool (David Woolley)]

Hi Mark,

I think there are two behaviours - a macro and a micro - a wow and a flutter - and Matt’s explanation may be more relevant to the macro level. It is the macro level behaviour that I observed in my earlier thread

Daikin 8kW non-constant output

[HP_Hunting_3] My heatpump seems always to have this wave-like varying output and I’m assuming that a continuous, constant output would be preferable and more efficient. Is this behaviour indicating that some setting can be improved, caused by a limitation of my radiator emitters, or is this just typical behaviour for the EDLA08E2V3 ? Many thanks, David.

I think in today’s thread you are observing the micro fluttering level, which is another fingerprint of this heat pump. Here’s my 8kW unit the last 24 hrs showing a few episodes like yours

I haven’t figured out the circumstances that trigger this fluttering behaviour, but I have an Octopus engineer coming next week (to discuss the “Daikin dip”) and I’ll add this fluttering issue to the list of things I’ll ask them about.