No idea, all they said they want to come out for a couple of hours. I have shown them this post about the valve, and the volumiser. And mentioned the heat pump charts still appear to show air in system still.
Did they sort anything out last Monday Justin?
Iām guessing looking at the OEM data they havenāt?
Correct, their view is the 3 way valve is a part that is approved by daikin for the kit and thatās what they fit and if thereās problems daikin do a recall they then fix it. Said thereās no difference between spring loaded and mechanical valves they do same job. So told them to discuss with daikin, you and themselves to get this fixed and right part fitted.
In terms of volumiser the guy said itās within spec the way itās installed and could have done it either way in spec.
They did a air vent which last time fixed the air in tank for short time only for it to return. Donāt look like itās fixed it this time though 
I have asked about the tank told there are no moving parts so this is not a problem just a store for water and coil inside. I have emailed again pointing to relevant parts today.
Octopus wonāt fit ESP32 or Eddi to MyEnergi diagram only as a separated immersion heater I had parts, but told if I or someone else fitted them then I void my warranty.
Stuck between a rock and a hard place, donāt believe I am picking up all the sensors either in home assistant. But thatās another problem.
So waiting on @Octopus to contact @MWPHS and Daikin to go over if these parts can be installed as Mark has suggested above to fix this issue which is still ongoing. Octopus say they fit what Daikin supply. Meanwhile still getting water hammer noises, that donāt happen when Octopus are here. itās not as bad as it was initially and they heard that when they came out but itās still there and charts like this still affecting COP.
They donāt look right, wondering if it is generating heat but itās not recording on the monitor between 9.10 and 9.30 and then there is the part after where heat being generated and no electric usage.
Thatās as far as my knowledge of these things go as a end user, Iām not a engineer but these things donāt look right.
They are correct in the fact they are designed do the same job, but the difference here is the spring return valve seems to be causing a slam shut vibration of the cylinder coil (because of the high flow rate), where an ESBE rotary valve (or even the VC valve) has a different operation which prevents the vibration. When compared like this they are completely different.
Iāve had no contact but I was at an Intergas Heating Open Day today on the grand opening of their new pre-plumb cylinder manufacturing line and LG had placed an order with them with Honeywell mid position valves! Again, another manufacturer who doesnāt seem to know what they are doing. 
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