@kev-m yes that's the whole house. I do have a little CT clamp meter on the HP, so I can see what its drawing. But its not recorded, I just look in as I walk past and it gives me and idea of what's going on. I know my base load is about 300w, so its easy to work out how much the ASHP is using. Also its own app tells me how much power its using anyway - but its not great with close detail, it only gives an overview (example below)

Today seems basically perfect in terms of heating. It's pretty much been a constant 21° in the house with a heating COP of 4.4. so far we've used 12kw and delivered 53 in heating.

I'll now monitor over the next few days to see how it goes

Got a little warm in the house today - even my wife said so! So it must be true.

I've adjusted the curve to 50@-4 and 25@16 this should be good enough a tweak and that should be that (hopefully). COP seems pretty good today at 3.8 - 14kw used 53kw delivered. Heating water was set at 30° by the weather compensation.

@batalto, your system looks like it’s running very well.

@editor we'll have to see. I am tracking the figures day by day - but its still so mild. I'm all for a mild winter and low power costs, but it gives no idea how well the system is actually performing. Below is the last month, including radiator balances and lots of weather comp changes.

Posted by: @batalto

@editor we'll have to see. I am tracking the figures day by day - but its still so mild. I'm all for a mild winter and low power costs, but it gives no idea how well the system is actually performing. Below is the last month, including radiator balances and lots of weather comp changes.

Hi Batalto,

I would suggest that rather than continuing to keep making adjustments to the weather compensation settings, that you monitor the operation of your system for a while and quantify the indoor temperature variations that may be due to solar gain and other factors.

Reading the manual, I do believe that the Midea controller has a similar function to the 'auto adaptation' used within the Ecodan controller. If your controller is located in a suitable position, and not in the airing cupboard, you could try setting your system to 'Room Temp' control.

@derek-m unfortunately I am not yet using the controller - I am just using a thermostat for the moment. I am thinking of using the controller in the future depending on how I get on

Posted by: @batalto

@derek-m unfortunately I am not yet using the controller - I am just using a thermostat for the moment. I am thinking of using the controller in the future depending on how I get on

Now you have me a little confused. To fully utilise weather compensation your thermostat would have to be set at a value above the desired temperature, so that the weather compensation has full control. If you still have the thermostat switching your ASHP on and off, then your system is not operating in full weather compensation mode.

@derek-m no it's not. It has a weather compensation, but it's only for the flow heating. However the heat is being called from the normal thermostat. So the Midea is altering the flow temperature but not controling when it's being delivered. It's not ideal. However my thermostat is set to 22, so the unit is on all the time and I'm controlling the room temp via weather compensation

Posted by: @batalto

@derek-m no it's not. It has a weather compensation, but it's only for the flow heating. However the heat is being called from the normal thermostat. So the Midea is altering the flow temperature but not controling when it's being delivered. It's not ideal. However my thermo stat is set to 22, so the unit is on all the time and I'm controlling the room temp via weather compensation

Provided that the room temperature remains below 22C, then it would appear that your system is in full weather compensation mode.

Should you decide to use the sensor within the controller, rather than the thermostat, you would need to tell the controller to ignore the thermostat. See section 7.9 ROOM THERMOSTAT menu.

@derek-m we aren't getting to 22. Closest was 21.5 yesterday and the house was feeling hot. Hence why I tweaked it down a little. My Nest is telling me its calling for heat for 23.5hrs a day.

I am considering using the controller - but at this moment I don't see the advantage. I am sure @heacol will come along and tell me it has many advantages I am not yet aware of.

@batalto If you want to control your system by switching it on and off instead of intelligently, that is your choice. You are paying the electricity bill, not me.