Posted by: @derek-m

Hi @peter 

Try moving the remote controller into your living area and allowing its temperature to stabilise. Kev, could you explain to Peter how to monitor the water flow and return temperatures, and any further useful information.

@derek-m , you might be on to something there.  If the wireless controller is somewhere warm and it's set to less than the temperature of the warm place then it's never going tell the ASHP  to heat.  That might explain the house at 15-17C

@peter, do you have access to Melcloud (Mitsubishi's app)? You need a wireless transmitter attached to ther FTC5 and linked to your Wifi for this.  That gives you access to quite a lot of data including return and flow temps.  

If not and if you want to monitor the return and flow temps you could do what I do and attach cheap aquarium thermometers to the pipes.  You'd have to find the main return and flow pipes in your attic/plant room or whenever they are.  But is the heating actually warming anything up?  Are pipes anywhere getting warm when the heating is on? Your 14kW Ecodan should be making your new build house toasty warm without even trying so something isn't quite right.  At 10C outside it looks like your weather compensation should be high 30s flow; that will feel distinctly warm to the touch.  

Hi @kev-m 

Without me having to go through the manual again, is there a monitoring section within the controller menu, where it is possible to see what the flow and return temperatures are actually reading?

@derek-m 

I never found a way to do this without Melcloud or my thermometers.  If you find one, let me know!

Posted by: @kev-m

@derek-m 

I never found a way to do this without Melcloud or my thermometers.  If you find one, let me know!

Hi Kev,

Try pressing the F1 key, which allegedly provides 'Information'. 🙃  

Wow, this is something I've never seen. Holding down F1 gives this.  The Set Temp. (flow) is what the weather compensation curve says flow temp should be.  If I change the offset, that number changes. (Remember due to my duff sensors the flow temp is under reading by about 5-6C so when weather comp asks for 28C it actually delivers 33-34C, which is what my own thermometer says).

Quite useful.

Posted by: @kev-m

Wow, this is something I've never seen. Holding down F1 gives this.  The Set Temp. (flow) is what the weather compensation curve says flow temp should be.  If I change the offset, that number changes. (Remember due to my duff sensors the flow temp is under reading by about 5-6C so when weather comp asks for 28C it actually delivers 33-34C, which is what my own thermometer says).

Quite useful.

 

  

 

Hi Kev,

If you press F1 more than once, are there any additional screens?

@derek-m 

no, I tried that, pressing holding and the other F butttons but nothing.  

Hi Peter

How are you working out £13 per day?

621kw in Nov at say 21p per unit works out at £4.3 pd plus your water, no way £13 per day

Your usage doesn't seem that high if I am honest, 

@hr_3 Sorry a little bit misleading there.  £13 was total electricity, not just the airsource/hot water.  

It was just what prompted me to decide I needed to figure out the most efficient way of running the air source.  

It's a completely different mindset to a normal heating system, so glad to get feedback on whether my costs are reasonable.  Thanks

Hi @peter 

Did you move the remote controller into your living area? Did you make the suggested changes?

If you do not provide feedback then it limits how much help and advice we can provide, and makes me wonder if I am wasting my time trying to help.

If Peter's house is anything like mine it's all hands to the 'pump' to get Christmas done before returning to the heat pump !

@derek-m Sorry - been busy with family in over Christmas etc

I have moved the remote controller down to the living area and removed the schedules from all the thermostats.  So its now running on AutoAdaptation set to 20 degrees with the controller in the living room.  And its working really well - so thanks!  House is keeping a consistent temperature, heating costs are down.  

So thanks for all your help. 

On the weather compensation curve - I haven't been able to edit it.  There doesn't seem to be an edit button and the manual just suggests contacting the installer.  

I also managed to get Melcloud up and running on wednesday.  so starting to see some data which really helps.

This is my electricity usage record - it was Thursday that i made the changes and removed the remote controller downstairs. So from a electricity usage point of view it seems to be working well.  House has stayed a nice consistent temp as well.