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Adding auto-adaption to a Midea heat pump controller

 
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Air Source Heat Pumps (ASHPs)
Last Post by cathodeRay 11 months ago
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cathodeRay
 cathodeRay
(@cathoderay)
Famed Member Moderator
7286 kWhs
Joined: 3 years ago
Posts: 1451
Topic starter 30/10/2023 1:41 pm  

Posted by: @derek-m
↑

I am pleased to see that you are resisting the urge to 'tinker'. I think that you will find it could takes several hours for the IAT to reduce and stabilise.

It's called masterly inactivity...

Posted by: @derek-m
↑

One improvement that you may wish to consider is varying the offset dependent upon the size of the deviation.

Something along the lines of:-

If the deviation is <0.5C, do nothing.

If the deviation is =>0.5C, offset by 1C.

If the deviation is =>1.5C, offset by 2C.

I had had similar thoughts, thinking about recovering from an overnight setback, for example, when the deviation is likely to be greater.

I have just had a peek at the live minute data for the last 12 hours (auto_adapt went live at 0800 this morning) and the LWT and energy in have gone down a bit, whether due to the increased OAT and/or the auto-adaption, and the IAT has dropped by 0.1 degree C... 

image

 

 This is on a par with watching the paint dry. But that's OK for now, I just need to get a feel for what the increments need to be by trial and error.    

Midea 14kW (for now...) ASHP heating both building and DHW


   
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