Indoor unit is b25th10 swep (only 10 plates and capacity is 0,44 l (litres) and probably that is the biggest problem. Even when I put water pump to slowest speed (3 speed grunfos pump) it look that water still pass through exchanger to fast.,when i stop pump for 3-4 seconds and turn it on again water is hotter (i can't measure temperature because of short time) and it look like that water need to spend more time in exchanger,because of this I already looking to find some bigger exchanger probably 30 plates.
Also I was thinking about the way to get few more degress on refrigerant side.
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