For a guy interested in this topic, my understanding of heat pumps is pretty basic.
I had to pause and rewind a few times, (I'm old) and make some notes on my diagram,
but things are clearer now. It's a lot easier to look at my system and visualize
the 'flow' of the R410A and know what state it's in, on which side of the Expansion valve etc.
I'm in the middle of testing the repaired outdoor Sanyo unit,
so it's nice to know more about how things actually work,
instead of looking at it as a Black-Box, as is often done in the electronics field.
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