2.9K views · 52 reactions | When dealing with a pump down circuit you'll find that when the unit is at a stand still, the low pressure switch or LPS is open. I have linked an article on pump down below. https://www.hvacknowitall.com/blogs/blog/186960-rerigerant-pump-down-explained#.YCKqXlNyaDY | HVAC Know It All | Facebook
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2.9K views · 52 reactions | When dealing with a pump down circuit …
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