https://learnmetrics.com/best-portable-ac-and-heater-combos/
- Reverse the flow of refrigerant (by switching the position of the expansion valve).
https://learnmetrics.com/best-portable-ac-and-heater-combos/
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真没见过expansion valve can be reversed. 也许it means change the direc
-temptemp-
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06/26/2021 postreply
12:33:31