When a compressor is changed, the four-way valve also must be changed.
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Q6: A common method of starting defrost uses
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Q8: The larger line in an air-to-air split-system
Q9: The coil of the air-to-air heat pump
Q10: The coil of the air-to-air heat pump
Q12: Termination of the defrost cycle by temperature
Q13: It is common for the outdoor unit
Q14: The coil that serves the inside of
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