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Refrigeration & AC
EPA 608 Certification
Heat Pumps & Ventilation
Knowledge Check
Heat Pumps & Ventilation
Knowledge Check
Knowledge Check
1 / 7
What is the function of a check valve in a heat pump system?
A
It prevents the compressor from running in reverse
B
It regulates the refrigerant charge level automatically
C
It controls the defrost cycle timing
D
It allows flow in one direction and bypasses the metering device in the opposite direction
Check Answer
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