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HVAC
BPI AC & Heat Pump Professional
Refrigerant Charge Verification
Knowledge Check
Refrigerant Charge Verification
Knowledge Check
Knowledge Check
1 / 15
For a TXV-equipped system, what does low subcooling (below 5 F) indicate about refrigerant charge?
A
The system is undercharged - insufficient liquid is stacked in the condenser
B
The system is overcharged with too much refrigerant
C
Low subcooling is normal for high-efficiency systems
D
The TXV is malfunctioning and needs replacement
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