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Which outcome occurs when capillary tube that feeds refrigerant evaporator becomes partially blocked in HVAC?

A)Increased dehumidification of supply air
B)Decreased superheat, flooding, and coil freeze
C)Elevated compressor head pressure tripping limit
D)Reduced cooling capacity decreased efficiency

💡 Explanation

When a capillary tube is partially blocked, refrigerant flow limitation leads to a reduced evaporator pressure because insufficient cooling occurs decreased latent heat transfer. Therefore, cooling capacity decreases, rather than increased dehumidification, flooding, or head pressure, all which need other system malfunctions.

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