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← TechnologyWhich outcome occurs when refrigerant flow is restricted entering HVAC evaporator coils?
A)Compressor overheating lowers system efficiency
B)Evaporator coil surface suffers icing✓
C)Expansion valve undergoes pressure lock
D)Condenser coil experiences vapor flood
💡 Explanation
When refrigerant flow restriction occurs, reduced vaporization rate causes coil temperature to drop below freezing where moisture freezes, forming ice because of reduced heat transfer. Therefore evaporator icing occurs, rather than alternative issues related to other system components under dissimilar conditions.
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