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← TechnologyWhich outcome occurs when desiccant filter drier saturates in an HVAC refrigerant loop?
A)Compressor motor winding insulation breakdown
B)Capillary tube blockage from ice formation✓
C)Condenser coil pressure relief valve failure
D)Evaporator coil aluminum fin corrosion
💡 Explanation
When a desiccant filter drier saturates, its water absorption ceases, leading to moisture circulating in the refrigerant loop, which undergoes expansion/cooling within the capillary tube, causing ice formation and subsequent blockage. Therefore capillary tube ice blockage results, not motor breakdown, valve failure, or fin corrosion which involve different failure mechanisms.
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