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← TechnologyWhich outcome results when cooling load exceeds heat pump's design capacity in sub-zero environment?
A)Auxiliary heat activates lowering efficiency
B)Refrigerant condenses causing compressor failure
C)Evaporator coil freezes blocking airflow✓
D)System pressure increases stressing components
💡 Explanation
When the cooling load significantly exceeds heat pump design, particularly at sub-zero temperatures, the evaporator coil temperature drops dramatically due to excessive heat extraction causing condensation to freeze blocking airflow. C is correct rather than A, B, or D, which require specific control failures or refrigerant mismanagement.
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