Which outcome arises when a heat pump's evaporator coil ices up due to sub-zero temperatures?

💡 Explanation

When the evaporator coil ices up, thermal resistance increases because the ice layer acts as an insulator severely limiting heat transfer between the air and refrigerant. Therefore reduced heat absorption results, rather than increased motor current, superheat, or decreased pressure, which are associated with other cooling system malfunctions.

• Which risk increases when a hydraulic actuator on an aircraft's landing gear experiences erratic supply pressures?
• Which consequence results when the crankshaft in a ship's diesel generator experiences thermal fatigue?
• Which risk increases substantially if a ship's propeller operates extensively in shallow water?
• Which consequence results when improper PLC ladder logic causes a race condition in a robotic arm?
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• Which consequence results when reclosing circuit breakers after a temporary fault on a long transmission line?