Which outcome arises when a heat pump's outdoor coil ices over during winter operation?

💡 Explanation

When the outdoor coil of a heat pump ices over, thermal resistance increases because ice insulates the coil and reduces heat transfer from the environment, dropping heating capacity. Therefore reduced heating capacity and efficiency arises, not a longer motor lifespan, increased subcooling, or decreased temperature stratification which require opposite changes to cooling system performance.

• Which consequence results when hot-carrier injection degrades a MOSFET’s threshold voltage?
• Which risk increases when a post-tensioned concrete beam experiences anchor corrosion in a marine environment?
• Which outcome arises when excessive pre-ignition occurs within an internal combustion engine cylinder?
• Which outcome occurs when excessive free play exists between the transmission and landing gear actuator worm in an aircraft's landing gear system?
• Which risk increases when pilot-operated relief valves in a hydraulic system experience significant spool sticking?
• Which outcome occurs following an accumulator failure in a water jet cutter system?