What can be the result of a blocked expansion valve?

The outcome of a blocked expansion valve can lead to inadequate refrigerant flow and poor cooling performance. The expansion valve is a critical component in a refrigeration system that regulates the amount of refrigerant allowed to enter the evaporator. When the expansion valve is blocked, it cannot properly control refrigerant flow, which can lead to a reduced amount of refrigerant reaching the evaporator. This insufficient flow can compromise the system's ability to absorb heat, resulting in diminished cooling efficiency and performance.

Additionally, if airflow is stalled because of a blockage, it can further hinder the heat exchange process, exacerbating cooling issues. The overall effect is a system that struggles to maintain the required temperature, making this option the most accurate reflection of what happens when an expansion valve is blocked.