An overcharged A/C system with a fixed metering device will likely experience?

When an A/C system is overcharged, it means there is an excess amount of refrigerant in the system. In the context of a system with a fixed metering device, this overcharging leads to specific changes in superheat and sub-cooling.

Superheat is the temperature difference between the refrigerant vapor's actual temperature and its saturation temperature at that pressure. In an overcharged system, the excess refrigerant can lead to low superheat because more liquid refrigerant is available than needed for vaporization in the evaporator section. This can cause some of the refrigerant to not fully vaporize before it leaves the evaporator, resulting in a lower superheat reading.

On the other hand, sub-cooling is the process wherein the liquid refrigerant is cooled below its saturation temperature at a given pressure after it exits the condenser. In an overcharged system, there can be a higher amount of liquid refrigerant moving toward the metering device, and if there is an excessive amount of refrigerant in the liquid line, it can lead to higher sub-cooling because the refrigerant remains in a liquid state for a longer period before it is allowed to expand and enter the evaporator.

Thus, in summary, an overcharged A/C system with