An overcharge of refrigerant in a system will typically result in what effect?

An overcharge of refrigerant in an air conditioning system typically leads to increased head pressure. This occurs because too much refrigerant in the system means there’s an excess amount entering the condenser coil, which can hinder the proper discharge of refrigerant vapor and ultimately result in higher pressures.

When the head pressure rises, it can affect the system's ability to release heat efficiently, causing the compressor to work harder to move the refrigerant through the system. This not only reduces the overall efficiency of the air conditioning unit but can also lead to potential damage to the compressor if the pressure becomes excessively high.

While other effects like decreased suction pressure might occur depending on the specific circumstances within the system, the most direct and typical result of an overcharge is indeed an increase in head pressure, as the system struggles to accommodate the excess refrigerant. This condition highlights the importance of properly charging the system to maintain optimal performance and prevent damage.