A refrigeration system is equipped with a reciprocating compressor and a water-cooled condensing unit. If the system is overcharged, the resulting high head pressure will be caused by what condition?

Correct Answer: Option A — refrigerant flooding the condenser

An overcharged water-cooled condensing unit traps excess liquid refrigerant within the condenser shell. This flooded condition drastically reduces the effective heat transfer surface area, spiking head pressure and triggering high-pressure cutouts.