Question 71Refrigeration & AC - QMED

The correct answer is A) refrigerant flooding the condenser. When a refrigeration system is overcharged, it results in an excess amount of refrigerant in the system. This excess refrigerant will flood the condenser, causing a higher than normal head pressure at the compressor discharge. The high head pressure is a direct result of the overcharged condition and the excess refrigerant in the condenser. The other answer choices are incorrect because: B) An incorrectly adjusted high-pressure cutout would not be the cause of the high head pressure, but rather a result of it. C) An overfeeding expansion valve would cause low head pressure, not high head pressure. D) A leaking compressor suction valve would cause low suction pressure, not high head pressure.