Question 40Refrigeration & AC - 1st Asst/Chief

The correct answer is C) continuous running of the compressor. If a refrigeration system is short on refrigerant, the compressor will not be able to build up enough pressure to cycle off. This will result in the compressor running continuously in an attempt to reach the desired temperature, but without sufficient refrigerant the box temperature will remain elevated. The other options are incorrect because: A) a short-cycling compressor is more indicative of a problem with the water failure switch, not a refrigerant shortage; B) high suction pressure would be the opposite of what you would expect with a refrigerant shortage; and D) high discharge pressure is also not a symptom of a refrigerant shortage.