An evaporator coil of a single evaporator, air cooled refrigerator is accumulating excessive frost due to a failure of the defrost mechanism. If the refrigerator features a thermostatically controlled box solenoid and a low pressure cutout controlled compressor, as well as a high pressure cutout, in terms of the compressor, what would be the most likely operating symptom?

Question

Accepted Answer

Option C: short cycle on low pressure cutout. Excessive frost acts as a thermal insulator, preventing heat absorption in the evaporator and starving the compressor of refrigerant vapor. This sudden drop in suction pressure causes the low pressure cutout switch to repeatedly shut down the compressor prematurely.