SC Refrigeration Practice Questions - South Carolina Refrigeration Contractor Examination Exam

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A TXV system shows unusually high evaporator superheat, low suction pressure, and a warm suction line. The most likely cause is:

Overcharge or a TXV that is overfeeding Undercharge, a liquid-line restriction, or a TXV that is underfeeding A dirty condenser only, with a correct charge A failed crankcase heater on an idle compressor

Correct Answer:

Undercharge, a liquid-line restriction, or a TXV that is underfeeding

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