ESCO Air Conditioning Practice Exam

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Which of the following is not a symptom of a hermetic system that is low on refrigerant?

Frost on the suction line

Frost on the suction line is not a symptom of a hermetic system that is low on refrigerant. When a system is low on refrigerant, it causes a decrease in the pressure and temperature of the refrigerant within the system. This leads to symptoms such as low suction pressure, high head pressure, and warm air coming from the vents. Frost on the suction line is typically associated with issues like a restricted or partially blocked metering device or a dirty air filter, rather than low refrigerant levels.

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High head pressure

Low suction pressure

Warm air from vents

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