Refrigeration & Air Conditioning Mechanic Red Seal · Question
What is indicated by a high superheat measurement at the compressor suction line inlet?
High superheat often indicates an undercharge, as less refrigerant is boiling off in the evaporator, leading to more superheat before reaching the compressor.
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Question: What is indicated by a high superheat measurement at the compressor suction line inlet?
Answer options: ✅ Undercharge of refrigerant
- Overcharge of refrigerant
- Flooded evaporator
- Restricted condenser airflow
Correct answer: Undercharge of refrigerant
Explanation: High superheat often indicates an undercharge, as less refrigerant is boiling off in the evaporator, leading to more superheat before reaching the compressor.
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Question explanations
- Which of the following refrigerants is a hydrofluorocarbon (HFC) and has a high ozone depletion potential (ODP
- Which component is responsible for compressing the refrigerant vapour to a high pressure and temperature?
- According to the Canadian Electrical Code (CEC), what is the minimum required working clearance in front of el
- What is the main operating characteristic difference between a fixed orifice (capillary tube) and a Thermostat
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