Refrigeration & Air Conditioning Mechanic Red Seal · Question
If a technician measures high superheat at the evaporator outlet and low subcooling at the condenser outlet, what is the likely refrigerant charge condition?
Low refrigerant charge results in insufficient liquid in the condenser (low subcooling) and incomplete evaporation in the evaporator (high superheat).
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Question: If a technician measures high superheat at the evaporator outlet and low subcooling at the condenser outlet, what is the likely refrigerant charge condition?
Answer options: ✅ Undercharge
- Overcharge
- Correct charge
- Non-condensable gases present
Correct answer: Undercharge
Explanation: Low refrigerant charge results in insufficient liquid in the condenser (low subcooling) and incomplete evaporation in the evaporator (high superheat).
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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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