Refrigeration & Air Conditioning Mechanic Red Seal · Question
What does a high superheat reading at the evaporator outlet typically indicate in a TXV system?
High superheat means the refrigerant is getting too hot in the evaporator, often due to insufficient refrigerant flow (undercharge) or a restriction causing a p
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Question: What does a high superheat reading at the evaporator outlet typically indicate in a TXV system?
Answer options:
- Overcharged system ✅ Undercharged system or restricted liquid line
- TXV stuck open
- Thermostat calling for heat
Correct answer: Undercharged system or restricted liquid line
Explanation: High superheat means the refrigerant is getting too hot in the evaporator, often due to insufficient refrigerant flow (undercharge) or a restriction causing a pressure drop.
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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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