Refrigeration & Air Conditioning Mechanic Red Seal · Question
During the start-up of a newly installed rooftop air conditioning unit, the technician observes that the condenser fan motor is running, but there is no airflow across the condenser coil. What is the most likely cause of this issue?
If the condenser fan motor runs but provides no airflow, it often indicates reversed rotation, especially if the fan blades are turning but pushing air in the w
Start free practice for Refrigeration & Air Conditioning Mechanic Red Seal
500 questions · no signup required · 40 free questions per day
Question: During the start-up of a newly installed rooftop air conditioning unit, the technician observes that the condenser fan motor is running, but there is no airflow across the condenser coil. What is the most likely cause of this issue?
Answer options:
- The compressor is not receiving power.
- The thermostat is set incorrectly for cooling. ✅ The condenser fan motor's rotation is reversed.
- The liquid line service valve is closed.
Correct answer: The condenser fan motor's rotation is reversed.
Explanation: If the condenser fan motor runs but provides no airflow, it often indicates reversed rotation, especially if the fan blades are turning but pushing air in the wrong direction, which can happen with incorrect wiring during installation.
Start free practice for Refrigeration & Air Conditioning Mechanic Red Seal
500 questions · no signup required · 40 free questions per day
More about Refrigeration & Air Conditioning Mechanic Red Seal
Related Questions
- 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
- Which type of electric motor requires a capacitor for starting and running, offering higher efficiency and bet
- When evacuating a refrigeration system, what is the recommended deep vacuum level, typically measured in micro
More for Refrigeration & Air Conditioning Mechanic Red Seal candidates
FAQs
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
Ready to practice?
Free, no signup required. Build a wrong-question list as you go.
Start Free Refrigeration & Air Conditioning Mechanic Red Seal Practice →Related courses
Other Canadian certifications candidates often prepare for alongside this one.