HVAC - Module 3 Questions and Answers | Latest Version | 2024/2025 | Correct & Verified

HVAC - Module 3 Questions and Answers | Latest Version | 2024/2025 | Correct & Verified What is the purpose of an air filter in a system? To remove dust and debris from the air before it enters the system. Why is regular maintenance important for cooling and heating systems? To ensure efficiency, prevent breakdowns, and extend the system’s life. What can cause a system to stop blowing air? A clogged filter or a malfunctioning blower motor. How do you check if a thermostat is working correctly? Verify the settings and test it by adjusting the temperature to trigger the system. Why does proper airflow matter in any air circulation system? It ensures efficient operation and prevents overheating or freezing of components. 2 What happens if the refrigerant level is too low? The system will not cool properly and may overheat, causing damage. What is the role of a condenser coil? To release heat from the refrigerant to the outside air. Why is it important to clean coils regularly? Dirty coils reduce efficiency and can cause the system to overheat. What should you do if a system is leaking water? Check for a clogged drain line or a malfunctioning condensate pump. Why might a system cycle on and off too frequently? It could be caused by a thermostat issue, dirty filters, or low refrigerant. What could cause warm air to blow instead of cool air? Low refrigerant levels or a malfunctioning compressor. 3 What is the function of a blower motor? To circulate air through the system and into the space. Why is a clogged drain line a concern? It can lead to water leaks and potential damage to surrounding areas. How can you troubleshoot a system that isn’t reaching the set temperature? Check the thermostat, refrigerant levels, and ensure proper airflow. What causes ice to form on components in a cooling system? Low refrigerant or restricted airflow can lead to freezing. Why is it important to replace filters regularly? To maintain proper airflow and improve system efficiency. What should you inspect if the system is making unusual noises? Check for loose components, debris in the fan, or a failing motor. 4 What is the purpose of insulation on ductwork? To prevent energy loss and improve efficiency.