HVAC Troubleshooting Quiz

What does the troubleshooting process consist of?

• Measurement of pressure only

• Measurement of temperature only

• Measurement of superheat, sub-cooling, evaporator split, and condenser split

• Measurement of electrical current only

What are superheat and sub-cooling measurements used for in the troubleshooting process?

• To measure the difference between two pressures

• To measure the difference between two temperatures

• To measure the electrical current

• To measure the speed of the evaporator and condenser fans

According to the diagram, what indicates a low pressure condition in the system?

• High amp draw

• High pressure

• Low amp draw

• Low pressure

What does a high pressure condition in the system indicate according to the diagram?

• Low amp draw

• Sub-cooling

• High amp draw

• Evaporator split

What is one of the measurements determined using troubleshooting charts?

• The pressure of the condenser

• The suction line temperature

• The flow rate of the refrigerant

• The size of the evaporator

What temperature measurement is associated with the evaporator in troubleshooting charts?

• The saturation temperature of the condenser

• The liquid line temperature

• The saturation temperature of the evaporator

• The ambient temperature

Which of the following is NOT a measurement determined by the troubleshooting charts shown?

• The saturation temperature of the condenser

• The liquid line temperature

• The suction line temperature

• The electrical resistance of the suction line

What can be determined using troubleshooting charts?

• The efficiency of the system

• The condition of the sealed system

• The electrical consumption

• The warranty status

Which of the following is NOT mentioned as a component or factor in troubleshooting.

• Superheat

• Sub-cooling

• Evaporator split

• Compressor speed

How can it be determined whether the high side pressure is too high or too low?

• By checking the electrical supply

• By observing the condenser split

• By measuring the temperature of the refrigerant

• By inspecting the compressor