Exam 64: Heating and Air-Conditioning System Diagnosis

The last step in the diagnostic procedure is ________.

(Multiple Choice)

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Question 21

A clogged orifice tube can cause a lack of cooling.

(True/False)

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Question 22

The first step in the diagnostic procedure when attempting to solve an HVAC customer problem is ________.

(Multiple Choice)

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Question 23

Nothing is seen in the sight glass (R-12 system). Technician A says that the system may be completely empty of refrigerant. Technician B says that the system may be completely charged. Which technician is correct?

(Multiple Choice)

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(90)

Question 24

Airflow through a typical HVAC system is being discussed. Technician A says that outside air is always used in all heating and cooling positions. Technician B says that the temperature is controlled by blending airflow through the evaporator and heater core. Which technician is correct?

(Multiple Choice)

4.9/5

(82)

Question 25

Showing 21 - 25 of 25

Exam 64: Heating and Air-Conditioning System Diagnosis

The last step in the diagnostic procedure is ________.

A clogged orifice tube can cause a lack of cooling.

The first step in the diagnostic procedure when attempting to solve an HVAC customer problem is ________.

Nothing is seen in the sight glass (R-12 system). Technician A says that the system may be completely empty of refrigerant. Technician B says that the system may be completely charged. Which technician is correct?

Airflow through a typical HVAC system is being discussed. Technician A says that outside air is always used in all heating and cooling positions. Technician B says that the temperature is controlled by blending airflow through the evaporator and heater core. Which technician is correct?

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