ASE Test Prep - A7 Heating and Air
Conditioning - Practice Test #1
Questions and Answers
Both Technicians A and B - Answer Technician A says AC system pressures will vary with
changes in outside temperature. Technician B says vent temperatures will vary depending on
ambient temperature. Who is correct?
A. Technician A only
B. Technician B only
C. Both Technicians A and B
D. Neither Technician A nor B
Both Technicians A and B - Answer A refrigerant identifier is connected to an AC system. The
reading is 1% air and 99% R134A refrigerant. Technician A says the system may have been open
in the past for repairs, due to the small amount of air. Technician B says the system can safely be
recovered into a recovery machine. Who is correct?
A. Technician A only
B. Technician B only
C. Both Technicians A and B
D. Neither Technician A nor B
The system has been completely recovered - Answer Prior to a repair, a technician is
recovering refrigerant from an AC system. Several minutes after recovery has completed, the
low side remains in vacuum. Which of the following could this indicate?
A. The system has been completely recovered
B. There is too much oil in the system
C. There is still some refrigerant left in the system
D. There is excessive moisture in the system
Both Technicians A and B - Answer Technician A says some HVAC actuator motors may
require calibration with a scan tool after replacement. Technician B says some actuators are
automatically calibrated in the self-diagnostic mode. Who is correct?
A. Technician A only
B. Technician B only
C. Both Technicians A and B
D. Neither Technician A nor B
, Technician B only - Answer Technician A says that prior to performing a R134A retrofit, R12
does not need to be recovered from the AC system. Technician B says all components of the AC
system should be checked, and verified fully operational before performing the retrofit. Who is
correct?
A. Technician A only
B. Technician B only
C. Both Technicians A and B
D. Neither Technician A nor B
Remove refrigerant from the system - Answer Which of the following are you MOST likely to
perform during AC refrigerant recovery?
A. Remove most of the oil from the AC system
B. Test refrigerant for contaminants
C. Add refrigerant to the system
D. Remove refrigerant from the system
Both Technicians A and B - Answer An HVAC vent door is being replaced on a late model car.
Technician A says you may need to open up the HVAC duct box in order to perform this repair.
Technician B says the negative battery cable should be removed prior to repair. Who is correct?
A. Technician A only
B. Technician B only
C. Both Technicians A and B
D. Neither Technician A nor B
Both Technicians A and B - Answer Technician A says a scan tool can be used to pull
Automatic Temperature Control DTCs from a vehicle. Technician B says some ATC control heads
will allow you to retrieve DTCs. Who is correct?
A. Technician A only
B. Technician B only
C. Both Technicians A and B
D. Neither Technician A nor B
Technician A only - Answer A vehicle is brought into the shop because the driver's side only
blows cool air, regardless of what the setting is adjusted to. The vehicle has dual zone climate
control. Technician A says the driver's blend door actuator could be faulty. Technician B says the
mode door actuator could be defective. Who is correct?
A. Technician A only
B. Technician B only
Conditioning - Practice Test #1
Questions and Answers
Both Technicians A and B - Answer Technician A says AC system pressures will vary with
changes in outside temperature. Technician B says vent temperatures will vary depending on
ambient temperature. Who is correct?
A. Technician A only
B. Technician B only
C. Both Technicians A and B
D. Neither Technician A nor B
Both Technicians A and B - Answer A refrigerant identifier is connected to an AC system. The
reading is 1% air and 99% R134A refrigerant. Technician A says the system may have been open
in the past for repairs, due to the small amount of air. Technician B says the system can safely be
recovered into a recovery machine. Who is correct?
A. Technician A only
B. Technician B only
C. Both Technicians A and B
D. Neither Technician A nor B
The system has been completely recovered - Answer Prior to a repair, a technician is
recovering refrigerant from an AC system. Several minutes after recovery has completed, the
low side remains in vacuum. Which of the following could this indicate?
A. The system has been completely recovered
B. There is too much oil in the system
C. There is still some refrigerant left in the system
D. There is excessive moisture in the system
Both Technicians A and B - Answer Technician A says some HVAC actuator motors may
require calibration with a scan tool after replacement. Technician B says some actuators are
automatically calibrated in the self-diagnostic mode. Who is correct?
A. Technician A only
B. Technician B only
C. Both Technicians A and B
D. Neither Technician A nor B
, Technician B only - Answer Technician A says that prior to performing a R134A retrofit, R12
does not need to be recovered from the AC system. Technician B says all components of the AC
system should be checked, and verified fully operational before performing the retrofit. Who is
correct?
A. Technician A only
B. Technician B only
C. Both Technicians A and B
D. Neither Technician A nor B
Remove refrigerant from the system - Answer Which of the following are you MOST likely to
perform during AC refrigerant recovery?
A. Remove most of the oil from the AC system
B. Test refrigerant for contaminants
C. Add refrigerant to the system
D. Remove refrigerant from the system
Both Technicians A and B - Answer An HVAC vent door is being replaced on a late model car.
Technician A says you may need to open up the HVAC duct box in order to perform this repair.
Technician B says the negative battery cable should be removed prior to repair. Who is correct?
A. Technician A only
B. Technician B only
C. Both Technicians A and B
D. Neither Technician A nor B
Both Technicians A and B - Answer Technician A says a scan tool can be used to pull
Automatic Temperature Control DTCs from a vehicle. Technician B says some ATC control heads
will allow you to retrieve DTCs. Who is correct?
A. Technician A only
B. Technician B only
C. Both Technicians A and B
D. Neither Technician A nor B
Technician A only - Answer A vehicle is brought into the shop because the driver's side only
blows cool air, regardless of what the setting is adjusted to. The vehicle has dual zone climate
control. Technician A says the driver's blend door actuator could be faulty. Technician B says the
mode door actuator could be defective. Who is correct?
A. Technician A only
B. Technician B only
