AC Components

Tech A says a Evap Core is a heat exchanger. Tech B says a Condenser is a heat exchanger. Who is correct?

• Tech A

• Tech B

• Both A and B

• Neither A nor B

Which refrigerant is a hydrofluoroolefin?

• R1234yf

• R12

• R134a

• Freon

• Ice

If your High side pressure is too high and your Low side pressure is too low.. Its likely that:

• The TXV is stuck open.

• The TXV is stuck in the closed position.

• The compressor is not working.

• A Shrader Valve is leaking.

• You have low refrigerant.

Antifreeze is dripping into the cab on the passenger side. Most likely:

• You have a Evap Core leak

• You have a clogged Evap housing drain

• You have a Heater Core leak

• You have too much refrigerant in the system.

Tech A says the Low side Line coming out of the Condenser is Bigger than the High side line going in. Tech B says both lines on the condenser are High Side. Who is correct?

• Tech A

• Tech B

• Both A and B

• Neither A nor B

Customer States: Bad smell coming from dash vents when the AC is on.

• The evap housing drain is clogged

• The cabin filter needs to be replaced

• Evap Core is dirty

• All of the above

Tech A says: Use high pressure shop air to blow out Cabin filters. Tech B says use low pressure air to blow out cabin filters. Who is correct?

• Tech A

• Tech B

• Both A and B

• Neither A nor B

Is used to boil off water from inside the AC system:

• Air Pressure

• Propane Torch

• Recovery Pump

• Vaccum Pump

• Takis breath

Which of these is not a function of a Trinary Switch

• Low Pressure Protection

• High Pressure Cutoff

• Engine Fan On-Off

• Activates Heater core

Which is the most commonly used Refrigerant?

• R134a

• R1234yf

• Soap

• Freon