Air Conditioning Symptoms Checklist

Help our technicians help you.

1. Does A/C system cool OK?

Yes

No

 

2. Does the fan/blower work?

Yes

No

 

At all Speeds

Yes

No

 

3. Is the fan/blower noisy?  

Yes

No

 

4. Do all the dash control work OK?

Yes

No

 

5. Do the vent, heater, and defroster work OK?

Yes

No

6. Is A/C noisy when turned on?

Yes

No

Sometimes

7. Does car stall or idle funny when A/C is on?

Yes

No

8. Does your car overheat?

Yes

No

9. Has the A/C filter/dryer ever been replaced?

Yes

No

10. When was the A/C system serviced last?

Yes

No

11. Does A/C or heater smell?

Yes

No

12. Other problems:________________________________________________________

_________________________________________________________________________

13. Comments: ____________________________________________________________

_________________________________________________________________________

Your Air Conditioning System

Refrigerant: The "working" fluid of the A/C system. The refrigerant transports heat from one part of the system to another. It absorbs heat while turning into gas, gives off heat when becoming a liquid.

 

1. Evaporator: The component where the liquid refrigerant vaporizes, absorbs heat, and travels on to the compressor. The "cold" part.

 

2. Compressor: Pressurizes the refrigerant gas and pumps it to the condenser.

 

3. Condenser: A small radiator that extracts heat from the refrigerant and converts (condenses) it from a gas to a liquid, then transports the liquid, then transports the liquid to the accumulator.

 

4. Accumulator/Receiver: A storage tank and filter for the liquid refrigerant. Excess fluid is stored here and moisture is removed.

 

5. Orifice Tube/Expansion Valve: Regulates the liquid refrigerant going to the evaporator. Here the liquid again changes back into a gas, cools the evaporator fins and gives off cool air that is blown into the car by the fan. The cycle then repeats itself.

 

Compressor Clutch: Engages and disengages the system.

 

Refrigerant Oil: The system lubricant.

 

Discharge: To vent all system refrigerant.

 

Evacuate: To remove all system moisture and refrigerant.

 

Performance Test: A complete test of all operations of the climate control system.

 

Leak Test: A check of all system components and connections for refrigerant leaks.