2. At the same time, clean the condenser fins. Remove the radiator grille and clean it from leaves, insects, etc. on the fins using compressed air or a soft brush. Be careful not to damage the condenser.
3. Use the air conditioner for at least 10 minutes every month, even in cold weather, to keep the seals in good condition.
4. Check the air conditioner pipes, hoses and connections regularly to ensure safe operation.
5. The most common cause of poor cooling is low coolant in the system. If you experience a significant decrease in efficiency when your air conditioner is running, one of the following methods will help you determine if the coolant level is low.
6. Warm up the engine to normal temperature.
7. Move the temperature control knob to the "cold" position and the fan control knob to the "maximum" position. Open the doors (to make sure that the air conditioning system is not turned off and is cooling the interior of the car).
8. When the compressor is on, clicks are heard in the clutch and the center of the clutch rotates, inspect the type of refrigerant. If the coolant is foamed, then its level is low.
9. If the condition of the liquid has not changed, feel the inlet and outlet ports on the compressor. One side should be cold and the other hot. If there is no noticeable difference between the two ports, something is wrong with the compressor or the system. It may be low on refrigerant or something else is wrong.
10. The air conditioning system loses approximately 100 grams of refrigerant per year due to normal leakage, so it is necessary to recharge the system periodically during maintenance. Recharging should be performed by a Nissan dealer or an air conditioning specialist.
Any replacement of system parts must also be performed by a specialist.